LINAC2022 - List of Keywords (DTL)

Paper	Title	Other Keywords	Page
MO1PA02	Beam Commissioning of Normal Conducting Part and Status of ESS Project	MMI, linac, rfq, LEBT	18
	R. Miyamoto, C. Amstutz, S. Armanet, R.A. Baron, E.C. Bergman, A.K. Bhattacharyya, B.E. Bolling, W. Borg, S. Calic, M. Carroll, J. Cereijo García, J. Christensson, J.D. Christie, H. Danared, C.S. Derrez, E.M. Donegani, S. Ekström, M. Eriksson, M. Eshraqi, J.F. Esteban Müller, K. Falkland, A. Forsat, S. Gabourin, A. Garcia Sosa, A.A. Gorzawski, V. Grishin, P.O. Gustavsson, S. Haghtalab, V.A. Harahap, H. Hassanzadegan, W. Hees, J.J. Jamróz, A. Jansson, M. Jensen, B. Jones, M. Juni Ferreira, M. Kalafatic, I. Kittelmann, H. Kocevar, S. Kövecses de Carvalho, E. Laface, B. Lagoguez, Y. Levinsen, M. Lindroos, A. Lundmark, M. Mansouri, C. Marrelli, C.A. Martins, J.P.S. Martins, S. Micic, N. Milas, M. Mohammednezhad, R. Montaño, M. Muñoz, G. Mörk, D.J.P. Nicosia, B. Nilsson, D. Noll, A. Nordt, T. Olsson, L. Page, D. Paulic, S. Pavinato, A. Petrushenko, D.C. Plostinar, J. Riegert, A. Rizzo, K.E. Rosengren, K. Rosquist, M. Serluca, T.J. Shea, A. Simelio, S. Slettebak, H. Spoelstra, A.M. Svensson, L. Svensson, R. Tarkeshian, L. Tchelidze, C.A. Thomas, E. Trachanas, K. Vestin, R.H. Zeng, P.L. van Velze, N. Öst ESS, Lund, Sweden C. Baltador, L. Bellan, M. Comunian, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy I. Bustinduy, A. Conde, D. Fernández-Cañoto, N. Garmendia, P.J. González, G. Harper, A. Kaftoosian, J. Martin, I. Mazkiaran, J.L. Muñoz, A.R. Páramo, S. Varnasseri, A.Z. Zugazaga ESS Bilbao, Zamudio, Spain A.C. Chauveau, P. Hamel, O. Piquet CEA-IRFU, Gif-sur-Yvette, France
	The European Spallation Source, currently under construction in Lund Sweden, will be a spallation neutron source driven by a superconducting proton linac with a design power of 5 MW. The linac features a high peak current of 62.5 mA and long pulse length of 2.86 ms with a repetition rate of 14 Hz. The normal conducting part of the linac has been undergoing beam commissioning in multiple steps, and the main focus of the beam commissioning has been on bringing systems into operation, including auxiliary ones. In 2022, beam was transported to the end of the first tank of the five-tank drift tube linac. This paper provides a summary of the beam commissioning activities at ESS and the current status of the linac.

