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RIS citation export for MOYE3: Experiments on a Conduction Cooled Superconducting Radio Frequency Cavity with Field Emission Cathode

AU  - Ji, Y.
AU  - Dhuley, R.
AU  - Edwards, C.J.
AU  - Korampally, V.
AU  - Mihalcea, D.
AU  - Mohsen, O.
AU  - Piot, P.
AU  - Salehinia, I.
AU  - Thangaraj, J.C.T.
ED  - Biedron, Sandra
ED  - Simakov, Evgenya
ED  - Milton, Stephen
ED  - Anisimov, Petr M.
ED  - Schaa, Volker R.W.
TI  - Experiments on a Conduction Cooled Superconducting Radio Frequency Cavity with Field Emission Cathode
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  - To achieve Ampere-class electron beam accelerators the pulse delivery rate need to be much higher than the typical photo injector repetition rate of the order of a few kilohertz. We propose here an injector which can, in principle, generate electron bunches at the same rate as the operating RF frequency. A conduction-cooled superconducting radio frequency (SRF) cavity operating in the CW mode and housing a field emission element at its region of high axial electric field can be a viable method of generating high-repetition-rate electron bunches. In this paper, we report the development and experiments on a conduction-cooled Nb₃Sn cavity with a niobium rod intended as a field emitter support. The initial experiments demonstrate ~0.4 MV/m average accelerating gradient, which is equivalent of peak gradient of 3.2 MV/m. The measured RF cavity quality factor is 1.4 × 10⁸ slightly above our goal. The achieved field gradient is limited by the relatively low input RF power and by the poor coupling between the external power supply and the RF cavity. With ideal coupling the field gradient can be as high as 0.6 MV/m still below our goal of about 1 MV/m
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 16
EP  - 18
KW  - cavity
KW  - niobium
KW  - experiment
KW  - accelerating-gradient
DA  - 2022/10
PY  - 2022
SN  - 2673-7000
SN  - 978-3-95450-232-5
DO  - doi:10.18429/JACoW-NAPAC2022-MOYE3
UR  - https://jacow.org/napac2022/papers/moye3.pdf
ER  -