Development of a threshold aerogel Cherenkov detector for K/pi separation in the H-dibaryon search at J-PARC
- Authors
- Kim, M. H.; Ryu, S. Y.; Ahn, J. K.; Jung, W. S.; Kim, S. H.; Kim, S. H.; Lee, J. W.; Ohta, T.; Park, J. B.; Tabata, M.; Yosoi, M.
- Issue Date
- 11-4월-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Cherenkov detector; Parabolic reflector; Silica aerogel; E42; LEPS
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.923, pp.38 - 44
- Indexed
- SCIE
SCOPUS
- Journal Title
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
- Volume
- 923
- Start Page
- 38
- End Page
- 44
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/66023
- DOI
- 10.1016/j.nima.2019.01.059
- ISSN
- 0168-9002
- Abstract
- We have developed a new threshold Cherenkov detector for online triggering in the H-dibaryon search experiment at the K1.8 beam line at J-PARC. Silica aerogel radiators with a refractive index of n = 1.04 will cover an effective area of 550 x 220 mm(2) . The Cherenkov detector will be placed in a high magnetic field between two spectrometer magnets. Three prototypes and a real-size mockup module have been tested using pions and protons from photoproduction at SPring-8. For momentum ranging from 1.0 to 1.1 GeV /c, a suppression factor of 10(3) could be achieved for pions, with a factor of 10 (-2) for proton misidentification.
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