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	Slides MO1PA02 [18.907 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MO1PA02
About •	Received ※ 20 August 2022 — Revised ※ 27 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 21 September 2022
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MOPOPA17	RF Commissioning of the First-of-Series Cavity Section of the Alvarez 2.0 at GSI	cavity, operation, vacuum, coupling	106
	M. Heilmann, L. Groening, C. Herr, M. Hoerr, S. Mickat, B. Schlitt, G. Schreiber GSI, Darmstadt, Germany
	The existing post-stripper DTL of the GSI UNILAC will be replaced with the new Alvarez 2.0 DTL to serve as the injector chain for the Facility of Antiproton and Ion Research (FAIR). The 10⁸.4 MHz Alvarez 2.0 DTL with a total length of 55 meters has an input energy of 1.36 MeV/u and the output energy is 11.32 MeV/u. The presented First-of-Series (FoS) cavity section with 11 drift tubes and a total length of 1.9 m is the first part of the first cavity of the Alvarez 2.0 DTL. After copper plating and assembly of the cavity the RF-conditioning started in July 2021. These proceeding gives an overview on the results of the successfully RF-conditioning to reach the necessary gap voltage for uranium operation including a comfortable safety margin.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOPA17
About •	Received ※ 24 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 01 September 2022
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MOPOGE03	Design of a Linear Accelerator for Isotope Production	linac, rfq, ECR, target	142
	A. Pisent, C. Baltador, L. Bellan, M. Comunian, J. Esposito, L. Ferrari, A. Galatà, F. Grespan INFN/LNL, Legnaro (PD), Italy L. Celona INFN/LNS, Catania, Italy P. Mereu INFN-Torino, Torino, Italy
	The recent accelerator developments allow the design of very efficient linear accelerators for various applications. The possible use of concepts, components and developments well established or recently achieved in larger projects will be illustrated, with some examples related to isotope production for medical applications.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE03
About •	Received ※ 14 August 2022 — Revised ※ 16 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 05 September 2022
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MOPOGE04	Cell Geometry Optimization for Dipole Kick Correction in a High-Frequency IH Structure	dipole, cavity, linac, impedance	146
	R. López López, P. Calvo, D. Gavela, J. Giner Navarro, G. Moreno, C. Oliver, J.M. Pérez Morales CIEMAT, Madrid, Spain M.C. Battaglia, J.M. Carmona AVS, Elgoibar, Spain A.M. Lombardi CERN, Meyrin, Switzerland
	Funding: CIEMAT Given the asymmetry in the stem configuration of an IH-DTL structure, an electric dipole component is always present between drift tubes, and it is especially significant for reduced dimensions in high-frequency regimes. Here we study the effect of different modifications of the drift tubes geometry of a 750 MHz IH-DTL to eliminate the impact of the dipole component in the transverse beam dynamics. Tracking simulations through a single cell are also performed to assess the outcomes in particle’s trajectory offset and angle.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE04
About •	Received ※ 24 August 2022 — Revised ※ 27 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 04 September 2022
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MOPOGE13	Acceleration Efficiency of TE-Mode Structures for Proton Linacs	cavity, proton, simulation, impedance	177
	J. Tamura, Y. Kondo, T. Morishita JAEA/J-PARC, Tokai-mura, Japan F. Naito, M. Otani KEK, Tokai, Ibaraki, Japan
	Various types of cavity structures are typically used in hadron linacs, depending on the energy range of the beam particle. This is especially the case in a normal-conducting linac, because the cavity’s acceleration efficiency varies with the velocity of the synchronous particle. For low-energy proton acceleration, while Alvarez drift-tube linacs (DTLs) are the most prevalent, TE-mode accelerating structures, which could also be called H-mode structures, are also widely used immediately after an initial radiofrequency quadrupole linac (RFQ). At present, the representative structures of TE modes are interdigital H-mode (IH) DTL and crossbar H-mode (CH) DTL, which are based on the TE11-mode pillbox cavity and TE21-mode pillbox cavity, respectively. In this presentation, acceleration efficiency of TE-mode structures including higher-order TE-modes such as TE31 and TE41 was comparatively reviewed with Alvarez DTL. This study shows that IH-DTL and CH-DTL have a larger shunt impedance than Alvarez DTL for proton acceleration below 10 MeV, and furthermore for the TEm1-mode structures, the rotational symmetry of the electric field improves with increasing angular index m.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE13
About •	Received ※ 30 August 2022 — Revised ※ 06 September 2022 — Accepted ※ 14 September 2022 — Issue date ※ 26 September 2022
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MOPOGE18	Design of IH-DTL to Accelerate Intense Lithium-Ion Beam for Compact Neutron Source	neutron, linac, rfq, ion-source	194
	S. Ikeda, T. Kanesue, M. Okamura BNL, Upton, New York, USA
	We are studying feasibility of a compact neutron source with a lithium-ion beam driver. The neutron source com-prises a laser ion source, an RFQ linac, and an IH-DTL. Recently, we demonstrated 35-mA 7Li³⁺ ion beam acceler-ation by an RFQ linac with a laser ion source. Based on the result, we performed beam dynamic design of an IH-DTL to accelerate the lithium-ion beam to the energy required for the neutron production, 14 MeV. To obtain a realistic field distribution, we made a rough model of the IH-DTL cavity with Microwave studio. It was confirmed with GPT 3D beam simulation that 1.7-m and 200-kW IH-DTL with two triplets can accelerate 30-mA 7Li³⁺ beam.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE18
About •	Received ※ 02 September 2022 — Revised ※ 05 September 2022 — Accepted ※ 09 September 2022 — Issue date ※ 13 October 2022
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MOPORI02	Implementation of an Advanced MicroTCA.4-based Digitizer for Monitoring Comb-Like Beam at the J-PARC Linac	linac, monitoring, operation, MEBT	219
	E. Cicek, K. Futatsukawa, T. Miyao, S. Mizobata KEK, Ibaraki, Japan N. Hayashi, A. Miura, K. Moriya JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	The Japan Proton Accelerator Research Complex (J-PARC) linac beam pulse, generated by a beam chopper system placed at the MEBT, comprises a series of intermediate pulses with a comb-like structure synchronized with the radio-frequency of the rapid cycling synchrotron (RCS). The sequentially measuring and monitoring the comb-like beam pulse ensures the beam stability with less beam loss at the current operation and higher beam intensity scenarios at the J-PARC. However, signal processing as a function of the pulse structure is challenging using a general-purpose digitizer, and monitoring the entire macro pulse during the beam operation is unavailable. To this end, an advanced beam monitor digitizer complying with the MicroTCA.4 (MicroTelecommunications Computing Architecture.4) standard, including digital signal processing functions, has been developed. This paper reports the implementation, performance evaluation, and the first results of this unique beam monitor digitizer.
	Poster MOPORI02 [7.902 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI02
About •	Received ※ 13 August 2022 — Accepted ※ 22 August 2022 — Issue date ※ 01 September 2022
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MOPORI22	High-Power Test of an APF IH-DTL Prototype for the Muon Linac	cavity, linac, experiment, simulation	275
	Y. Nakazawa, H. Iinuma Ibaraki University, Ibaraki, Japan E. Cicek, H. Ego, K. Futatsukawa, N. Kawamura, T. Mibe, S. Mizobata, N. Saito, M. Yoshida KEK, Ibaraki, Japan N. Hayashizaki Research Laboratory for Nuclear Research, Tokyo Institute of Technology, Tokyo, Japan Y. Iwata NIRS, Chiba-shi, Japan R. Kitamura, Y. Kondo, T. Morishita JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan M. Otani J-PARC, KEK & JAEA, Ibaraki-ken, Japan Y. Sue, K. Sumi, M. Yotsuzuka Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan Y. Takeuchi Kyushu University, Fukuoka, Japan T. Yamazaki KEK, Tokai Branch, Tokai, Naka, Ibaraki, Japan H.Y. Yasuda University of Tokyo, Tokyo, Japan
	A muon linac is under development for a new muon g-2/EDM experiment at J-PARC. The muons are cooled to about room temperature and then re-accelerated to 212 MeV by four linear accelerators to produce a low-emittance muon beam. In the low-beta section, a short-range acceleration cavity with high efficiency needs to be developed to suppress the decay of muons. We propose a 324 MHz inter-digital H-mode drift-tube linac (IH-DTL) with high acceleration efficiency. The cavity can be downsized by introducing the alternating phase focusing (APF) method that provides transverse focusing only with an E-field. We have developed a prototype cavity that accelerates muons up to 1.3 MeV to demonstrate the principle. In this paper, the result of the high power test of the APF IH-DTL prototype is reported.
	Poster MOPORI22 [10.978 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI22
About •	Received ※ 13 August 2022 — Revised ※ 16 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 01 September 2022
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MOPORI26	Limits on Standing Wave Cavity Performance Due to Thermal Effects	cavity, simulation, linac, proton	287
	S.J. Smith, G. Burt Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
