Upgrade of the JET gamma-ray cameras

被引：0

作者：

Soare, S. ^{[1
]}

Zoita, V. ^{[2
]}

Craciunescu, T. ^{[2
]}

Curuia, M. ^{[1
]}

Kiptily, V. ^{[3
]}

Lengar, I. ^{[4
]}

Murari, A. ^{[5
]}

Prior, P.

Anghel, M. ^{[1
]}

Bonheure, G. ^{[6
]}

Constantin, M. ^{[1
]}

David, E. ^{[1
]}

Edlington, T. ^{[3
]}

Falie, D. ^{[2
]}

Griph, S. ^{[3
]}

Le Guern, F. ^{[7
]}

Krivchenkov, Y. ^{[3
]}

Loughlin, M. ^{[3
]}

Pantea, A. ^{[2
]}

Popovichev, S. ^{[3
]}

Riccardo, V. ^{[3
]}

Syme, B. ^{[3
]}

Thompson, V. ^{[3
]}

Tiseanu, I. ^{[2
]}

机构：

[1] Natl Inst Cryogen, Assoc EURATOM MEdC, Valcea, Romania

[2] EURATOM, Natl Inst Laser Plasma & Radiat Phys, MEdC, Bucharest, Romania

[3] EURATOM, UKEA JOC, Cullham Sci Ctr, Abingdon, Oxon, England

[4] EURATOM, ENEA, RFX, Ljubljana, Slovenia

[5] EURATOM, ENEA, RFX, Padua, Italy

[6] EURATOM, LPP ERM KMS, B-1000 Brussels, Belgium

[7] Culham Sci Ctr, JET CSU, Abingdon, Oxon, England

[8] Culham Sci Ctr, JET EFDA, Abingdon OX14 3DB, Oxon, England

来源：

BURNING PLASMA DIAGNOSTICS | 2008年 / 988卷

关键词：

tokamak; diagnostics; gamma-rays;

D O I：

暂无

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The JET gamma-ray camera diagnostics have already provided valuable information on the gamma-ray imaging of fast ion in JET plasmas /1, 2/. The applicability of gamma-ray imaging to high performance deuterium and deuterium-tritium JET discharges is strongly dependent on the fulfilment of rather strict requirements for the characterisation of the neutron and gamma-ray radiation fields. These requirements have to be satisfied within very stringent boundary conditions for the design, such as the requirement of minimum impact on the co-existing neutron camera diagnostics. The JET Gamma-Ray Cameras (GRC) upgrade project deals with these issues with particular emphasis on the design of appropriate neutron/gamma-ray filters ("neutron attenuators"). Several design versions have been developed and evaluated for the JET GRC neutron attenuators at the conceptual design level. The main design parameter was the neutron attenuation factor. The two design solutions, that have been finally chosen and developed at the level of scheme design, consist of: a) one quasi-crescent shaped neutron attenuator (for the horizontal camera) and b) two quasi-trapezoid shaped neutron attenuators (for the vertical one). The second design solution has different attenuation lengths: a short version, to be used together with the horizontal attenuator for deuterium discharges, and a long version to be used for high performance deuterium and DT discharges. Various neutron-attenuating materials have been considered (lithium hydride with natural isotopic composition and Li-6 enriched, light and heavy water, polyethylene). Pure light water was finally chosen as the attenuating material for the JET gamma-ray cameras. The neutron attenuators will be steered in and out of the detector line-of-sight by means of an electro-pneumatic steering and control system. The MCNP code was used for neutron and gamma ray transport in order to evaluate the effect of the neutron attenuators on the neutron field of the JET GRC. The modelling was dedicated to the estimation of neutron and (plasma-emitted) gamma-ray attenuation, neutron-induced gamma-ray background and the neutron in-scattering impact on the neutron detectors due to the attenuator in the parking location. A numerical study of the gamma-ray detector (CsI(T1)) was done by means of the IST Monte Carlo code. It provided preliminary results on the detector efficiency and response function.

