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A Readout System for the STAR Time Projection Chamber

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

nucl-exarXiv:nucl-ex/0205014

Abstract

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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