	After an RF cavity has been designed, a thermal analysis is typically performed to assess the effects of RF heating on the operating frequency and field flatness. A multi-physics approach (coupled electromagnetic, thermal, and mechanical) is normally employed, sometimes combined with computational fluid dynamics (CFD) simulations to incorporate flowing water, which is used for cooling in normal conducting structures. Performing a CFD analysis can add significant time to the design process because of the long and complex simulations and instead, approximations of the heat transfer coefficients and inlet/outlet water temperature rises are made and used directly in the multi-physics analysis. In this work, we first explore the limits of these approximations, identifying when they apply and how accurate they are. We then investigate different pipe geometries and water flow rates to find the thermal limits from RF heating on cavity performance.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI26
About •	Received ※ 17 August 2022 — Revised ※ 20 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 15 September 2022
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TUPOJO04	R&D for the Realization of a Very High Frequency Crossbar H-Mode Drift Tube Linac	cavity, linac, vacuum, coupling	341
	M. Heilmann, C. Zhang GSI, Darmstadt, Germany H. Podlech IAP, Frankfurt am Main, Germany
	A 704.4 MHz Crossbar H-mode (CH) drift tube linac has been proposed for performing a radio frequency jump at ß = 0.2. Up to now, the highest frequency of the constructed CH cavities is 360 MHz. Simulations have shown that the operation frequency for an H210-mode cavity can be up to ~800 MHz. At 704.4 MHz, the cavity dimensions become small, which bring challenges for many practical problems e.g. construction, vacuum pumping and RF coupling. This paper presents the performed R&D studies for the realization of such a very high frequency cavity.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO04
About •	Received ※ 14 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 31 August 2022
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TUPOJO09	High Power RF Conditioning of the ESS DTL1	cavity, vacuum, controls, operation	356
	F. Grespan, C. Baltador, L. Bellan, D. Bortolato, M. Comunian, E. Fagotti, M.G. Giacchini, M. Montis, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy F. Grespan, B. Jones, L. Page, A.G. Sosa, E. Trachanas, R. Zeng ESS, Lund, Sweden D.J.P. Nicosia CERN, Meyrin, Switzerland
	The first tank of Drift Tube Linac (DTL) for the European Spallation Source ERIC (ESS), delivered by INFN, has been installed in the ESS tunnel in Summer 2021. The DTL-1 is designed to accelerate a 62.5 mA proton beam from 3.62 MeV up to 21 MeV. It consists of 61 accelerating gaps, alternate with 60 drift tubes equipped with Permanent Magnet Quadrupole (PMQ) in a FODO lattice. The remaining drift tubes are equipped with dipole correctors (steerers), beam position monitors (BPMs) or empty. The total length of the cavity is 7.6 m and it is stabilized by post couplers. Two waveguide couplers feed the DTL with the 2.2 MW of RF power required for beam operation, equally divided by RF power losses and beam power. This paper first presents the main systems required for the DTL conditioning. Then it summarizes the main steps and results of this high power RF conditioning done at ESS to prepare the DTL for the consequent beam commissioning.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO09
About •	Received ※ 15 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 15 September 2022
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TUPOJO10	Hardware Commissioning With Beam at the European Spallation Source: Ion Source to DTL1	MMI, ion-source, linac, rfq	360
	B. Jones, R.A. Baron, C.S. Derrez, F. Grespan, V. Grishin, Y. Levinsen, N. Milas, R. Miyamoto, D.J.P. Nicosia, D. Noll, D.C. Plostinar, A.G. Sosa, E. Trachanas, R. Zeng ESS, Lund, Sweden C. Baltador, L. Bellan, M. Comunian, F. Grespan, A. Palmieri INFN/LNL, Legnaro (PD), Italy I. Bustinduy, N. Garmendia ESS Bilbao, Zamudio, Spain L. Neri INFN/LNS, Catania, Italy
	The European Spallation Source (ESS) aims to build and commission a 2 MW proton linac ready for neutron production in 2025. The normal conducting section of the ESS linac is designed to accelerate a 62.5 mA proton beam to 90 MeV at 14 Hz. The section consists of a microwave ion source, Radio Frequency Quadrupole (RFQ) and 5-tank Drift Tube Linac (DTL). All sections are provided to ESS by in-kind partners across Europe. This paper reports the recent progress on the assembly, installation, testing and commissioning of the ESS normal conducting linac.
	Slides TUPOJO10 [2.397 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO10
About •	Received ※ 12 August 2022 — Revised ※ 15 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 03 September 2022
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TUPOGE19	Status of the New Intense Heavy Ion DTL Project Alvarez 2.0 at GSI	cavity, quadrupole, focusing, operation	537
	L. Groening, T. Dettinger, X. Du, M. Heilmann, M. Kaiser, E. Merz, S. Mickat, A. Rubin, C. Xiao GSI, Darmstadt, Germany
	The Alvarez-type post-stripper DTL at GSI accelerates intense ion beams with A/q <= 8.5 from 1.4 to 11.4 MeV/u. After more than 45 years of operation it suffers from aging and its design does not meet the requirements of the upcoming FAIR project. The design of a new 10⁸ MHz Alvarez-type DTL has been completed and series components for the 55 m long DTL are under production. In preparation, a first cavity section as First of Series has been operated at nominal RF-parameters. Additionally, a prototype drift tube with internal pulsed quadrupole has been built and operated at nominal parameters successfully. High quality of copper-plating of large components and add-on parts has been achieved within the ambitious specifications. This contribution summarizes the current project status of Alvarez 2.0 at GSI and sketches the future path to completion.
	Slides TUPOGE19 [1.197 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE19
About •	Received ※ 18 August 2022 — Revised ※ 30 August 2022 — Accepted ※ 08 September 2022 — Issue date ※ 15 September 2022
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TUPORI27	Preliminary Study on the Implementation of the Orbit Correction to the 100 Mev Proton Linac at KOMAC	linac, simulation, proton, GUI	613
	S. Lee, J.J. Dang, D.-H. Kim, H.S. Kim, H.-J. Kwon, S.P. Yun KOMAC, KAERI, Gyeongju, Republic of Korea
	Funding: This work has been supported through KOMAC operation fund of KAERI by the Korean government (MIST) At Korea Multipurpose Accelerator Complex (KOMAC), we have been operating a 100 MeV linac consisting of 11 DTLs with several beam position monitors (BPMs) and steering magnets installed for the orbit correction of the proton beam. The orbit correction can be performed through the response matrix between the position measurements from the BPMs and the field strength of the steering magnets. In this work, we will show the calculated response matrix from the simulation results, and describe the detailed plans for the implementation of the orbit correction in the real linac system at KOMAC.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPORI27
About •	Received ※ 20 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 05 September 2022 — Issue date ※ 15 September 2022
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WE1AA05	The Muon Linac Project at J-PARC	linac, rfq, acceleration, experiment	636
	Y. Kondo, Y. Fuwa, R. Kitamura, K. Moriya, T. Takayanagi JAEA/J-PARC, Tokai-mura, Japan S. Bae, H. Choi, S. Choi, B. Kim, H.S. Ko SNU, Seoul, Republic of Korea E. Cicek, H. Ego, Y. Fukao, K. Futatsukawa, N. Kawamura, T. Mibe, Y. Miyake, S. Mizobata, M. Otani, N. Saito, K. Shimomura, T. Yamazaki, M. Yoshida KEK, Ibaraki, Japan K. Hasegawa QST Rokkasho, Aomori, Japan N. Hayashizaki Research Laboratory for Nuclear Research, Tokyo Institute of Technology, Tokyo, Japan T. Iijima, Y. Sue, K. Sumi Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan H. Iinuma, Y. Nakazawa Ibaraki University, Ibaraki, Japan K. Inami, K. Suzuki, M. Yotsuzuka Nagoya University, Nagoya, Japan K. Ishida RIKEN Nishina Center, Wako, Japan Y. Iwashita Kyoto ICR, Uji, Kyoto, Japan T. Morishita JAEA/LINAC, Ibaraki-ken, Japan G.P. Razuvaev Budker INP & NSU, Novosibirsk, Russia Y. Takeuchi, J. Tojo Kyushu University, Fukuoka, Japan E. Won Korea University, Seoul, Republic of Korea H.Y. Yasuda University of Tokyo, Tokyo, Japan
	The muon linac project for the precise measurement of the muon anomalous magnetic and electric dipole moments, which is currently one of the hottest issues of the elementary particle physics, is in progress at J-PARC. The muons from the J-PARC muon facility are once cooled to room temperature, then accelerated up to 212 MeV with a normalized emittance of 1.5 pi mm mrad and a momentum spread of 0.1%. Four types of accelerating structures are adopted to obtain the efficient acceleration with a wide beta range from 0.01 to 0.94. The project is moving into the construction phase. They already demonstrated the re-acceleration scheme of the decelerated muons using a 324-MHz RFQ in 2017. The high-power test of the 324-MHz Interdigital H-mode (IH) DTL using a prototype cavity will be performed in 2021. The fabrication of the first module of 14 modules of the 1296-MHz Disk and Washer (DAW) CCL will be done to confirm the production process. Moreover, the final design of the travelling wave accelerating structure for the high beta region is also proceeding. In this presentation, the recent progress toward the realization of the world first muon linac will be presented.

