David J Fegan 1997 J. Phys. G: Nucl. Part. Phys. 23 1013 doi:10.1088/0954-3899/23/9/004
/hadron separation at TeV energies
REVIEW ARTICLE
David J Fegan
Show affiliationsTOPICAL REVIEW
During the past decade, significant advances have been made in TeV 
-ray astronomy arising mainly from development of the imaging atmospheric Cerenkov technique (IACT). This topical review summarizes instrumental and analytical advances which have made possible the rejection of the background hadronic showers with an efficiency close to 100%, while simultaneously rejecting no more than 50% of genuine -ray showers. Application of large optical reflectors to the detection and registration of shower images is described, together with image formation and mapping of Cerenkov photons using high-resolution imaging focal plane detectors. An overview is presented of how images are processed and parametrized, prior to /hadron separation. In the context of rejection strategies, the deleterious muon background is also discussed. The gradual evolution of a number of dedicated /hadron separation strategies is summarized from the standpoint of both single and multiple telescope operation. The review concludes with an overview of astrophysical accomplishments to date, based on successful application of proven /hadron separation strategies. Potential future trends are discussed.
- PACS
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96.50.sd Extensive air showers
95.55.Vj Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors
- Subjects
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Accelerators, beams and electromagnetism
Instrumentation and measurement
- Dates
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Issue 9 (September 1997)
Received 21 March 1997, in final form 15 May 1997
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/hadron separation at TeV energies
David J Fegan 1997 J. Phys. G: Nucl. Part. Phys. 23 1013
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