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arXiv · 1608.07758

Design of a High-bunch-charge 112-MHz Superconducting RF Photoemission Electron Source

T. Xin·J. C. Brutus·Sergey A. Belomestnykh·I. Ben-Zvi·C. H. Boulware·T. L. Grimm·T. Hayes·Vladimir N. Litvinenko·K. Mernick·G. Narayan·P. Orfin·I. Pinayev·T. Rao·F. Severino·J. Skaritka·K. Smith·R. Than·J. Tuozzolo·E. Wang·B. Xiao·H. Xie·A. Zaltsman
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Abstract

High-bunch-charge photoemission electron-sources operating in a continuous wave (CW) mode are required for many advanced applications of particle accelerators, such as electron coolers for hadron beams, electron-ion colliders, and free-electron lasers (FELs). Superconducting RF (SRF) has several advantages over other electron-gun technologies in CW mode as it offers higher acceleration rate and potentially can generate higher bunch charges and average beam currents. A 112 MHz SRF electron photoinjector (gun) was developed at Brookhaven National Laboratory (BNL) to produce high-brightness and high-bunch-charge bunches for the Coherent electron Cooling Proof-of-Principle (CeC PoP) experiment. The gun utilizes a quarter-wave resonator (QWR) geometry for assuring beam dynamics, and uses high quantum efficiency (QE) multi-alkali photocathodes for generating electrons.

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T. Xin, J. C. Brutus, Sergey A. Belomestnykh, I. Ben-Zvi, C. H. Boulware, T. L. Grimm, T. Hayes, Vladimir N. Litvinenko, K. Mernick, G. Narayan, P. Orfin, I. Pinayev, T. Rao, F. Severino, J. Skaritka, K. Smith, R. Than, J. Tuozzolo, E. Wang, B. Xiao, H. Xie, A. Zaltsman. 2016-08-28. Design of a High-bunch-charge 112-MHz Superconducting RF Photoemission Electron Source. https://doi.org/10.1063/1.4962682

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