In situ calibration of neutron detectors on TEXTOR

F. Hoenen, H. Euringer, H. S. Bosch, A. V. Alevra, H. Klein, T. Delvigne

Research output: Contribution to journalArticlepeer-review

Abstract

Neutron yield measurements are performed at the Jülich Tokamak experiment TEXTOR with different detectors located around the Tokamak and on center axis above the shielding roof. Due to the large structure of the machine and the extended diagnostic equipment, both virgin and scattered neutrons are detected. To prepare a Bonner sphere of appropriate response, the shape of the degraded neutron spectrum was determined with a spherical ionization chamber in situ. These investigations have been enlarged under quasi-real conditions at the accelerator facility of the Physikalisch-Technische Bundesanstalt in Braunschweig with a set of Bonner spheres used as a spectrometer. For the calibration the plasma neutron source is simulated by two point sources, 238Pu/B and 252Cf. The sources are moved around the TEXTOR vessel along the position of the magnetic axis.

Original languageEnglish
Pages (from-to)1945-1952
Number of pages8
JournalReview of Scientific Instruments
Volume63
Issue number3
DOIs
Publication statusPublished - 1992

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