TY - JOUR
T1 - Performance of Oak Ridge National Laboratory spallation neutron source proton power upgrade cavities and cryomodule production
AU - Dhakal, P.
AU - Daly, E. F.
AU - Davis, K.
AU - Drury, M.
AU - Fischer, J.
AU - Forehand, D.
AU - Grabowski, A.
AU - Huque, N.
AU - Kent, J.
AU - Macha, K.
AU - McCaughan, M.
AU - McEwen, E. A.
AU - Mitchell, A.
AU - Owen, P.
AU - Stirbet, M.
AU - Wilson, K. M.
AU - Zhao, L.
AU - Howell, M.
AU - Kim, S.
AU - Mammosser, J. D.
N1 - Publisher Copyright:
© 2024 authors.
PY - 2024/10
Y1 - 2024/10
N2 - The Proton Power Upgrade initiative at Oak Ridge National Lab's Spallation Neutron Source aims to greatly boost the capability of proton beam power. This upgrade involves the integration of seven additional cryomodules, each housing four six-cell high-beta (β=0.81) superconducting radio frequency cavities. These cavities, manufactured and processed by Research Instruments in Germany, underwent meticulous treatment, including electropolishing as the bulk and final vital step. Upon delivery to Jefferson Lab, a total of 28 cavities for seven cryomodules, along with an additional four cavities for a spare cryomodule, underwent thorough vertical qualification tests, meeting the required specifications. Following cavity tanking and subsequent rf testing, the assembly of eight cryomodules was successfully executed, with all 32 cavities demonstrating compliance with acceptance criteria. The transportation of the cryomodule to SNS for high-power testing in the tunnel yielded exceptional results. Notably, the performance surpassed specifications, in terms of quality factor and accelerating gradient.
AB - The Proton Power Upgrade initiative at Oak Ridge National Lab's Spallation Neutron Source aims to greatly boost the capability of proton beam power. This upgrade involves the integration of seven additional cryomodules, each housing four six-cell high-beta (β=0.81) superconducting radio frequency cavities. These cavities, manufactured and processed by Research Instruments in Germany, underwent meticulous treatment, including electropolishing as the bulk and final vital step. Upon delivery to Jefferson Lab, a total of 28 cavities for seven cryomodules, along with an additional four cavities for a spare cryomodule, underwent thorough vertical qualification tests, meeting the required specifications. Following cavity tanking and subsequent rf testing, the assembly of eight cryomodules was successfully executed, with all 32 cavities demonstrating compliance with acceptance criteria. The transportation of the cryomodule to SNS for high-power testing in the tunnel yielded exceptional results. Notably, the performance surpassed specifications, in terms of quality factor and accelerating gradient.
UR - http://www.scopus.com/inward/record.url?scp=85206652325&partnerID=8YFLogxK
U2 - 10.1103/PhysRevAccelBeams.27.102001
DO - 10.1103/PhysRevAccelBeams.27.102001
M3 - Article
AN - SCOPUS:85206652325
SN - 2469-9888
VL - 27
JO - Physical Review Accelerators and Beams
JF - Physical Review Accelerators and Beams
IS - 10
M1 - 102001
ER -