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
fDate :
8/1/1999 12:00:00 AM
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; circuit noise; cosmic ray apparatus; nuclear electronics; photomultipliers; preamplifiers; trigger circuits; 15 GeV; MAGIC imaging Cherenkov telescope; RF low noise bipolar transistors; camera photosensors; energy threshold; fast low noise frontend preamplifier performance; fast trigger settings; frontend circuit; ground based air imaging Cherenkov telescope; high energy cosmic gamma rays; hybrid photomultiplier; noise performance; transimpedance preamplifier; Bipolar transistors; Cameras; Circuit noise; Energy resolution; Gamma rays; Optical imaging; Photomultipliers; Preamplifiers; Radio frequency; Telescopes;
Journal_Title :
Nuclear Science, IEEE Transactions on
