Abstract
The BESS-Polar balloon payload had its first flight on December 13th-21st, 2004 (UTC) from McMurdo Station, Antarctica. The flight duration was over eight days and more than 9 × 108 cosmic-ray events were recorded. An overview of the BESS-Polar flight, the status of the antiproton analysis, and a discussion of the low-power readout electronics and data acquisition system can be found elsewhere in these proceedings. In this paper we discuss the design, testing, and flight performance of the BESS-Polar Cherenkov counter, which operated in ambient conditions outside a pressure vessel. The silica-aerogel Cherenkov radiator had a nominal index-of-refraction, n = 1.02 , yielding an lower limit for the most likely photoelectron (PE) number of 7 in the center of the counter and 9 near the photomultiplier tubes.
Original language | English |
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Pages | 69-72 |
Number of pages | 4 |
Publication status | Published - 2005 |
Externally published | Yes |
Event | 29th International Cosmic Ray Conference, ICRC 2005 - Pune, India Duration: Aug 3 2005 → Aug 10 2005 |
Other
Other | 29th International Cosmic Ray Conference, ICRC 2005 |
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Country/Territory | India |
City | Pune |
Period | 8/3/05 → 8/10/05 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics