First e?/? Commissioning Results for the GlueX Experiment/Hall D at CEBAF [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 662.1 Fireworks (Pyrotechnics)
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2015
• Mô tả vật lý: Size: 4 p. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 268194
• Chủ đề: 1. 43 particle accelerators; 2. Electron beams; 3. Electrons; 4. Gev range 01-10; 5. Photons

Tóm tắt

 Experimental Hall D, with flagship experiment GlueX, was constructed as part of the 12 GeV CEBAF upgrade. A new magnetically extracted electron beam line was installed to support this hall. Bremsstrahlung photons from retractable radiators are delivered to the experiment through a series of collimators following a long drift to allow for beam convergence. Coherent Bremsstrahlung generated by interaction with a diamond radiator will achieve a nominal 40% linear polarization and photon energies between 8.5 and 9 GeV from 12.1 GeV electrons, which are then tagged or diverted to a medium power 60kW electron dump. The expected photon flux is 10<
 sup>
 7<
 /sup>
 -10<
 sup>
 8<
 /sup>
  Hz. This paper discusses the experimental line design, commissioning experience gained since first beam in spring 2014, and the present results of beam commissioning by the experiment.