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	Slides WE1AA05 [3.764 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-WE1AA05
About •	Received ※ 14 August 2022 — Revised ※ 21 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 16 September 2022
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FR1AA05	Design Considerations for a Proton Linac for a Compact Accelerator Based Neutron Source	MEBT, emittance, neutron, rfq	878
	M. Abbaslou UVIC, Victoria, Canada A. Gottberg, O.K. Kester, R.E. Laxdal, M. Marchetto TRIUMF, Vancouver, Canada D.D. Maharaj, D. Marquardt University of Windsor, Windsor, Ontario, Canada S. Tabbassum Purdue University, West Lafayette, Indiana, USA
	New neutron sources are needed both for Canada and internationally as access to reactor based neutrons shrinks. Compact Accelerator-based Neutron Sources (CANS) offer the possibility of an intense source of pulsed neutrons with a capital cost significantly lower than spallation sources. In an effort to close the neutron gap in Canada a prototype, Canadian compact accelerator-based neutron source (PC-CANS) is proposed for installation at the University of Windsor. The PC-CANS is envisaged to serve two neutron science instruments, a boron neutron capture therapy (BNCT) station and a beamline for fluorine-18 radioisotope production for positron emission tomography (PET). To serve these diverse applications of neutron beams, a linear accelerator solution is selected, that will provide 10 MeV protons with a peak current of 10 mA within a 5% duty cycle. The accelerator is based on an RFQ and DTL with a post-DTL pulsed kicker system to simultaneously deliver macro-pulses to each end-station. Several choices of Linac technology are being considered and a comparison of the choices will be presented.

