HIGH CURRENT HIGH CHARGE MAGNETIZED AND BUNCHED ELEC-TRON BEAM FROM A DC PHOTOGUN FOR JLEIC COOLER

Conference · Sat Jun 01 00:00:00 EDT 2019

DOI:https://doi.org/10.18429/JACoW-IPAC2019-TUPTS105· OSTI ID:1975115

Adderley, P. ^[1]; Benesch, J. ^[1]; Bullard, D. ^[1]; Grames, J. ^[1]; Guo, J. ^[1]; Hannon, F. ^[1]; Hansknecht, J. ^[1]; Hernandez Garcia, C. ^[1]; Kazimi, R. ^[1]; Krafft, G. ^[2]; Mamun, M. A. ^[1]; Poelker, M. ^[1]; Suleiman, R. ^[1]; Tiefenback, M. ^[1]; Wang, Y. ^[2]; Zhang, S. ^[1]; Delayen, J. ^[3]; Wijethunga, S. ^[3]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
3. Old Dominion Univ., Norfolk, VA (United States)

A high current, high charge magnetized electron beam-line was developed for fast and efficient cooling of ion beams for the proposed Jefferson Lab Electron Ion Col-lider (JLEIC). In this paper, we describe recent achieve-ments that include the generation of picosecond-bunch magnetized beams at average currents up to 28 mA with exceptionally long photocathode lifetime, and independent demonstrations of magnetized beam with high bunch charge up to 700 pC at 10s of kHz repetition rates. In addition, a detailed description of an extremely stable and reliable fiber-based drive laser system that employs a gain-switched master oscillator is presented. These ac-complishments mark important steps toward demonstrat-ing the feasibility of a technically challenging JLEIC cooler design using magnetized beams

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1975115
• Report Number(s): JLAB-ACC-19-3008; DOE/OR/23177-6239
• Country of Publication: United States
• Language: English