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.
@article{arxiv.nucl-ex/0205014,
title = {A Readout System for the STAR Time Projection Chamber},
author = {M. Anderson and R. Bossingham and F. Bieser and D. Cebra and E. L. Hjort and S. R. Klein and C. Q. Vu and H. Wieman},
journal= {arXiv preprint arXiv:nucl-ex/0205014},
year = {2008}
}
Comments
22 pages + 8 separate figures; 2 figures are .jpg photos to appear in Nuclear Instruments and Methods