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	Slides FR1AA05 [1.945 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-FR1AA05
About •	Received ※ 27 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 03 September 2022
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Paper

Title

Other Keywords

Page

MO1PA02

Beam Commissioning of Normal Conducting Part and Status of ESS Project

MMI, linac, rfq, LEBT

18

R. Miyamoto, C. Amstutz, S. Armanet, R.A. Baron, E.C. Bergman, A.K. Bhattacharyya, B.E. Bolling, W. Borg, S. Calic, M. Carroll, J. Cereijo García, J. Christensson, J.D. Christie, H. Danared, C.S. Derrez, E.M. Donegani, S. Ekström, M. Eriksson, M. Eshraqi, J.F. Esteban Müller, K. Falkland, A. Forsat, S. Gabourin, A. Garcia Sosa, A.A. Gorzawski, V. Grishin, P.O. Gustavsson, S. Haghtalab, V.A. Harahap, H. Hassanzadegan, W. Hees, J.J. Jamróz, A. Jansson, M. Jensen, B. Jones, M. Juni Ferreira, M. Kalafatic, I. Kittelmann, H. Kocevar, S. Kövecses de Carvalho, E. Laface, B. Lagoguez, Y. Levinsen, M. Lindroos, A. Lundmark, M. Mansouri, C. Marrelli, C.A. Martins, J.P.S. Martins, S. Micic, N. Milas, M. Mohammednezhad, R. Montaño, M. Muñoz, G. Mörk, D.J.P. Nicosia, B. Nilsson, D. Noll, A. Nordt, T. Olsson, L. Page, D. Paulic, S. Pavinato, A. Petrushenko, D.C. Plostinar, J. Riegert, A. Rizzo, K.E. Rosengren, K. Rosquist, M. Serluca, T.J. Shea, A. Simelio, S. Slettebak, H. Spoelstra, A.M. Svensson, L. Svensson, R. Tarkeshian, L. Tchelidze, C.A. Thomas, E. Trachanas, K. Vestin, R.H. Zeng, P.L. van Velze, N. Öst
ESS, Lund, Sweden
C. Baltador, L. Bellan, M. Comunian, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy
I. Bustinduy, A. Conde, D. Fernández-Cañoto, N. Garmendia, P.J. González, G. Harper, A. Kaftoosian, J. Martin, I. Mazkiaran, J.L. Muñoz, A.R. Páramo, S. Varnasseri, A.Z. Zugazaga
ESS Bilbao, Zamudio, Spain
A.C. Chauveau, P. Hamel, O. Piquet
CEA-IRFU, Gif-sur-Yvette, France

The European Spallation Source, currently under construction in Lund Sweden, will be a spallation neutron source driven by a superconducting proton linac with a design power of 5 MW. The linac features a high peak current of 62.5 mA and long pulse length of 2.86 ms with a repetition rate of 14 Hz. The normal conducting part of the linac has been undergoing beam commissioning in multiple steps, and the main focus of the beam commissioning has been on bringing systems into operation, including auxiliary ones. In 2022, beam was transported to the end of the first tank of the five-tank drift tube linac. This paper provides a summary of the beam commissioning activities at ESS and the current status of the linac.

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Slides MO1PA02 [18.907 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MO1PA02

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Received ※ 20 August 2022 — Revised ※ 27 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 21 September 2022

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MOPOPA17

RF Commissioning of the First-of-Series Cavity Section of the Alvarez 2.0 at GSI

cavity, operation, vacuum, coupling

106

M. Heilmann, L. Groening, C. Herr, M. Hoerr, S. Mickat, B. Schlitt, G. Schreiber
GSI, Darmstadt, Germany

The existing post-stripper DTL of the GSI UNILAC will be replaced with the new Alvarez 2.0 DTL to serve as the injector chain for the Facility of Antiproton and Ion Research (FAIR). The 10⁸.4 MHz Alvarez 2.0 DTL with a total length of 55 meters has an input energy of 1.36 MeV/u and the output energy is 11.32 MeV/u. The presented First-of-Series (FoS) cavity section with 11 drift tubes and a total length of 1.9 m is the first part of the first cavity of the Alvarez 2.0 DTL. After copper plating and assembly of the cavity the RF-conditioning started in July 2021. These proceeding gives an overview on the results of the successfully RF-conditioning to reach the necessary gap voltage for uranium operation including a comfortable safety margin.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOPA17

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Received ※ 24 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 01 September 2022

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MOPOGE03

Design of a Linear Accelerator for Isotope Production

linac, rfq, ECR, target

142

A. Pisent, C. Baltador, L. Bellan, M. Comunian, J. Esposito, L. Ferrari, A. Galatà, F. Grespan
INFN/LNL, Legnaro (PD), Italy
L. Celona
INFN/LNS, Catania, Italy
P. Mereu
INFN-Torino, Torino, Italy

The recent accelerator developments allow the design of very efficient linear accelerators for various applications. The possible use of concepts, components and developments well established or recently achieved in larger projects will be illustrated, with some examples related to isotope production for medical applications.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE03

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Received ※ 14 August 2022 — Revised ※ 16 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 05 September 2022

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MOPOGE04

Cell Geometry Optimization for Dipole Kick Correction in a High-Frequency IH Structure

dipole, cavity, linac, impedance

146

R. López López, P. Calvo, D. Gavela, J. Giner Navarro, G. Moreno, C. Oliver, J.M. Pérez Morales
CIEMAT, Madrid, Spain
M.C. Battaglia, J.M. Carmona
AVS, Elgoibar, Spain
A.M. Lombardi
CERN, Meyrin, Switzerland

Funding: CIEMAT
Given the asymmetry in the stem configuration of an IH-DTL structure, an electric dipole component is always present between drift tubes, and it is especially significant for reduced dimensions in high-frequency regimes. Here we study the effect of different modifications of the drift tubes geometry of a 750 MHz IH-DTL to eliminate the impact of the dipole component in the transverse beam dynamics. Tracking simulations through a single cell are also performed to assess the outcomes in particle’s trajectory offset and angle.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE04

