A readout system for the STAR time projection chamber

M. Anderson,F. Bieser,R. Bossingham, D. Cebra,E.L. Hjort,S.R. Klein,S. Kleinfelder,C.Q. Vu,H. Wieman

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2003）

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摘要

We describe the readout electronics for the STAR Time Projection Chamber. The system is made up of 136,608 channels of waveform digitizer, each sampling 512 time samples at 6–12 Mega-samples per second. The noise level is about 1000 electrons, and the dynamic range is 800:1, allowing for good energy loss (dE/dx) measurement for particles with energy losses up to 40 times minimum ionizing. The system is functioning well, with more than 99% of the channels working within specifications.

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