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  4. Implementation and testing of the JET gamma-ray cameras neutron filters pneumatic system
 
conference paper

Implementation and testing of the JET gamma-ray cameras neutron filters pneumatic system

Curuia, Marian
•
Anghel, Mihai
•
Balshaw, Nick
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2011
Fusion Engineering And Design
26th Symposium on Fusion Technology (SOFT)

Neutron filters/attenuators have been designed and constructed as an upgrade of the JET gamma-ray cameras (GRC's). This diagnostics upgrade should reduce the neutron flux at the gamma-ray detectors in a way that it would make possible gamma-ray imaging measurements in high power deuterium JET pulses, and eventually in deuterium-tritium discharges. The attenuators will be placed within the GRC diagnostics system between the vacuum vessel port and the camera collimator radiation shields in the case of both the horizontal camera and the vertical one and they have to be moved out of the detector line of sight when the neutron/gamma camera diagnostics is used for neutron measurements. The neutron filters will operate in a very harsh electromagnetic environment. It is thus recommended to avoid as much as possible the use of electrical and electronic components for the attenuator steering and control (in particular, for attenuator steering). Therefore a steering and control system based on pneumatic components was designed and constructed. The attenuators together with the steering and control system have been installed on a test stand, which is a 1-1 scale replica of the JET structures where neutron filters are to be installed and successfully tested. (C) 2011 EURATOM. Published by Elsevier B.V. All rights reserved.

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Type
conference paper
DOI
10.1016/j.fusengdes.2011.01.125
Web of Science ID

WOS:000297426500169

Author(s)
Curuia, Marian
Anghel, Mihai
Balshaw, Nick
Blanchard, Patrick
Craciunescu, Teddy
Edlington, Trevor
Gherendi, Mihaela
Kiptily, Vasily
Kneupner, Klauss
Lengar, Igor
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Date Issued

2011

Published in
Fusion Engineering And Design
Volume

86

Start page

1196

End page

1199

Subjects

Tokamak

•

Diagnostics

•

Neutron filters

•

Neutron attenuators

•

Gamma-rays

•

Gamma-ray cameras

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
CRPP  
SPC  
Event nameEvent placeEvent date
26th Symposium on Fusion Technology (SOFT)

Porto, PORTUGAL

Sep 27-Oct 01, 2010

Available on Infoscience
June 25, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/82232
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