The CAST time projection chamber (CROSBI ID 134462)
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Podaci o odgovornosti
Autiero, D. ; Beltrán, B. ; Carmona, J.M. ; Cebrián, S. ; Chesi, E. ; Davenport, M. ; Delattre, M. ; Di Lella, L. ; Formenti, F. ; Irastorza, I.G. ; Gomez, H. ; Hasinoff, M. ; Lakić, Biljana ; Luzon, G. ; Morales, J. ; Musa, L. ; Ortiz, A. Placci, A. ; Rodrigurez, A. ; Ruz, J. ; Villar, J.A. ; Zioutas, K.
engleski
The CAST time projection chamber
One of the three x-ray detectors of the CERNAxion Solar Telescope (CAST) experiment searching for solar axions is a time projection chamber (TPC) with a multi-wire proportional counter (MWPC) as a readout structure. Its design has been optimized to provide high sensitivity to the detection of the low intensity x-ray signal expected in the CAST experiment. A low hardware threshold of 0.8 keV is set to a safe level during normal data taking periods, and the overall efficiency for the detection of photons coming from conversion of solar axions is 62%. Shielding has been installed around the detector, lowering the background level to 4.10 × 10− 5 counts cm− 2 s− 1 keV− 1 between 1 and 10 keV. During phase I of the CAST experiment the TPC has provided robust and stable operation, thus contributing with a competitive result to the overall CAST limit on axion– photon
CERN Axion Solar Telescope; time projection chamber
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