| Paper | Title | Page |
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MOPA29 |
A Fast, Compact Particle Detector for Tuning Radioactive Beams at ATLAS | |
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Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract number DE-AC02-06CH11357. At the ATLAS we are developing a fast, compact particle detector to aid the tuning of low intensity beam constituents with relatively high intensity (>100x) contaminants. These conditions are regularly encountered during radioactive ion beam (RIB) production via the in-flight method, or when charge breeding fission fragments from CARIBU. Presently silicon barrier detectors (SBD) are used for mass identification. However, the total acceptable SBD rate is limited to ~1000 pps, so the signal rate from any minority constituents 100x less intense is typically much too slow to enable meaningful accelerator optimization. In addition, the performance of SBDs deteriorates after a relatively low integrated flux. The in-flight method of RIB production produce beams with energies 5-15 MeV/u and masses less than 35 AMU, while beams from CARIBU are typically 80 < A < 160 and accelerated to energies of 4-10 MeV/u. Our goal is to build a radiation hard detector capable of Z and A identification with ~5% energy resolution at a total rate of 105 pps over these energy and mass ranges. The conceptual design of the detector and simulated performance results will be presented. |
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