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MOPOB32 | Design and Test of the Prototype Tuner for 3.9 GHz SRF Cavity for LCLS II Project | 140 |
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Fermilab is responsible for the design of the 3.9GHz cryomodule for the LCLS-II that will operate in continuous wave (CW) mode. Bandwidth of the SRF cavities will be in the range of the 180Hz. In our tuner design, we adopted as the slow tuner-mechanism slim blade tuner originated by INFN for the European XFEL 3.9GHz. At the same time bandwidth of the SRF cavities for LCLS II will be in the range of the 180Hz and fine/fast tuning of the cavity frequency required. We added to the design fast/fine tuner made with 2 encapsulated piezos. First prototype tuner has been built and went through testing at warm conditions. Details of the design and summary of the tests will be presented in this paper. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOPOB32 | |
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MOPOB33 | LCLS-II Tuner Assembly for the Prototype Cryomodule at FNAL | 143 |
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The tuner design for LCLS-II has been thoroughly verified and fabricated for used in the LCLS-II prototype modules. This paper will present the lessons learned during the installation of these tuners for the prototype modules at FNAL, including installation procedures, best practices, and challenges encountered. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOPOB33 | |
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WEB3CO03 | 650 MHz Elliptical Superconducting RF Cavities for PIP-II Project | 859 |
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Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. Proton Improvement Plan-II at Fermilab is an 800 MeV superconducting pulsed linac which is also capable of running in CW mode. The high energy section operates from 185 MeV to 800 MeV instigated using 650 MHz elliptical cavities. The low-beta (LB) βG =0.61 portion will accelerate protons from 185 MeV-500 MeV, while the high-beta (HB) βG = 0.92 portion of the linac will acceler-ate from 500 to 800 MeV. The development of both LB and HB cavities is taking place under the umbrella of the Indian Institutions Fermilab Collaboration (IIFC). This paper presents the design methodology adopted for both low-beta and high-beta cavities starting from the RF design yielding mechanical dimensions of the cavity cells and, then moving to the workable dressed cavity design. Designs of end groups (main coupler side and field probe side), helium vessel, coupler, and tuner are the same for both cavities everywhere where it is possible. The design, analysis and integration of dressed cavity are presented in detail. |
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Slides WEB3CO03 [11.396 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEB3CO03 | |
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