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@inproceedings{tanaka:ipac2021-frxb07,
author = {O.A. Tanaka and N. Higashi and T. Miyajima},
title = {{Injector Optimization for the IR-FEL Operation at the Compact ERL at KEK}},
booktitle = {Proc. IPAC'21},
pages = {4531--4534},
eid = {FRXB07},
language = {english},
keywords = {emittance, FEL, gun, operation, laser},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-FRXB07},
url = {https://jacow.org/ipac2021/papers/frxb07.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-FRXB07},
abstract = {{The Compact Energy Recovery Linac (cERL) at KEK is a test accelerator to develop ERL technologies and to operate with a high average beam current and a high beam quality. cERL consists of a photoinjector, a main linac for energy recovery, a recirculation loop and a beam dump. A recent upgrade of the cERL to the middle Infrared Free Electron Laser (IR-FEL) imposed new conditions to maintain beam parameters. Therefore, the injector should be optimized to meet the following requirements at the exit of the main linac. The rms bunch length should be 2 ps, the rms longitudinal emittance should be kept the least, and simultaneously the rms transverse emittance should be kept less than 3 c mm mrad. In this work we describe the strategy and results of the injector optimization to achieve the better performance of the cERL-FEL.}},
}