Antiproton identification below threshold with the AMS-02 RICH detector

Zi-Yuan Li; Carlos Jose Delgado Mendez; Francesca Giovacchini; Sadakazu Haino; Julia Hoffman

doi:10.1088/1674-1137/41/5/056001

Chinese Physics C> 2017, Vol. 41> Issue(5) : 056001 DOI: 10.1088/1674-1137/41/5/056001

Antiproton identification below threshold with the AMS-02 RICH detector

1.
School of Physics, Sun Yat-Sen University, Guangdong 510275, China
2.
Institute of Physics, Academia Sinica, Taipei 11529, China
3.
Centro de Investigaciones Energeticas, Mediambientales y Tecnologicas (CIEMAT), Madrid E-28040, Spain
4.
Institute of Physics, Academia Sinica, Taipei 11529, China
5.
Physics and Astronomy Department, University of Hawaii, Hawaii 96822, USA

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Abstract：
The Alpha Magnetic Spectrometer (AMS-02), which is installed on the International Space Station (ISS), has been collecting data successfully since May 2011. The main goals of AMS-02 are the search for cosmic anti-matter, dark matter and the precise measurement of the relative abundance of elements and isotopes in galactic cosmic rays. In order to identify particle properties, AMS-02 includes several specialized sub-detectors. Among these, the AMS-02 Ring Imaging Cherenkov detector (RICH) is designed to provide a very precise measurement of the velocity and electric charge of particles. We describe a method to reject the dominant electron background in antiproton identification with the use of the AMS-02 RICH detector as a veto for rigidities below 3 GV. A ray tracing integration method is used to maximize the statistics of p with the lowest possible e^- background, providing 4 times rejection power gain for e^- background with respect to only 3% of p signal efficiency loss. By using the collected cosmic-ray data, e^- contamination can be well suppressed within 3% with β ≈ 1, while keeping 76% efficiency for p below the threshold.
- AMS-02 ,
- cosmic ray antiproton ,
- RICH detector ,
- aerogel radiator ,
- Cherenkov radiation ,
- antiproton identification ,
- ray tracing integration

References

[1]	A. Kounine, International Journal of Modern Physics E, 21: 123005 (2012)
[2]	B. Alpat et al, Nucl. Instrum. Methods A, 613: 207 (2010)
[3]	K. Luebelsmeyer et al, Nucl. Instrum. Methods A, 654: 639 (2011)
[4]	Th. Kirn, Nucl. Instrum. Methods A, 706C: 43 (2013); Ph. Doetinchem et al, Nucl. Instrum. Methods A, 558: 526 (2006); F.Hauler et al, IEEE Trans. Nucl. Sci, 51: 1365 (2004)
[5]	A. Basili et al, Nucl. Instrum. Methods A, 707: 99 (2013); V. Bindi et al, Nucl. Instrum. Methods A, 623: 968 (2010)
[6]	Ph. Doetinchem et al, Nucl. Phys. B, 197: 15 (2009)
[7]	P. Aguayo et al, Nucl. Instrum. Methods A, 560: 291 (2006); B. Baret et al, Nucl. Instrum. Methods A, 525: 126 (2004); J. Casaus, Nucl. Phys. B (Proc. Suppl.), 113: 147 (2002)
[8]	C. Adloff et al, Nucl. Instrum. Methods A, 714: 147 (2013)
[9]	M. Aguilar-Benitez et al, Nucl. Instrum. Methods A, 614: 237-249 (2010)
[10]	L. Arruda et al, Nuclear Physics B Proceedings Supplements, 172: 32-35 (2007)
[11]	D. Casadei, Nuclear Physics B Proceedings Supplements, 125: 303-307 (2003)
[12]	J. Seguinot and T. Ypsilantis, Nucl. Instrum. Methods A, 343: 1 (1994)
[13]	M. Aguilar et al, AMS Collaboration, Phys. Rev. Lett. 117: 091103 (2016)
[14]	Z. Weng, Particle Identification Using Transition Radiation Detector and Precision Measurement of Cosmic Ray Positron Fraction with the AMS-02 Experiment, Ph.D Thesis (Guangdong: School of Physics, Sun Yat-Sen University, 2013)
[15]	F. Cadoux et al, Nuclear Physics B Proceedings Supplements, 113: 159-165 (2002)
[16]	Z. Li et al, Chinese Physics C, 37(02): 026201 (2013)
[17]	Z. Li et al, Chinese Physics C, 38(05): 056203 (2014)
[18]	F. Giovacchini, et al, AMS Collaboration, Nucl. Instrum. Methods A, 766: 57-60 (2014)
[19]	S. Agostinelli et al, Nucl. Instrum. Methods A, 506: 250 (2003)
[20]	J. Allison et al, IEEE Trans. Nucl. Sci, 53: 270 (2006)

