10th International Conference on Kaon Physics | |
The Kaon identification system of the NA62 experiment | |
Maurice, E.^1 | |
University of Liverpool, United Kingdom^1 | |
关键词: Branching ratio; Cherenkov Detectors; Cherenkov radiator; Electronics read outs; Kaon identification; Photon detector; Tagging systems; Time information; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/800/1/012048/pdf DOI : 10.1088/1742-6596/800/1/012048 |
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来源: IOP | |
【 摘 要 】
The main goal of the NA62 experiment at the CERN SPS is to measure the branching ratio of the ultra-rare K+→π+v v decay with 10% accuracy. This can be achieved by detecting about 100 Standard Model events with 10% background in 2 - 3 years of data taking. NA62 is exposed to a 750MHz high-energy unseparated charged hadron beam, with a 6% kaons component, and uses kaon decay-in-ight technique. Precise timing matching of the incident kaon and of the downstream charged track is essential to reject accidental coincidences when working in such a high rate environment. This is achieved by the kaon tagging system KTAG, which identifies kaons with an eficiency higher than 95% and provides precise time information with a resolution better than 100 ps. KTAG re-uses the Cherenkov radiator and optics of a CEDAR, a ring-focusing Cherenkov detector designed for MHz beam intensity in the 1970s. To reach the required performance, KTAG is equipped with new photon detectors, electronics readout, mechanics, cooling and safety systems.
【 预 览 】
Files | Size | Format | View |
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The Kaon identification system of the NA62 experiment | 688KB | download |