Milagro: A TeV observatory for gamma-ray bursts

Type Conference Paper
Names B. L. Dingus, R. Atkins, W. Benbow, D. Berley, M. L. Chen, D. G. Coyne, R. W. Ellsworth, D. Evans, A. Falcone, L. Fleysher, R. Fleysher, G. Gisler, J. A. Goodman, T. J. Haines, C. M. Hoffman, S. Hugenberger, L. A. Kelley, I. Leonor, M. McConnell, J.
Proceedings Title AIP Conference Proceedings
Conference Name GAMMA-RAY BURSTS: 5th Huntsville Symposium
Volume 526
Pages 751-755
Date September 1, 2000
DOI 10.1063/1.1361635
ISBN 0094-243X
Short Title Milagro
Library Catalog
Abstract Observation of prompt TeV γ-rays from GRBs requires a new type of detector to overcome the low duty factor and small field of view of current TeV observatories. Milagro is such a new type of very high energy (> a few 100 GeV) gamma-ray observatory, which has a large field of view of >1 steradian and 24 hours/day operation. Milagrito, a prototype for Milagro, was operated from February 1997 to May 1998. During the summer of 1998, Milagrito was dismantled and Milagro was built. Both detectors use a 80 m×60 m×8 m pond of water in which a 3 m×3 m grid of photomultiplier tubes detects the Cherenkov light produced in the water by the relativistic particles in extensive air showers. Milagrito was smaller and had only one layer of photomultipliers, but allowed the technique to be tested. Milagrito observations of the Moon's shadow and Mrk 501 are consistent with the Monte Carlo prediction of the telescope's parameters, such as effective area and angular resolution. Milagro will have improved flux sensitivity over Milagrito due to larger effective area, better angular resolution and cosmic-ray background rejection. .
Tags Jets and bursts, Spectroscopy and spectrophotometry, galactic winds and fountains, gamma-ray
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