Author: Bernardini, J.
Paper Title Page
TUPOGE11 Application of the ASME Boiler and Pressure Vessel Code in the design of SSR Cryomodule Beamlines for PIP-II Project at Fermilab 507
 
  • J. Bernardini, M. Chen, M. Parise, D. Passarelli
    Fermilab, Batavia, Illinois, USA
 
  Funding: Work supported by Fermi Research Alliance, LLC under Contract No. DEAC02- 07CH11359 with the United States Department of Energy, Office of Science, Office of High Energy Physics.
This contribution reports the design of the main components used to interconnect SRF cavities and superconducting focusing lenses in the SSR Cryomodule beamlines, developed in the framework of the PIP-II project at Fermilab. The focus of the present contribution is on the design and testing of the edge-welded bellows according to ASME Boiler and Pressure Vessel Code. The activities performed to qualify the bellows to be assembled in cleanroom, for operation in high vacuum, cryogenic environments, and their characterization from magnetic standpoint, will also be presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE11  
About • Received ※ 22 August 2022 — Revised ※ 24 August 2022 — Accepted ※ 02 September 2022 — Issue date ※ 16 October 2022
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TUPOGE12 Final Design of the Pre-Production SSR2 Cryomodule for PIP-II Project at Fermilab 511
 
  • J. Bernardini, C. Boffo, M. Chen, J. Helsper, M. Kramp, F.L. Lewis, T.H. Nicol, M. Parise, D. Passarelli, V. Roger, G.V. Romanov, B. Squires, M. Turenne
    Fermilab, Batavia, Illinois, USA
 
  Funding: Work supported by Fermi Research Alliance, LLC under Contract No. DEAC02- 07CH11359 with the United States Department of Energy, Office of Science, Office of High Energy Physics.
The present contribution reports the design of the pre-production Single Spoke Resonator Type 2 Cryomodule (ppSSR2 CM), developed in the framework of the PIP-II project at Fermilab. The innovative design is based on a structure, the strongback, which supports the coldmass from the bottom, stays at room temperature during operations, and can slide longitudinally with respect to the vacuum vessel. The Fermilab style cryomodule developed for the prototype Single Spoke Resonator Type 1 (pSSR1) and the prototype High Beta 650 MHz (pHB650) cryomodules is the baseline of the current design, which paves the way for production SSR1 and SSR2 cryomodules for the PIP-II linac. The focus of this contribution is on the results of calculations and finite element analysis performed to optimize the critical components of the cryomodule: vacuum vessel, strongback, thermal shield, and magnetic shield.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE12  
About • Received ※ 24 August 2022 — Revised ※ 26 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 02 September 2022
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TUPOGE13 Niobium to Titanium Electron Beam Welding for SRF Cavities 515
 
  • M. Parise, J. Bernardini, D. Passarelli
    Fermilab, Batavia, Illinois, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
Titanium and niobium are the main materials used for the fabrication of Superconducting Radio Frequency (SRF) cavities. These two metals are usually joined , using various welding techniques, using a third material in between. This contribution focuses on the development of an innovative electron beam welding technique capable of producing a strong bond between these two different materials. Several samples are produced and tested to assess the mechanical strength at room and cryogenic temperature as well as the composition of the resulting welded joint. Also, the first units of the Single Spoke Resonator type 2 (SSR2) cavities for the Proton Improvement Plan-II (PIP-II [1]) have been fabricated joining directly various grades of titanium to niobium and results gathered through the fabrication will be reported.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE13  
About • Received ※ 14 August 2022 — Revised ※ 17 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 02 September 2022
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TUPOGE14 Beamline Volume Relief Analysis for the PIP-II SSR2 Cryomodule at Fermilab 519
 
  • M. Parise, J. Bernardini, D. Passarelli
    Fermilab, Batavia, Illinois, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
The beam volume of the Pre-Production Single Spoke Resonator type 2 (ppSSR2) cryomodule [1] for the Proton Improvement Plan-II (PIP-II) [2] project will be protected against over-pressurization using a burst disk. This contri- bution focuses on the analysis of the relief of such trapped volume during a catastrophic scenario with multiple systems failures. An analytical model, able to predict the pressure in the beam volume depending of the various boundary condi- tions, has been developed and will be presented along with the results.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE14  
About • Received ※ 24 August 2022 — Revised ※ 31 August 2022 — Accepted ※ 02 September 2022 — Issue date ※ 02 September 2022
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TUPOGE16 Standardization and First Lessons Learned of the Prototype HB650 Cryomodule for PIP-II at Fermilab 526
 
  • V. Roger, J. Bernardini, S.K. Chandrasekaran, C.J. Grimm, O. Napoly, J.P. Ozelis, M. Parise, D. Passarelli
    Fermilab, Batavia, Illinois, USA
  • N. Bazin, R. Cubizolles
    CEA-IRFU, Gif-sur-Yvette, France
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
The prototype High Beta 650 MHz cryomodule (pHB650 CM) has been designed by an integrated design team, consisting of Fermilab (USA), CEA (France), STFC UKRI (UK), and RRCAT (India). The manufacturing and assembly of this prototype cryomodule is being done at Fermilab, whereas the production cryomodules will be manufactured and assembled by STFC-UKRI. As the first PIP-II cryomodule for which standardization was applied, the design, manufacturing and assembly of this cryomodule led to significant lessons being learnt and experiences gathered. These were incorporated into the design of the pre-production Single Spoke Resonator Type 2 cryomodule (ppSSR2 CM) and the pre-production Low Beta 650 MHz cryomodule (ppLB650 CM). This paper presents the pHB650 CM lessons learned and experiences gathered from the design to the lower coldmass assembly and how this cryomodule has a positive impact on all the next Proton Improvement Plan-II (PIP-II) cryomodules due to the standardization set up among SSR and 650 cryomodules.
 
poster icon Poster TUPOGE16 [1.478 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOGE16  
About • Received ※ 11 August 2022 — Revised ※ 17 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 15 September 2022
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THPOGE13 Design of Production PIP-II SSR1 Cavities 822
 
  • C.S. Narug, J. Bernardini, M. Parise, D. Passarelli
    Fermilab, Batavia, Illinois, USA
 
  Funding: Work supported by the Fermi National Accelerator Laboratory, managed and operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy.
The testing and manufacturing process of the PIP-II Single Spoke Resonators Type 1 (SSR1) prototype jacketed cavity presented opportunities for refinement of the production series. Experience from the prototype cavity and the design of other cavities at Fermilab were used. The mechanical design of the production jacketed cavity has been modified from the prototype design to allow for improvements in overall performance, structural behavior, and manufacturability of the weld joints.
 
poster icon Poster THPOGE13 [1.199 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOGE13  
About • Received ※ 14 August 2022 — Revised ※ 23 August 2022 — Accepted ※ 01 September 2022 — Issue date ※ 02 September 2022
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