The JLAB Hall D Photon Beamline
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
The CEBAF energy upgrade to 12 GeV provides an opportunity to produce high-energy photon beams which will be used for a new generation of photoproduction experiments. The GlueX, one of the flagship experiments of the 12 GeV program, will make use of a linearly polarized photon beam to search for mesons with gluonic excitations. The photon beam will be produced in the coherent bremsstrahlung process by 12 GeV electrons incident on a thin radiator. The fraction of linearly polarized photons can be increased by passing the photon beam through a two-stage collimation system. The energy of each photon in the energy range of interest can be determined by measuring the momentum of the recoil (``tagged'') electron in the tagger broad-band hodoscope or the microscope detectors. The photon flux and the polarization fraction can be measured using the pair spectrometer (and the triplet production polarimeter). The main Hall D photon beamline components will be presented.
- 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:
- 1989787
- Report Number(s):
- JLAB-PHY-14-2073; DOE/OR/23177-6703
- Country of Publication:
- United States
- Language:
- English
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