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TUPOJO09 |
High Power RF Conditioning of the ESS DTL1 |
356 |
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- 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
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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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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO09
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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 |
360 |
TUOPA01 |
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- 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
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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.
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Slides TUPOJO10 [2.397 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOJO10
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About • |
Received ※ 12 August 2022 — Revised ※ 15 August 2022 — Accepted ※ 28 August 2022 — Issue date ※ 03 September 2022 |
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TUPOPA04 |
First Beam Matching and Transmission Studies on the ESS RFQ |
414 |
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- D. Noll, R.A. Baron, C.S. Derrez, E.M. Donegani, M. Eshraqi, F. Grespan, H. Hassanzadegan, B. Jones, Y. Levinsen, N. Milas, R. Miyamoto, D.C. Plostinar, A.G. Sosa, R. Zeng
ESS, Lund, Sweden
- A.C. Chauveau, O. Piquet
CEA-IRFU, Gif-sur-Yvette, France
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The European Spallation Source will be driven by a 5 MW linear accelerator, producing 2.86 ms long proton beam pulses with a peak current of 62.5 mA at 14 Hz. Following the source commissioning in 2018 and 2019, the RFQ was successfully conditioned and subsequently commissioned with beam in 2021. In this paper, we will present results of studies on beam matching to the RFQ, both for low and high current beam modes, and will compare these results to model predictions.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOPA04
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About • |
Received ※ 26 August 2022 — Accepted ※ 05 September 2022 — Issue date ※ 05 September 2022 |
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TUPOPA05 |
RFQ Performance During RF Conditioning and Beam Commissioning at ESS |
418 |
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- R. Zeng, G.S. Fedel, B. Jones, R. Miyamoto, D.J.P. Nicosia, D. Noll, A.G. Sosa, A.M. Svensson, E. Trachanas
ESS, Lund, Sweden
- M. Baudrier
CEA-DRF-IRFU, France
- A.C. Chauveau, M.J. Desmons, P. Hamel, O. Piquet
CEA-IRFU, Gif-sur-Yvette, France
- F. Grespan
INFN/LNL, Legnaro (PD), Italy
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RFQ at ESS has been successfully gone through RF conditioning, RF re-conditioning and low duty cycle beam commissioning. RFQ fulfills required functions and overall performance is satisfactory. RF conditioning, three RF re-conditionings after LEBT intervention and beam commissioning will be reported and RFQ performance during these periods will be described. RFQ performance in a large extent is reflected by dynamics and interactions between RF, cavity and beam. Thanks to advanced hardware capabilities and intelligent software intelligence, observation of those dynamics and interactions are done in detailed level. Analysis of those dynamics and interaction will be introduced. Some techniques to deal with challenges resulted from those dynamics and interactions will also be discussed.
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Poster TUPOPA05 [25.281 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOPA05
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About • |
Received ※ 18 August 2022 — Revised ※ 25 August 2022 — Accepted ※ 31 August 2022 — Issue date ※ 05 September 2022 |
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