Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC

M. H. Kim; S. Y. Ryu; J. K. Ahn; W. S. Jung; S. H. Kim; J. W. Lee; T. Ohta; J. B. Park; M. Tabata; M. Yosoi

doi:10.1016/j.nima.2019.01.059

Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC

M. H. Kim, S. Y. Ryu, J. K. Ahn, W. S. Jung, S. H. Kim, J. W. Lee, T. Ohta, J. B. Park, M. Tabata, M. Yosoi

Department of Physics

Research output: Contribution to journal › Article › peer-review

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 × 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.

Original language	English
Pages (from-to)	38-44
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	923
DOIs	https://doi.org/10.1016/j.nima.2019.01.059
Publication status	Published - 2019 Apr 11

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

Cherenkov detector
E42
LEPS
Parabolic reflector
Silica aerogel

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2019.01.059

Cite this

Kim, M. H., Ryu, S. Y., Ahn, J. K., Jung, W. S., Kim, S. H., Lee, J. W., Ohta, T., Park, J. B., Tabata, M., & Yosoi, M. (2019). Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 923, 38-44. https://doi.org/10.1016/j.nima.2019.01.059

Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC. / Kim, M. H.; Ryu, S. Y.; Ahn, J. K. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 923, 11.04.2019, p. 38-44.

Research output: Contribution to journal › Article › peer-review

Kim, MH, Ryu, SY, Ahn, JK, Jung, WS, Kim, SH, Lee, JW, Ohta, T, Park, JB, Tabata, M & Yosoi, M 2019, 'Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 923, pp. 38-44. https://doi.org/10.1016/j.nima.2019.01.059

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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 × 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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doi = "10.1016/j.nima.2019.01.059",

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AU - Kim, M. H.

AU - Ryu, S. Y.

AU - Ahn, J. K.

AU - Jung, W. S.

AU - Kim, S. H.

AU - Lee, J. W.

AU - Ohta, T.

AU - Park, J. B.

AU - Tabata, M.

AU - Yosoi, M.

PY - 2019/4/11

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N2 - 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 × 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.

AB - 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 × 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.

KW - Cherenkov detector

KW - E42

KW - LEPS

KW - Parabolic reflector

KW - Silica aerogel

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Development of a threshold aerogel Cherenkov detector for K∕π separation in the H-dibaryon search at J-PARC

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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