New approach to identify negative and positive pions with a scintillator range telescope in the 15-90 MeV pion energy interval
A scintillator range telescope was designed to detect pions in a very intense background of charged particles (ca 5000 ps) and to identify pion charge in the 15-90 MeV range. Such a telescope has a solid angle of 20 msr and allows the simultaneous detection of a wide pion momentum range on the order of 70 MeV/c to 200 MeV/c for both pions plus and pions minus. Several angles can be simultaneously studied with three telescopes. The pion energy resolution of ca 3 MeV is less, however, than the corresponding 0.5 MeV of a magnetic spectrometer. The accuracy of the R ratio depends on the accuracy of the pion plus identification method. This identification is based on the detection of particles generated by the pion plus-to-muon-to-tau decay sequence with a mean life of 26 ns. One method relies on the fast recovery time of the associated electronics by using an appropriate delayed coincidence between poin plus and muon plus signals. The low efficiency of such a method does not permit the determination of the pion minus contribution. In order to improve the charge identification of pions, the authors use a new approach in their experiments, based on the measurement of the charge of the particle pulses within different time gates. This paper presents the principles of this approach. Three gates--a prompt, a normal, and a delayed gate-and their respective charge analyzers are used in the discussion.
- Research Organization:
- Departement de Physique Nucleaire, Metrologie et Physique Neutroniques Fondomentales, CEN Saclay, 91191 Gif-sur-Yvette Cedex
- OSTI ID:
- 6853411
- Report Number(s):
- CONF-831015-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Vol. 31:1; Conference: Nuclear science symposium, San Francisco, CA, USA, 19 Oct 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PION DETECTION
SCINTILLATION COUNTERS
TELESCOPE COUNTERS
DESIGN
ANTICOINCIDENCE
CHARGE DISTRIBUTION
DECAY
ENERGY RESOLUTION
GATING CIRCUITS
MEV RANGE 10-100
OPERATION
PIONS MINUS
PIONS PLUS
PULSE ANALYZERS
TIMING PROPERTIES
BOSONS
CHARGED PARTICLE DETECTION
DETECTION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
ENERGY RANGE
EQUIPMENT
HADRONS
MEASURING INSTRUMENTS
MESONS
MEV RANGE
PIONS
PSEUDOSCALAR MESONS
RADIATION DETECTION
RADIATION DETECTORS
RESOLUTION
440104* - Radiation Instrumentation- High Energy Physics Instrumentation