|WEPLM52||Recent Developments of Nb3Sn at Jefferson Lab for SRF Accelerator Application||713|
|SUPLS05||use link to see paper's listing under its alternate paper code|
Funding: U.S. Department of Energy, Office of Science, Office of Nuclear Physics.
The desire to reduce the construction and operating costs of future SRF accelerators motivates the search for alternative, higher-performing materials. Nb3Sn (Tc ~ 18.3 K and Hsh ~ 425 mT) is the front runner. However, tests of early Nb3Sn-coated cavities encountered strong Q-slopes limiting the performance. Learnings from studies of coated materials related to cavity performance prompted significant changes to the coating process. It is now possible to routinely produce slope-free single-cell cavities having Q0 ≥ 2×1010 at 4 K and > 4×1010 at 2 K up to the accelerating gradient in excess of 15 MV/m at its best. Obtaining similar results in five-cell cavities is a current goal to test them under an accelerator environment. This contribution discusses recent developments at Jefferson Lab.
|DOI •||reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-WEPLM52|
|About •||paper received ※ 27 August 2019 paper accepted ※ 31 August 2019 issue date ※ 08 October 2019|
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