CALorimetric Electron Telescope (CALET) - 10.31.18

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
CALorimetric Electron Telescope (CALET) is an astrophysics mission that searches for signatures of dark matter and provides the highest energy direct measurements of the cosmic ray electron spectrum in order to observe discrete sources of high energy particle acceleration in our local region of the Galaxy.
Science Results for Everyone
Information Pending

The following content was provided by Shorji Torii, Ph.D., and is maintained in a database by the ISS Program Science Office.
Information provided courtesy of the Japan Aerospace and Exploration Agency (JAXA).
Experiment Details

OpNom: CALET

Principal Investigator(s)
Shorji Torii, Ph.D., Waseda University, Tokyo, Japan

Co-Investigator(s)/Collaborator(s)
John Wefel
Pier S. Marrocchesi, University of Siena and INFN, Siena, Italy

Developer(s)
Tsukuba Space Center, Tsukuba, Ibaraki, Japan

Sponsoring Space Agency
Japan Aerospace Exploration Agency (JAXA)

Sponsoring Organization
Japan Aerospace Exploration Agency

Research Benefits
Information Pending

ISS Expedition Duration
March 2015 - March 2016; March 2016 - April 2019; -

Expeditions Assigned
43/44,45/46,47/48,49/50,51/52,53/54,55/56,57/58,59/60

Previous Missions
Information Pending

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Experiment Description

Research Overview

  • CALET aims to investigate high energy cosmic rays, extending the observations carried out by previous balloon experiments and space missions so far. The instrument measures high energy particles with superior energy resolution and excellent particle identification capability. 
  • CALET addresses many of the outstanding questions of high energy astrophysics, such as the origin of cosmic rays, the mechanism of cosmic-ray acceleration and galactic propagation, the existence of dark matter and nearby cosmic-ray sources.
  • CALET provides an important window on the high energy phenomena taking place in the galaxy by studying cosmic rays.  Discovering the first experimental evidence of the presence of nearby cosmic-ray sources is one of the main goals of CALET.

Description
Information Pending

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Applications

Space Applications
CALET addresses many outstanding high-energy astrophysics questions such as the origin of cosmic rays, how cosmic ray accelerate and travel across the galaxy; the existence of dark matter and nearby cosmic-ray sources.  An inventory of the highest-energy radiation encountered in space also helps in characterizing the radiation environment encountered by humans and space electronics, and the risks they face.

Earth Applications
CALET expects to provide an important window on the highest-energy phenomena in the galaxy by studying cosmic rays, and seeks the first experimental evidence of the presence of nearby cosmic-ray sources. CALET's long exposure in space may also yield evidence of rare interactions between matter and dark matter.

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Operations

Operational Requirements and Protocols
Information Pending

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Decadal Survey Recommendations

Information Pending

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Results/More Information

Information Pending

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Results Publications

    Adriani O, Akaike Y, Asano K, Asaoka Y, Bagliesi MG, Bigongiari G, Binns WR, Bonechi S, CALET Collaboration.  CALET upper limits on X-Ray and gamma-ray counterparts of GW151226. The Astrophysical Journal Letters. 2016 September 21; 829(1): L20. DOI: 10.3847/2041-8205/829/1/L20.

    Asaoka Y, Ozawa S, Torii S.  On-orbit Operations and Offline Data Processing of CALET onboard the ISS. Astroparticle Physics    . 2018 February 27; 100: 29-37. DOI: 10.1016/j.astropartphys.2018.02.010.

    Adriani O, Akaike Y.  Energy Spectrum of Cosmic-Ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station. Physical Review Letters. 2017 November 3; 119(18). DOI: 10.1103/PhysRevLett.119.181101.

    Adriani O, Akaike Y, Asano K, Asaoka Y, Bagliesi MG, Berti E, Bigongiari G, Binns WR, CALET Collaboration.  Search for GeV gamma-ray counterparts of gravitational wave events by CALET. The Astrophysical Journal. 2018 August 20; 863(2): 160. DOI: 10.3847/1538-4357/aad18f.

    Kataoka R, Asaoka Y, Torii S, Terasawa T, Ozawa S, Tamura T, Shimizu Y, Akaike Y, Mori M.  Relativistic electron precipitation at International Space Station: Space weather monitoring by Calorimetric Electron Telescope. Geophysical Research Letters. 2016 May 16; 43(9): 4119-4125. DOI: 10.1002/2016GL068930.

    Asaoka Y, Akaike Y, Komiya Y, Miyata R, Torii S, Adriani O, Asano K, CALET Collaboration.  Energy calibration of CALET onboard the International Space Station. Astroparticle Physics    . 2017 May 1; 91: 1-10. DOI: 10.1016/j.astropartphys.2017.03.002.

    Cannady N, Asaoka Y, Satoh F, Tanaka M, Torii S, Cherry ML, Mori M, Adriani O, CALET Collaboration.  Characteristics and performance of the CALorimetric Electron Telescope (CALET) calorimeter for gamma-ray observations. The Astrophysical Journal Supplement Series. 2018 September 5; 238(1): 5. DOI: 10.3847/1538-4365/aad6a3.

    Adriani O, Akaike Y, Asano K, Asaoka Y, Bagliesi MG, Berti E, Bigongiari G, Binns WR, CALET Collaboration.  Extended measurement of the cosmic-ray electron and positron spectrum from 11 GeV to 4.8 TeV with the calorimetric electron telescope on the International Space Station. Physical Review Letters. 2018 June 29; 120(26): 261102. DOI: 10.1103/PhysRevLett.120.261102. PMID: 30004739.

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Ground Based Results Publications

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ISS Patents

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Related Publications

    Bhattacharyya S, Motz HM, Torii S, Asaoka Y.  Decaying fermionic dark matter search with CALET. Journal of Cosmology and Astroparticle Physics. 2017 August 9; 2017(08): 012. DOI: 10.1088/1475-7516/2017/08/012.

    Motz HM, Asaoka Y, Torii S, Bhattacharyya S.  CALET's sensitivity to Dark Matter annihilation in the galactic halo. Journal of Cosmology and Astroparticle Physics. 2015 December 23; 2015(12): 047. DOI: 10.1088/1475-7516/2015/12/047.

    Niita T, Torii S, Akaike Y, Asaoka Y, Kasahara K, Ozawa S, Tamura T.  Energy calibration of Calorimetric Electron Telescope (CALET) in space. Advances in Space Research. 2015 June 1; 55(11): 2500-2508. DOI: 10.1016/j.asr.2015.03.006.

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Related Websites

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Imagery

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CALET location.


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CALET PL overview.


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CALET/CAL instrument.


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NASA Image: ISS055E006395 - Japanese Experiment Module (JEM) Pressurized Module (JPM) and Japanese Experiment Module - Exposed Facility (JEM-EF) with the Earth in the background. Taken by Expedition 55 crew.

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