Monitor for the carbon and oxygen impurities in the ASDEX Upgrade tokamak

R. Neu; K. Asmussen; G. Fussmann; P. Geltenbort; G. Janeschitz; K. Schönmann; G. Schramm; U. Schumacher

doi:10.1063/1.1147522

Monitor for the carbon and oxygen impurities in the ASDEX Upgrade tokamak

R. Neu, K. Asmussen, G. Fussmann, P. Geltenbort, G. Janeschitz, K. Schönmann, G. Schramm, U. Schumacher

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A Bragg spectrometer for monitoring impurity radiation of hydrogenlike carbon and oxygen at the tokamak ASDEX Upgrade is presented. The use of fast multistrip proportional counters allows soft x-ray photon counting with count rates above 1 MHz in a simple arrangement. The absolute calibration was performed using a large area x-ray tube with a LiF anode. The concentrations of both impurities are calculated using the coronal model both for ionization and electron impact excitation. The results of the measurements concerning the long term behavior before and after conditioning of the torus walls by boronization as well as the fast plasma processes are presented.

Original language	English
Pages (from-to)	1829-1833
Number of pages	5
Journal	Review of Scientific Instruments
Volume	67
Issue number	5
DOIs	https://doi.org/10.1063/1.1147522
State	Published - May 1996
Externally published	Yes

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10.1063/1.1147522

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title = "Monitor for the carbon and oxygen impurities in the ASDEX Upgrade tokamak",

abstract = "A Bragg spectrometer for monitoring impurity radiation of hydrogenlike carbon and oxygen at the tokamak ASDEX Upgrade is presented. The use of fast multistrip proportional counters allows soft x-ray photon counting with count rates above 1 MHz in a simple arrangement. The absolute calibration was performed using a large area x-ray tube with a LiF anode. The concentrations of both impurities are calculated using the coronal model both for ionization and electron impact excitation. The results of the measurements concerning the long term behavior before and after conditioning of the torus walls by boronization as well as the fast plasma processes are presented.",

author = "R. Neu and K. Asmussen and G. Fussmann and P. Geltenbort and G. Janeschitz and K. Sch{\"o}nmann and G. Schramm and U. Schumacher",

year = "1996",

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doi = "10.1063/1.1147522",

language = "English",

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T1 - Monitor for the carbon and oxygen impurities in the ASDEX Upgrade tokamak

AU - Neu, R.

AU - Asmussen, K.

AU - Fussmann, G.

AU - Geltenbort, P.

AU - Janeschitz, G.

AU - Schönmann, K.

AU - Schramm, G.

AU - Schumacher, U.

PY - 1996/5

Y1 - 1996/5

N2 - A Bragg spectrometer for monitoring impurity radiation of hydrogenlike carbon and oxygen at the tokamak ASDEX Upgrade is presented. The use of fast multistrip proportional counters allows soft x-ray photon counting with count rates above 1 MHz in a simple arrangement. The absolute calibration was performed using a large area x-ray tube with a LiF anode. The concentrations of both impurities are calculated using the coronal model both for ionization and electron impact excitation. The results of the measurements concerning the long term behavior before and after conditioning of the torus walls by boronization as well as the fast plasma processes are presented.

AB - A Bragg spectrometer for monitoring impurity radiation of hydrogenlike carbon and oxygen at the tokamak ASDEX Upgrade is presented. The use of fast multistrip proportional counters allows soft x-ray photon counting with count rates above 1 MHz in a simple arrangement. The absolute calibration was performed using a large area x-ray tube with a LiF anode. The concentrations of both impurities are calculated using the coronal model both for ionization and electron impact excitation. The results of the measurements concerning the long term behavior before and after conditioning of the torus walls by boronization as well as the fast plasma processes are presented.

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DO - 10.1063/1.1147522

M3 - Article

AN - SCOPUS:0242326997

SN - 0034-6748

VL - 67

SP - 1829

EP - 1833

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 5

ER -

Monitor for the carbon and oxygen impurities in the ASDEX Upgrade tokamak

Abstract

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