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Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy

S. Fischer, M. Sturm, M. Schlösser, B. Bornschein, G. Drexlin, F. Priester, R. J. Lewis, H. H. Telle, Helmut Telle

Fusion Science and Technology, Volume: 60, Issue: 3, Pages: 925 - 930

Swansea University Author: Helmut Telle

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DOI (Published version): 10.13182/FST11-A12567

Abstract

The gas circulation loop LOOPINO has been set up and commissioned at Tritium Laboratory Karlsruhe (TLK) to perform Raman measurements of circulating tritium mixtures under conditions similar to the inner loop system of the neutrino-mass experiment KATRIN, which is currently under construction. A cus...

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Published in: Fusion Science and Technology
ISSN: 1536-1055 1943-7641
Published: 2011
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URI: https://cronfa.swan.ac.uk/Record/cronfa7933
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spelling 2019-06-13T17:58:20.6561528 v2 7933 2012-02-22 Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy 7f645d598f0afb573309bc5f86ea46fa Helmut Telle Helmut Telle true false 2012-02-22 FGSEN The gas circulation loop LOOPINO has been set up and commissioned at Tritium Laboratory Karlsruhe (TLK) to perform Raman measurements of circulating tritium mixtures under conditions similar to the inner loop system of the neutrino-mass experiment KATRIN, which is currently under construction. A custom-made interface is used to connect the tritium containing measurement cell, located inside a glove box, with the Raman setup standing on the outside. A tritium sample (purity > 95 %, 20 kPa total pressure) was circulated in LOOPINO for more than three weeks with a total throughput of 770 g of tritium. Compositional changes in the sample and the formation of tritiated and deuterated methanes CT4-nXn (X=H,D; n=0,1) were observed. Both effects are caused by hydrogen isotope exchange reactions and gas-wall interactions, due to tritium decay. A precision of 0.1 % was achieved for the monitoring of the T2 Q1-branch, which fulfils the requirements for the KATRIN experiment and demonstrates the feasibility of high-precision Raman measurements with tritium inside a glove box. Journal Article Fusion Science and Technology 60 3 925 930 1536-1055 1943-7641 31 10 2011 2011-10-31 10.13182/FST11-A12567 http://www.ans.org/pubs/journals/fst/a_12567 http://arxiv.org/abs/1208.1605a. The author made a substantial contribution to the conception and design of the study; and to analysis and interpretation of study data. COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-06-13T17:58:20.6561528 2012-02-22T13:37:02.0000000 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics S. Fischer 1 M. Sturm 2 M. Schlösser 3 B. Bornschein 4 G. Drexlin 5 F. Priester 6 R. J. Lewis 7 H. H. Telle 8 Helmut Telle 9
title Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
spellingShingle Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
Helmut Telle
title_short Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
title_full Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
title_fullStr Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
title_full_unstemmed Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
title_sort Monitoring of Tritium Purity During Long-Term Circulation in the KATRIN Test Experiment LOOPINO Using Laser Raman Spectroscopy
author_id_str_mv 7f645d598f0afb573309bc5f86ea46fa
author_id_fullname_str_mv 7f645d598f0afb573309bc5f86ea46fa_***_Helmut Telle
author Helmut Telle
author2 S. Fischer
M. Sturm
M. Schlösser
B. Bornschein
G. Drexlin
F. Priester
R. J. Lewis
H. H. Telle
Helmut Telle
format Journal article
container_title Fusion Science and Technology
container_volume 60
container_issue 3
container_start_page 925
publishDate 2011
institution Swansea University
issn 1536-1055
1943-7641
doi_str_mv 10.13182/FST11-A12567
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://www.ans.org/pubs/journals/fst/a_12567
document_store_str 0
active_str 0
description The gas circulation loop LOOPINO has been set up and commissioned at Tritium Laboratory Karlsruhe (TLK) to perform Raman measurements of circulating tritium mixtures under conditions similar to the inner loop system of the neutrino-mass experiment KATRIN, which is currently under construction. A custom-made interface is used to connect the tritium containing measurement cell, located inside a glove box, with the Raman setup standing on the outside. A tritium sample (purity > 95 %, 20 kPa total pressure) was circulated in LOOPINO for more than three weeks with a total throughput of 770 g of tritium. Compositional changes in the sample and the formation of tritiated and deuterated methanes CT4-nXn (X=H,D; n=0,1) were observed. Both effects are caused by hydrogen isotope exchange reactions and gas-wall interactions, due to tritium decay. A precision of 0.1 % was achieved for the monitoring of the T2 Q1-branch, which fulfils the requirements for the KATRIN experiment and demonstrates the feasibility of high-precision Raman measurements with tritium inside a glove box.
published_date 2011-10-31T03:09:55Z
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score 11.0133505

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