First e⁻/γ Commissioning Results for the GlueX Experiment/Hall D at CEBAF

Conference · Tue Sep 01 04:00:00 EDT 2015

OSTI ID:1223478

McCaughan, Michael D. ^[1]; Satogata, Todd J. ^[1]; Roblin, Yves R. ^[1]; Benesch, Jay F. ^[1]

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1. Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

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 10⁷-10⁸ 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.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1223478
• Report Number(s): JLAB-ACC--15-2026; DOE/OR/23177--3540
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATOR FACILITIES
BEAM TRANSPORT
BREMSSTRAHLUNG
CEBAF ACCELERATOR
COLLIMATORS
COMMISSIONING
DESIGN
DIAMONDS
ELECTRON BEAMS
ELECTRONS
GEV RANGE 01-10
PHOTONS
SPIN ORIENTATION