Detection of Cherenkov Light from Low Energy {gamma}-Showers by Extra Large Diameter IACT
- Yerevan Physics Institute, Alikhanian Br. 2, Yerevan 375036 (Armenia)
The time spread of the rays collected by a large diameter imaging atmospheric Cherenkov telescope (d{approx}20-30 m) is investigated. We compare the influence of the geometry of the spherical and parabolic reflectors on the shape and duration of collected Cherenkov light. It is shown that the design-induced additional widening of the collected Cherenkov light pulse is essential for the spherical reflector of Davies-Cotton type, and is negligibly small for the parabolic reflector. At the detection of 10 GeV {gamma}-showers, the pulse width on the spherical telescope's focal plane may reach 15-20 ns instead of 5-8 ns inherent to the incident light pulse itself. In the case with a parabolic telescope the pulse widths of the light incident on the telescope disk and collected onto the camera are almost identical.
- OSTI ID:
- 20630564
- Journal Information:
- AIP Conference Proceedings, Vol. 745, Issue 1; Conference: 2. international symposium on high energy gamma-ray astronomy, Heidelberg (Germany), 26-30 Jul 2004; Other Information: DOI: 10.1063/1.1878501; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CAMERAS
CHERENKOV COUNTERS
COMPARATIVE EVALUATIONS
COSMIC GAMMA SOURCES
COSMIC PHOTONS
COSMIC RAY DETECTION
COSMIC SHOWERS
DESIGN
GAMMA ASTRONOMY
GAMMA DETECTION
GEOMETRY
GEV RANGE
PARABOLIC REFLECTORS
PARTICLE IDENTIFICATION
PULSES
SPHERICAL CONFIGURATION
TELESCOPE COUNTERS