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RIS citation export for MOPA87: Design of the Cathode Stalk for the LCLS-II-HE Low Emittance Injector

AU  - Konomi, T.
AU  - Adolphsen, C.
AU  - Gatzmaga, S.
AU  - Hartung, W.
AU  - Kelly, M.P.
AU  - Kim, S.H.
AU  - Lewellen, J.W.
AU  - Miller, S.J.
AU  - Morris, D.G.
AU  - Murcek, P.
AU  - Petersen, T.B.
AU  - Popielarski, J.T.
AU  - Saito, K.
AU  - Taylor, A.
AU  - Xiang, R.
AU  - Xu, T.
ED  - Biedron, Sandra
ED  - Simakov, Evgenya
ED  - Milton, Stephen
ED  - Anisimov, Petr M.
ED  - Schaa, Volker R.W.
TI  - Design of the Cathode Stalk for the LCLS-II-HE Low Emittance Injector
J2  - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022
CY  - Albuquerque, NM, USA
T2  - International Particle Accelerator Conference
T3  - 5
LA  - english
AB  - Superconducting radio-frequency (SRF) electron guns are attractive for delivery of beams at a high bunch repetition rate with a high accelerating field. An SRF gun is the most suitable injector for the high-energy upgrade of the Linac Coherent Light Source (LCLS-II-HE), which will produce high-energy X-rays at high repetition rate. An SRF gun is being developed for LCLS-II-HE as a collaborative effort by FRIB, HZDR, ANL, and SLAC. The cavity operating frequency is 185.7 MHz, and the target accelerating field at the photocathode is 30 MV/m. The photocathode is replaceable. The cathode is held by a fixture (’cathode stalk’) that is designed for thermal isolation and particle-free cathode exchange. The stalk must allow for precise alignment of the cathode position, cryogenic or room-temperature cathode operating temperature, and DC bias to inhibit multipacting. We are planning a test of the stalk to confirm that the design meets the requirements for RF power dissipation and biasing. In this presentation, we will describe the cathode stalk design and RF/DC stalk test plan.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 253
EP  - 255
KW  - cathode
KW  - cavity
KW  - gun
DA  - 2022/10
PY  - 2022
SN  - 2673-7000
SN  - 978-3-95450-232-5
DO  - doi:10.18429/JACoW-NAPAC2022-MOPA87
UR  - https://jacow.org/napac2022/papers/mopa87.pdf
ER  -