Nb$_{3}$ Sn SRF Photogun High Power Test at Cryogenic Temperatures
IEEE Transactions on Applied Superconductivity(2023)
摘要
Superconducting RF (SRF) photoguns are emerging as promising candidates to produce highly stable electrons for Ultra fast Electron Diffraction/Microscopy (EUD/UEM) applications due to the ultrahigh shot-to-shot stability compared to room temperature RF photoguns. SRF technology was prohibitively expensive for industrial use until two recent advancements: Nb
$_{3}$
Sn and conduction cooling. SRF gun can provide a CW operation capability while consuming only several Watts of RF power which eliminates the need of an expensive high power RF system and saves a facility footprint. Euclid is developing a continuous wave (CW), 1.5-cell, MeV-scale SRF conduction cooled photogun operating at 1.3 GHz. In this paper, we present first high power results of the gun covered with Nb
$_{3}$
Sn.
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关键词
Accelerating cavities,cryocoolers,electron gun,Nb $_{3}$ Sn,stand-alone cryomodule,superconductivity,UED/UEM
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