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Received ※ 24 August 2022 — Revised ※ 27 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 04 September 2022

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MOPOGE13

Acceleration Efficiency of TE-Mode Structures for Proton Linacs

cavity, proton, simulation, impedance

177

J. Tamura, Y. Kondo, T. Morishita
JAEA/J-PARC, Tokai-mura, Japan
F. Naito, M. Otani
KEK, Tokai, Ibaraki, Japan

Various types of cavity structures are typically used in hadron linacs, depending on the energy range of the beam particle. This is especially the case in a normal-conducting linac, because the cavity’s acceleration efficiency varies with the velocity of the synchronous particle. For low-energy proton acceleration, while Alvarez drift-tube linacs (DTLs) are the most prevalent, TE-mode accelerating structures, which could also be called H-mode structures, are also widely used immediately after an initial radiofrequency quadrupole linac (RFQ). At present, the representative structures of TE modes are interdigital H-mode (IH) DTL and crossbar H-mode (CH) DTL, which are based on the TE11-mode pillbox cavity and TE21-mode pillbox cavity, respectively. In this presentation, acceleration efficiency of TE-mode structures including higher-order TE-modes such as TE31 and TE41 was comparatively reviewed with Alvarez DTL. This study shows that IH-DTL and CH-DTL have a larger shunt impedance than Alvarez DTL for proton acceleration below 10 MeV, and furthermore for the TEm1-mode structures, the rotational symmetry of the electric field improves with increasing angular index m.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE13

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Received ※ 30 August 2022 — Revised ※ 06 September 2022 — Accepted ※ 14 September 2022 — Issue date ※ 26 September 2022

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MOPOGE18

Design of IH-DTL to Accelerate Intense Lithium-Ion Beam for Compact Neutron Source

neutron, linac, rfq, ion-source

194

S. Ikeda, T. Kanesue, M. Okamura
BNL, Upton, New York, USA

We are studying feasibility of a compact neutron source with a lithium-ion beam driver. The neutron source com-prises a laser ion source, an RFQ linac, and an IH-DTL. Recently, we demonstrated 35-mA 7Li³⁺ ion beam acceler-ation by an RFQ linac with a laser ion source. Based on the result, we performed beam dynamic design of an IH-DTL to accelerate the lithium-ion beam to the energy required for the neutron production, 14 MeV. To obtain a realistic field distribution, we made a rough model of the IH-DTL cavity with Microwave studio. It was confirmed with GPT 3D beam simulation that 1.7-m and 200-kW IH-DTL with two triplets can accelerate 30-mA 7Li³⁺ beam.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE18

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Received ※ 02 September 2022 — Revised ※ 05 September 2022 — Accepted ※ 09 September 2022 — Issue date ※ 13 October 2022

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MOPORI02

Implementation of an Advanced MicroTCA.4-based Digitizer for Monitoring Comb-Like Beam at the J-PARC Linac

linac, monitoring, operation, MEBT

219

E. Cicek, K. Futatsukawa, T. Miyao, S. Mizobata
KEK, Ibaraki, Japan
N. Hayashi, A. Miura, K. Moriya
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

The Japan Proton Accelerator Research Complex (J-PARC) linac beam pulse, generated by a beam chopper system placed at the MEBT, comprises a series of intermediate pulses with a comb-like structure synchronized with the radio-frequency of the rapid cycling synchrotron (RCS). The sequentially measuring and monitoring the comb-like beam pulse ensures the beam stability with less beam loss at the current operation and higher beam intensity scenarios at the J-PARC. However, signal processing as a function of the pulse structure is challenging using a general-purpose digitizer, and monitoring the entire macro pulse during the beam operation is unavailable. To this end, an advanced beam monitor digitizer complying with the MicroTCA.4 (MicroTelecommunications Computing Architecture.4) standard, including digital signal processing functions, has been developed. This paper reports the implementation, performance evaluation, and the first results of this unique beam monitor digitizer.

Poster MOPORI02 [7.902 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI02

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Received ※ 13 August 2022 — Accepted ※ 22 August 2022 — Issue date ※ 01 September 2022

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MOPORI22

High-Power Test of an APF IH-DTL Prototype for the Muon Linac

cavity, linac, experiment, simulation

275

Y. Nakazawa, H. Iinuma
Ibaraki University, Ibaraki, Japan
E. Cicek, H. Ego, K. Futatsukawa, N. Kawamura, T. Mibe, S. Mizobata, N. Saito, M. Yoshida
KEK, Ibaraki, Japan
N. Hayashizaki
Research Laboratory for Nuclear Research, Tokyo Institute of Technology, Tokyo, Japan
Y. Iwata
NIRS, Chiba-shi, Japan
R. Kitamura, Y. Kondo, T. Morishita
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
M. Otani
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
Y. Sue, K. Sumi, M. Yotsuzuka
Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan
Y. Takeuchi
Kyushu University, Fukuoka, Japan
T. Yamazaki
KEK, Tokai Branch, Tokai, Naka, Ibaraki, Japan
H.Y. Yasuda
University of Tokyo, Tokyo, Japan

A muon linac is under development for a new muon g-2/EDM experiment at J-PARC. The muons are cooled to about room temperature and then re-accelerated to 212 MeV by four linear accelerators to produce a low-emittance muon beam. In the low-beta section, a short-range acceleration cavity with high efficiency needs to be developed to suppress the decay of muons. We propose a 324 MHz inter-digital H-mode drift-tube linac (IH-DTL) with high acceleration efficiency. The cavity can be downsized by introducing the alternating phase focusing (APF) method that provides transverse focusing only with an E-field. We have developed a prototype cavity that accelerates muons up to 1.3 MeV to demonstrate the principle. In this paper, the result of the high power test of the APF IH-DTL prototype is reported.

