The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Tennant, C. AU - Benson, S.V. AU - Douglas, D. AU - Li, R. AU - Tsai, C.-Y. ED - Ramberger, Suitbert ED - Draper, Mick ED - Schaa, Volker RW TI - Studies of CSR and Microbunching at the Jefferson Laboratory ERLs J2 - Proc. of ERL2017, Geneva, Switzerland, June 18-23, 2017 C1 - Geneva, Switzerland T2 - ICFA Advanced Beam Dynamics Workshop T3 - 59 LA - english AB - One attractive feature of energy recovery linacs (ERLs) is they are source limited. However as beam brightness increases so too do the effects of coherent synchrotron radiation (CSR) and the microbunching instability. The Low Energy Recirculator Facility at Jefferson Laboratory provides a test bed to characterize aspects of CSR's effect on the beam by measuring the energy extraction via CSR as a function of bunch compression. Data was recorded with acceleration occuring on the rising part of the RF waveform while the full compression point was moved along the backleg of the machine and the response of the beam measured. Acceleration was moved to the falling part of the RF waveform and the experiment repeated. Initial start-to-end simulations using a 1D CSR model show good agreement with measurements. The experiment motivated the design of a modified Continuous Electron Beam Accelerator Facility style arc with control of CSR and the microbunching gain. Insights gained from that study informed designs for recirculation arcs in an ERL-driven electron cooler for Jefferson Laboratory's Electron Ion Collider. Progress on the design and outstanding challenges of the cooler are discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 59 EP - 64 KW - bunching KW - emittance KW - electron KW - linac KW - simulation DA - 2018/05 PY - 2018 SN - 978-3-95450-190-8 DO - 10.18429/JACoW-ERL2017-WEIBCC004 UR - http://jacow.org/erl2017/papers/weibcc004.pdf ER -