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[11]	WANG Wen-Xin , ZHANG Yi , WANG Ji-Jin , HU Bi-Tao . Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background. Chinese Physics C, 2009, 33(2): 110-113. doi: 10.1088/1674-1137/33/2/007
[12]	CHEN Xi-Hui , XIE Xiao-Xi , LI Xiao-Nan , GAO Cui-Shan , ZHANG Yin-Hong , NIE Zhen-Dong , MIN Jian , XIE Yi-GANG . Design and implementation of the detector control system for the BESⅢ drift chamber cosmic ray test. Chinese Physics C, 2008, 32(8): 649-652. doi: 10.1088/1674-1137/32/8/012
[13]	YAN Jie , SHAO Ming , LI Cheng . A new type of Time-Of-Propagation (TOP) Cherenkov detector for particle identification. Chinese Physics C, 2008, 32(S2): 225-228.
[14]	LI Xin-Qiao , CHEN Guo-Ming , LI Zu-Hao , CHEN Gang , YANG Min , YANG Zhao-Yu , WANG Xiao-Bin , ZHANG Shao-He , TAO Jun-Quan , LV Yu-Sheng , CHEN He-Sheng . 3D-Reconstruction of AMS02 Electromagnetic Calorimeter. Chinese Physics C, 2006, 30(10): 996-1000.
[15]	Cao Zhen , Ding Linkai . Generator of QCD Parton Model for the Cosmic Ray Ultrahigh Energy Interaction. Chinese Physics C, 1994, 18(S4): 321-332.
[16]	Cheng Zitao , Qian Qing , Fu Yunchang , Chen Xuejun . Study of Antihydrogen-Atom Formation in Antiproton-Positronium Collisions. Chinese Physics C, 1993, 17(S2): 171-178.
[17]	Li Yangguo . Antiproton-Nucleus Elastic Scatting at Intermediate Energies. Chinese Physics C, 1993, 17(S2): 199-205.
[18]	Lu Suiling , Ren Jingru , Su Shi , Wang Chengrui , He Mao . Variation of the Intensity of High Energy Cosmic Ray Hadrons with Altitude. Chinese Physics C, 1992, 16(S2): 123-125.
[19]	Ren Guoxiao , Zhou Yinzao , Huang Rongqing . Dependence of 丨nteraction Cross Sections of High Energy Cosmic Ray Iron Nuclei (E≥3.6A GeV) on Atomic Weight of Targets. Chinese Physics C, 1988, 12(S1): 1-8.
[20]	Ding Lin-kai , Zhu Qing-qi . MONTE-CARLO SIMULATION OF COSMIC RAY ANTIPROTON INTENSITY. Chinese Physics C, 1980, 4(6): 735-740.

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Zi-Yuan Li, Carlos Jose Delgado Mendez, Francesca Giovacchini, Sadakazu Haino and Julia Hoffman. Antiproton identification below threshold with the AMS-02 RICH detector[J]. Chinese Physics C, 2017, 41(5): 056001. doi: 10.1088/1674-1137/41/5/056001

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Received: 2016-11-08
Revised: 2016-12-29

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Supported by China Scholarship Council (CSC) under Grant No.201306380027.

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沈阳化工大学材料科学与工程学院沈阳 110142

Antiproton identification below threshold with the AMS-02 RICH detector

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Antiproton identification below threshold with the AMS-02 RICH detector

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