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Abstract

A time resolved energy dispersive X-ray diagnostic is being developed for the tokamak à configuration variable (TCV) tokamak to measure the evolution of the plasma impurities, runaway electrons and electron temperature. A liquid nitrogen cooled Ge diode detects the X-ray photons which are processed by a spectroscopic amplifier and a locally developed interface amplifier and timing generator (IATG) unit. The energy spectrum is obtained using a fast digitizer and a software histogramming algorithm. These electronics components have been optimized to improve the data throughput to match high flux 2 seconds time duration of a TCV plasma pulse. This paper describes the diagnostic hardware with particular emphasis on the IATG unit.

Additional information

Authors: SOUSA J, Associação EURATOM/IST, Centro de Fusão Nuclear, Instituto Superior Técnico, Lisboa (PT);AMARO P, Associação EURATOM/IST, Centro de Fusão Nuclear, Instituto Superior Técnico, Lisboa (PT);AMORIM P, Associação EURATOM/IST, Centro de Fusão Nuclear, Instituto Superior Técnico, Lisboa (PT);VARANDAS C A F, Associação EURATOM/IST, Centro de Fusão Nuclear, Instituto Superior Técnico, Lisboa (PT);DUVAL B, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH)
Bibliographic Reference: Article: Fusion Technology 1996, Elsevier Science BV (1997), pp. 881-884
Record Number: 199711483 / Last updated on: 1997-11-18
Category: PUBLICATION
Original language: en
Available languages: en