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TUPF11 |
Design and Initial Demonstration Results of Laser Wire Scanner for Energy Recovery Linacs |
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- B.T. Jacobson, T.J. Campese, A.Y. Murokh
RadiaBeam, Santa Monica, USA
- A.C. Bartnik, B.M. Dunham
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
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Energy Recovery LINACs (ERL's) can produce electron beams of smaller emittance than in synchrotron rings, with high average current, and without inefficiencies involved in dumping a high-powered accelerated beam. The ERL group at the Cornell Lab for Accelerator-based ScienceS and Education (CLASSE) is currently testing an injector for an ERL based X-ray light source: a superconducting RF (SRF) accelerator coupled to a DC electron gun and high rep rate (1.3 GHz) photocathode drive laser, capable of producing a CW beam of 80 pC bunches (100 mA ave current). Traditional transverse diagnostics are incapable of operation with such high average currents, motivating the the use of a Laser Wire Scanner (LWS). RadiaBeam Technologies, in collaboration with the Cornell ERL group, is developing a LWS system capable of measuring e-beam profiles in both transverse dimensions as well as obtaining the longitudinal beam profile. Due to the low energy of the injector output (5-15 MeV) and beam halo scraping, detection of laser-scattered photons is significantly more challenging than in previous LWS system. This contribution presents a LWS prototype design and initial demonstration results.
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