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Chung, Moses
Intense Beam and Accelerator Laboratory (IBAL)
Research Interests
  • Accelerator, beam physics and diagnostics, plasma

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Commissioning of the electron injector for the AWAKE experiment

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Title
Commissioning of the electron injector for the AWAKE experiment
Author
Kim, S.-YDoebert, S.Apsimon, O.Apsimon, R.Burt, G.Dayyani, M.Gessner, S.Gorgisyan, I.Granados, E.Mazzoni, S.Moody, J.T.Turner, M.Williamson, B.Chung, Moses
Issue Date
2020-02
Publisher
Elsevier BV
Citation
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.953, pp.163194
Abstract
The advanced wakefield experiment (AWAKE) at CERN is the first proton beam-driven plasma wakefield acceleration experiment. The main goal of AWAKE RUN 1 was to demonstrate seeded self-modulation (SSM) of the proton beam and electron witness beam acceleration in the plasma wakefield. For the AWAKE experiment, a 10-meter-long Rubidium-vapor cell together with a high-power laser for ionization was used to generate the plasma. The plasma wakefield is driven by a 400 GeV/c proton beam extracted from the super proton synchrotron (SPS), which undergoes a seeded self-modulation process in the plasma. The electron witness beam used to probe the wakefields is generated from an S-band RF photo-cathode gun and then accelerated by a booster structure up to energies between 16 and 20 MeV. The first run of the AWAKE experiment revealed that the maximum energy gain after the plasma cell is 2 GeV, and the SSM mechanism of the proton beam was verified. In this paper, we will present the details of the AWAKE electron injector. A comparison of the measured electron beam parameters, such as beam size, energy, and normalized emittance, with the simulation results was performed.
URI
https://scholarworks.unist.ac.kr/handle/201301/30755
URL
https://www.sciencedirect.com/science/article/pii/S0168900219314883?via%3Dihub
DOI
10.1016/j.nima.2019.163194
ISSN
0168-9002
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