Publications
Publication Information
| Title | CAVITY PRODUCTION AND TESTING OF THE FIRST C75 CRYOMODULE FOR CEBAF |
| Authors | G. Ciovati, G. Cheng, E. Daly, M. Drury, J. Fisher, K. Macha, A. McEwen, K. Davis, D. Forehand, F. Marhauser, A. Mitchell, R. Rimmer, T. Reilly, Song Wang |
| JLAB number | JLAB-ACC-21-3461 |
| LANL number | (None) |
| Other number | DOE/OR/23177-5661 |
| Document Type(s) | (Meeting) |
| Category: | SRF Technology |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Meeting Poster compiled for SRF 2021 | |
| Publication Abstract: | The CEBAF cryomodule rework program was updated over the last few years to increase the energy gain of refurbished cryomodules to 75 MeV. The concept recycles the waveguide end-groups from original CEBAF cavities fabricated in the 1990s and replaces the five elliptical cells in each with a new optimized cell shape fabricated from large-grain, ingot Nb material. Eight cavities were fabricated at Research Instruments, Germany, and two cavities were built at Jefferson Lab. Each cavity was processed by electropolishing and tested at 2.07 K. The best eight cavities were assembled into ?cavity pairs? and re-tested at 2.07 K, before assembly into the cryomodule. All but one cavity in the cryomodule were within 10% of the target accelerating gradient of 19 MV/m with a quality factor of 8E9. The performance limitations were field emission and multipacting |
| Experiment Numbers: | other |
| Group: | SRF Research & Dev |
| Document: | pptx |
| DOI: | |
| Accepted Manuscript: | |
| Supporting Documents: | |
| Supporting Datasets: | |