Poster MOPORI22 [10.978 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI22

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Received ※ 13 August 2022 — Revised ※ 16 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 01 September 2022

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MOPORI26

Limits on Standing Wave Cavity Performance Due to Thermal Effects

cavity, simulation, linac, proton

287

S.J. Smith, G. Burt
Cockcroft Institute, Lancaster University, Lancaster, United Kingdom

After an RF cavity has been designed, a thermal analysis is typically performed to assess the effects of RF heating on the operating frequency and field flatness. A multi-physics approach (coupled electromagnetic, thermal, and mechanical) is normally employed, sometimes combined with computational fluid dynamics (CFD) simulations to incorporate flowing water, which is used for cooling in normal conducting structures. Performing a CFD analysis can add significant time to the design process because of the long and complex simulations and instead, approximations of the heat transfer coefficients and inlet/outlet water temperature rises are made and used directly in the multi-physics analysis. In this work, we first explore the limits of these approximations, identifying when they apply and how accurate they are. We then investigate different pipe geometries and water flow rates to find the thermal limits from RF heating on cavity performance.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI26

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Received ※ 17 August 2022 — Revised ※ 20 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 15 September 2022

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TUPOJO04

R&D for the Realization of a Very High Frequency Crossbar H-Mode Drift Tube Linac

cavity, linac, vacuum, coupling

341

M. Heilmann, C. Zhang
GSI, Darmstadt, Germany
H. Podlech
IAP, Frankfurt am Main, Germany

A 704.4 MHz Crossbar H-mode (CH) drift tube linac has been proposed for performing a radio frequency jump at ß = 0.2. Up to now, the highest frequency of the constructed CH cavities is 360 MHz. Simulations have shown that the operation frequency for an H210-mode cavity can be up to ~800 MHz. At 704.4 MHz, the cavity dimensions become small, which bring challenges for many practical problems e.g. construction, vacuum pumping and RF coupling. This paper presents the performed R&D studies for the realization of such a very high frequency cavity.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO04

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Received ※ 14 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 31 August 2022

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TUPOJO09

High Power RF Conditioning of the ESS DTL1

cavity, vacuum, controls, operation

356

F. Grespan, C. Baltador, L. Bellan, D. Bortolato, M. Comunian, E. Fagotti, M.G. Giacchini, M. Montis, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy
F. Grespan, B. Jones, L. Page, A.G. Sosa, E. Trachanas, R. Zeng
ESS, Lund, Sweden
D.J.P. Nicosia
CERN, Meyrin, Switzerland

The first tank of Drift Tube Linac (DTL) for the European Spallation Source ERIC (ESS), delivered by INFN, has been installed in the ESS tunnel in Summer 2021. The DTL-1 is designed to accelerate a 62.5 mA proton beam from 3.62 MeV up to 21 MeV. It consists of 61 accelerating gaps, alternate with 60 drift tubes equipped with Permanent Magnet Quadrupole (PMQ) in a FODO lattice. The remaining drift tubes are equipped with dipole correctors (steerers), beam position monitors (BPMs) or empty. The total length of the cavity is 7.6 m and it is stabilized by post couplers. Two waveguide couplers feed the DTL with the 2.2 MW of RF power required for beam operation, equally divided by RF power losses and beam power. This paper first presents the main systems required for the DTL conditioning. Then it summarizes the main steps and results of this high power RF conditioning done at ESS to prepare the DTL for the consequent beam commissioning.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO09

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Received ※ 15 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 15 September 2022

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TUPOJO10

Hardware Commissioning With Beam at the European Spallation Source: Ion Source to DTL1

MMI, ion-source, linac, rfq

360

B. Jones, R.A. Baron, C.S. Derrez, F. Grespan, V. Grishin, Y. Levinsen, N. Milas, R. Miyamoto, D.J.P. Nicosia, D. Noll, D.C. Plostinar, A.G. Sosa, E. Trachanas, R. Zeng
ESS, Lund, Sweden
C. Baltador, L. Bellan, M. Comunian, F. Grespan, A. Palmieri
INFN/LNL, Legnaro (PD), Italy
I. Bustinduy, N. Garmendia
ESS Bilbao, Zamudio, Spain
L. Neri
INFN/LNS, Catania, Italy

The European Spallation Source (ESS) aims to build and commission a 2 MW proton linac ready for neutron production in 2025. The normal conducting section of the ESS linac is designed to accelerate a 62.5 mA proton beam to 90 MeV at 14 Hz. The section consists of a microwave ion source, Radio Frequency Quadrupole (RFQ) and 5-tank Drift Tube Linac (DTL). All sections are provided to ESS by in-kind partners across Europe. This paper reports the recent progress on the assembly, installation, testing and commissioning of the ESS normal conducting linac.

Slides TUPOJO10 [2.397 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO10

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Received ※ 12 August 2022 — Revised ※ 15 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 03 September 2022

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TUPOGE19

Status of the New Intense Heavy Ion DTL Project Alvarez 2.0 at GSI

cavity, quadrupole, focusing, operation

537

L. Groening, T. Dettinger, X. Du, M. Heilmann, M. Kaiser, E. Merz, S. Mickat, A. Rubin, C. Xiao
GSI, Darmstadt, Germany

The Alvarez-type post-stripper DTL at GSI accelerates intense ion beams with A/q <= 8.5 from 1.4 to 11.4 MeV/u. After more than 45 years of operation it suffers from aging and its design does not meet the requirements of the upcoming FAIR project. The design of a new 10⁸ MHz Alvarez-type DTL has been completed and series components for the 55 m long DTL are under production. In preparation, a first cavity section as First of Series has been operated at nominal RF-parameters. Additionally, a prototype drift tube with internal pulsed quadrupole has been built and operated at nominal parameters successfully. High quality of copper-plating of large components and add-on parts has been achieved within the ambitious specifications. This contribution summarizes the current project status of Alvarez 2.0 at GSI and sketches the future path to completion.

