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Japanese-American Cooperative Emulsion Experiment /JACEE/The instrumentation and results of long duration balloon flights carried out jointly by U.S. and Japan researchers to examine high energy cosmic rays are reported. Basic detector geometries are 2.5 sq m sr with operation at altitudes with 3-4 g/sq cm pressure, with observations thus far of over 100 hr. Energies from 2-100 TeV are recorded for nucleus-nucleus and hadron-nucleus interactions, and searches are made for new particle or interactions. The detector is an emulsion chamber which comprises doubly-coated nuclear emulsions on 800 micron thick methacryl substrates, X-ray films, etchable detectors, low density spacers, and lead sheets. Segmentation of the instrument into a primary charge module, a target section, a spacer section, and a lead-emulsion calorimeter allows accurate charge measurement for primary nuclei, reliable energy resolution, and a large geometrical factor for collecting high energy events. A primary Ca nucleus of 300 TeV has been observed.
Document ID
19820039312
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Huggett, R. W.
(Louisiana State Univ. Baton Rouge, LA, United States)
Hunter, S. D.
(Louisiana State Univ. Baton Rouge, LA, United States)
Jones, W. V.
(Louisiana State Univ. Baton Rouge, LA, United States)
Takahashi, Y.
(Louisiana State University Baton Rouge, LA, United States)
Ogata, T.
(Louisiana State Univ. Baton Rouge, LA, United States)
Saito, T.
(Tokyo, University Tokyo, Japan)
Holynski, R.
(Louisiana State Univ. Baton Rouge, LA, United States)
Jurak, A.
(Louisiana State Univ. Baton Rouge, LA, United States)
Wolter, W.
(Instytut Fizyki Jadrowej Krakow, Poland)
Parnell, T. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: International Cosmic Ray Conference
Location: Paris
Country: France
Start Date: July 13, 1981
End Date: July 25, 1981
Accession Number
82A22847
Distribution Limits
Public
Copyright
Other

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