Emittance growth and energy loss due to coherent synchrotron radiation in a bunch compressor
Electron bunches of high charge (up to 10 nC) are compressed in length in the Compact Linear Collider Test Facility magnetic chicane to less than 0.4 mm rms. The short bunches radiate coherently in the chicane magnetic field, and the horizontal and longitudinal phase space density distributions are affected. This paper reports the results of beam emittance and momentum measurements. Horizontal and vertical emittances and momentum spectra were measured for different bunch compression factors and bunch charges. In particular, for 10 nC bunches, the mean beam momentum decreased by about 5% while the rms momentum spread increased from 2% to 8%. The experimental results are compared with simulations made with the code TRAFIC4.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 839469
- Report Number(s):
- JLAB-ACP-00-07; DOE/ER/40150-3347; TRN: US0501702
- Journal Information:
- Physical Review Special Topics - Accelerators and Beams, Vol. 3, Issue 12; Other Information: Paper is linked at: http://www1.jlab.org/UL/publications/view_pub.cfm?pub_id=6030; PBD: 1 Dec 2000; ISSN 1098-4402
- Country of Publication:
- United States
- Language:
- English
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