Slides TUPOGE19 [1.197 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE19

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Received ※ 18 August 2022 — Revised ※ 30 August 2022 — Accepted ※ 08 September 2022 — Issue date ※ 15 September 2022

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TUPORI27

Preliminary Study on the Implementation of the Orbit Correction to the 100 Mev Proton Linac at KOMAC

linac, simulation, proton, GUI

613

S. Lee, J.J. Dang, D.-H. Kim, H.S. Kim, H.-J. Kwon, S.P. Yun
KOMAC, KAERI, Gyeongju, Republic of Korea

Funding: This work has been supported through KOMAC operation fund of KAERI by the Korean government (MIST)
At Korea Multipurpose Accelerator Complex (KOMAC), we have been operating a 100 MeV linac consisting of 11 DTLs with several beam position monitors (BPMs) and steering magnets installed for the orbit correction of the proton beam. The orbit correction can be performed through the response matrix between the position measurements from the BPMs and the field strength of the steering magnets. In this work, we will show the calculated response matrix from the simulation results, and describe the detailed plans for the implementation of the orbit correction in the real linac system at KOMAC.

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPORI27

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Received ※ 20 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 05 September 2022 — Issue date ※ 15 September 2022

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WE1AA05

The Muon Linac Project at J-PARC

linac, rfq, acceleration, experiment

636

Y. Kondo, Y. Fuwa, R. Kitamura, K. Moriya, T. Takayanagi
JAEA/J-PARC, Tokai-mura, Japan
S. Bae, H. Choi, S. Choi, B. Kim, H.S. Ko
SNU, Seoul, Republic of Korea
E. Cicek, H. Ego, Y. Fukao, K. Futatsukawa, N. Kawamura, T. Mibe, Y. Miyake, S. Mizobata, M. Otani, N. Saito, K. Shimomura, T. Yamazaki, M. Yoshida
KEK, Ibaraki, Japan
K. Hasegawa
QST Rokkasho, Aomori, Japan
N. Hayashizaki
Research Laboratory for Nuclear Research, Tokyo Institute of Technology, Tokyo, Japan
T. Iijima, Y. Sue, K. Sumi
Nagoya University, Graduate School of Science, Chikusa-ku, Nagoya, Japan
H. Iinuma, Y. Nakazawa
Ibaraki University, Ibaraki, Japan
K. Inami, K. Suzuki, M. Yotsuzuka
Nagoya University, Nagoya, Japan
K. Ishida
RIKEN Nishina Center, Wako, Japan
Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
T. Morishita
JAEA/LINAC, Ibaraki-ken, Japan
G.P. Razuvaev
Budker INP & NSU, Novosibirsk, Russia
Y. Takeuchi, J. Tojo
Kyushu University, Fukuoka, Japan
E. Won
Korea University, Seoul, Republic of Korea
H.Y. Yasuda
University of Tokyo, Tokyo, Japan

The muon linac project for the precise measurement of the muon anomalous magnetic and electric dipole moments, which is currently one of the hottest issues of the elementary particle physics, is in progress at J-PARC. The muons from the J-PARC muon facility are once cooled to room temperature, then accelerated up to 212 MeV with a normalized emittance of 1.5 pi mm mrad and a momentum spread of 0.1%. Four types of accelerating structures are adopted to obtain the efficient acceleration with a wide beta range from 0.01 to 0.94. The project is moving into the construction phase. They already demonstrated the re-acceleration scheme of the decelerated muons using a 324-MHz RFQ in 2017. The high-power test of the 324-MHz Interdigital H-mode (IH) DTL using a prototype cavity will be performed in 2021. The fabrication of the first module of 14 modules of the 1296-MHz Disk and Washer (DAW) CCL will be done to confirm the production process. Moreover, the final design of the travelling wave accelerating structure for the high beta region is also proceeding. In this presentation, the recent progress toward the realization of the world first muon linac will be presented.

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Slides WE1AA05 [3.764 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-WE1AA05

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Received ※ 14 August 2022 — Revised ※ 21 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 16 September 2022

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FR1AA05

Design Considerations for a Proton Linac for a Compact Accelerator Based Neutron Source

MEBT, emittance, neutron, rfq

878

M. Abbaslou
UVIC, Victoria, Canada
A. Gottberg, O.K. Kester, R.E. Laxdal, M. Marchetto
TRIUMF, Vancouver, Canada
D.D. Maharaj, D. Marquardt
University of Windsor, Windsor, Ontario, Canada
S. Tabbassum
Purdue University, West Lafayette, Indiana, USA

New neutron sources are needed both for Canada and internationally as access to reactor based neutrons shrinks. Compact Accelerator-based Neutron Sources (CANS) offer the possibility of an intense source of pulsed neutrons with a capital cost significantly lower than spallation sources. In an effort to close the neutron gap in Canada a prototype, Canadian compact accelerator-based neutron source (PC-CANS) is proposed for installation at the University of Windsor. The PC-CANS is envisaged to serve two neutron science instruments, a boron neutron capture therapy (BNCT) station and a beamline for fluorine-18 radioisotope production for positron emission tomography (PET). To serve these diverse applications of neutron beams, a linear accelerator solution is selected, that will provide 10 MeV protons with a peak current of 10 mA within a 5% duty cycle. The accelerator is based on an RFQ and DTL with a post-DTL pulsed kicker system to simultaneously deliver macro-pulses to each end-station. Several choices of Linac technology are being considered and a comparison of the choices will be presented.

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Slides FR1AA05 [1.945 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-FR1AA05

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Received ※ 27 August 2022 — Revised ※ 29 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 03 September 2022

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