Title :
Performance of a fast low noise front-end preamplifier for the MAGIC imaging Cherenkov telescope
Author :
Blanch, O. ; Blanchot, G. ; Bosman, M. ; Cavalli-Sforza, M. ; Dosil, M. ; Fernandez, E. ; Llopart, X. ; Lorenz, E. ; Martinez, M. ; Mirzoyan, R. ; Ostankov, A. ; Petry, D. ; Pimpl, W.
Author_Institution :
IFAE, Univ. Autonoma de Barcelona, Spain
Abstract :
The observation of high energy cosmic gamma rays with an energy threshold of 15 GeV using the proposed MAGIC ground based air imaging Cherenkov telescope requires the development of new low noise fast preamplifiers for the camera photosensors. The speed and noise performance of a transimpedance preamplifier that resolves the multi photoelectron peaks from a hybrid photomultiplier with a peaking time below 7 ns is presented. The new front-end circuit is designed with RF low noise bipolar transistors and provides fast output pulses that allow for fast trigger settings
Keywords :
Cherenkov counters; bipolar transistors; cosmic ray apparatus; nuclear electronics; preamplifiers; 15 GeV; 7 ns; MAGIC; air imaging Cherenkov telescope; camera photosensors; fast trigger settings; front-end circuit; high energy cosmic gamma rays; low noise fast preamplifiers; low noise front-end preamplifier; peaking time; transimpedance preamplifier; Bipolar transistors; Cameras; Circuit noise; Energy resolution; Gamma rays; Optical imaging; Photomultipliers; Preamplifiers; Radio frequency; Telescopes;
Conference_Titel :
Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-5021-9
DOI :
10.1109/NSSMIC.1998.774800
