A Large acceptance spectrometer TAGX for photoreaction studies at the 1.3-GeV Tokyo electron synchrotron
Dec, 199563 pages
Published in:
- Nucl.Instrum.Meth.A 376 (1996) 335-355
Report number:
- INS-1129
Experiments:
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Abstract: (Elsevier)
The study of photoreactions on light nuclei with the TAGX spectrometer started in 1987 using the 20% duty-cycle tagged-photon beam at the 1.3-GeV Tokyo electron synchrotron. TAGX is comprised of a π-sr magnetic spectrometer for detection of charged pions, kaons, and protons and a 0.85-sr time-of-flight spectrometer for neutrons. It has served in the past eight years as a unique medium-energy-resolution multi-particle spectrometer for coincidence experiments to detect such final states as pn, pp, π + π − , ppn, pp − , and pn π + π − : some of which were kinematically-complete measurements of three-particle and four-particle final states. Details of the detector components, their performance, data acquisition, event reconstruction analyses, and detector-acceptance calculations are described together with the results of experience acquired in those experiments. A TAGX improvement in the momentum resolution required for charged particle measurements in the 1-GeV photon energy region is also reported.- photon nucleus: nuclear reaction
- photon: tagged beam
- tagged beam: photon
- magnetic spectrometer: acceptance
- tracks
- fast logic: time-of-flight
- momentum resolution
- performance
- Tokyo ES
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