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https://hdl.handle.net/10316/4565
Title: | A study of breakdown limits in microstrip gas counters with preamplification structures | Authors: | Fonte, P. Peskov, V. Ramsey, B. D. |
Issue Date: | 1998 | Citation: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 416:1 (1998) 23-31 | Abstract: | We have studied the charge and breakdown limits of Microstrip Gas Counters (MSGC's) with two different preamplification structures: the Gas Electron Multiplier (GEM) and the Parallel-Plate Avalanche Counter (PPAC). It was found that in both cases the breakdown limit was increased by 1-2 orders of magnitude compared to the bare MSGC and that this was due to the spreading of the primary electron cloud during pre-amplification. This spreading reduces the charge density in the final MSGC avalanche, permitting much higher total gains before streamers form. The real practical gain limitations in these two-stage detectors arose not from sparking, but from a loss of proportionality due to space charge effects. | URI: | https://hdl.handle.net/10316/4565 | DOI: | 10.1016/S0168-9002(98)00649-4 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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