引用

页码：299 / +

页数：3

共 50 条

[11] A SURVEY OF MEDICAL GAMMA-RAY CAMERAS
MOODY, NF
PAUL, W
JOY, MLG
PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, 1970, 58 (02): : 217 - +
[12] STEREOSCOPIC IMAGES WITH GAMMA-RAY CAMERAS
MCINTYRE, JA
OPTICAL ENGINEERING, 1978, 17 (05) : 553 - 560
[13] GAMMA-RAY IMAGING WITH COMPTON CAMERAS
PHILLIPS, GW
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1995, 99 (1-4): : 674 - 677
[14] Upgrade of the tangential gamma-ray spectrometer beam-line for JET DT experiments
Curuia, Marian
Craciunescu, Teddy
Soare, Sorin
Zoita, Vasile
Braic, Viorel
Croft, David
Fernandes, Ana
Figueiredo, Joao
Goloborod'ko, Victor
Gorini, Giuseppe
Griph, Sverker
Kiptily, Vasily
Lengar, Igor
Mianowski, Slavomir
Naish, Jonathan
Naish, Richard
Nocente, Massimo
Pereira, Rita Costa
Riccardo, Valeria
Schoepf, Klaus
Santos, Bruno
Tardocchi, Marco
Yavorskij, Victor
Zychor, Izabella
Abhangi, M.
Abreu, P.
Aftanas, M.
Afzal, M.
Aggarwal, K. M.
Aho-Mantila, L.
Ahonen, E.
Aints, M.
Airila, M.
Albanese, R.
Alegre, D.
Alessi, E.
Aleynikov, P.
Alfier, A.
Alkseev, A.
Allan, P.
Almaviva, S.
Alonso, A.
Alper, B.
Alsworth, I.
Alves, D.
Ambrosino, G.
Ambrosino, R.
Amosov, V.
Andersson, F.
Andersson Sunden, E.
FUSION ENGINEERING AND DESIGN, 2017, 123 : 749 - 753
[15] DESIGN BASIS FOR PINHOLE GAMMA-RAY CAMERAS
GREENFIELD, MA
KOONTZ, RL
TRANSACTIONS OF THE AMERICAN NUCLEAR SOCIETY, 1964, 7 (02): : 473 - &
[16] CARDIAC RADIOISOTOPE TOMOGRAPHY WITH GAMMA-RAY CAMERAS
AMOR, M
BERTRAND, A
KARCHER, G
RIGO, P
HOCQUARD, C
FAIVRE, G
PRESSE MEDICALE, 1986, 15 (13): : 611 - 616
[17] DESIGN BASIS FOR PINHOLE GAMMA-RAY CAMERAS
GREENFIE.MA
KOONTZ, RL
NUCLEAR APPLICATIONS, 1966, 2 (05): : 415 - &
[18] A DIVERGING COLLIMATOR FOR GAMMA-RAY IMAGING CAMERAS
MUEHLLEHNER, G
JOURNAL OF NUCLEAR MEDICINE, 1969, 10 (04) : 197 - +
[19] OPTIMIZATION OF GAMMA-RAY CAMERAS OF ANGER TYPE
JATTEAU, M
LELONG, P
NORMAND, G
OTT, J
PAUVERT, J
PERGRALE, J
ACTA ELECTRONICA, 1979, 22 (02): : 91 - 117
[20] Performance of the prototype LaBr3 spectrometer developed for the JET gamma-ray camera upgrade
Rigamonti, D.
Muraro, A.
Nocente, M.
Perseo, V.
Boltruczyk, G.
Fernandes, A.
Figueiredo, J.
Giacomelli, L.
Gorini, G.
Gosk, M.
Kiptily, V.
Korolczuk, S.
Mianowski, S.
Murari, A.
Pereira, R. C.
Cippo, E. P.
Zychor, I.
Tardocchi, M.
Abhangi, M.
Abreu, P.
Aftanas, M.
Afzal, M.
Aggarwal, K. M.
Aho-Mantila, L.
Ahonen, E.
Aints, M.
Airila, M.
Albanese, R.
Alegre, D.
Alessi, E.
Aleynikov, P.
Alfier, A.
Alkseev, A.
Allan, P.
Almaviva, S.
Alonso, A.
Alper, B.
Alsworth, I.
Alves, D.
Ambrosino, G.
Ambrosino, R.
Amosov, V.
Andersson, F.
Andersson Sunden, E.
Angelone, M.
Anghel, A.
Anghel, M.
Angioni, C.
Appel, L.
Apruzzese, G.
REVIEW OF SCIENTIFIC INSTRUMENTS, 2016, 87 (11):

← 1 2 3 4 5 →