The University of Durham Southern Hemisphere VHE gamma ray telescope |
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Authors: | K T Brazier A Carramiñana P M Chadwick T R Currell N A Dipper E W Lincoln V G Mannings T J L McComb K J Orford S M Rayner K E Turver |
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Institution: | (1) Department of Physics, University of Durham, DH1 3LE Durham, UK |
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Abstract: | The design of very high energy (VHE) gamma ray telescopes is discussed and it is shown that a triple-mirror telescope operating in threefold fast coincidence provides an effective instrument. The design, construction and operation of a large VHE gamma ray telescope with an energy threshold of 300 GeV (at the zenith) and incorporating several novel features is described. The use of a coincidence guard ring technique is shown to result in the rejection of about 50% of the off-source (proton) events which form a high background and limit the sensitivity of such telescopes. |
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