SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Olivares Pablo Vallejos)
 

Search: WFRF:(Olivares Pablo Vallejos) > Maximum likelihood ...

Maximum likelihood bolometric tomography for the determination of the uncertainties in the radiation emission on JET TOKAMAK

Craciunescu, Teddy (author)
Culham Sci Ctr, JET, EUROfus Consortium, Abingdon OX14 3DB, Oxon, England.;Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania.,National Institute for Laser, Plasma and Radiation Physics, Magurele, Bucharest, Romania
Peluso, Emmanuele (author)
Culham Sci Ctr, JET, EUROfus Consortium, Abingdon OX14 3DB, Oxon, England.;Univ Roma Tor Vergata, Rome, Italy.
Bergsåker, Henric (author)
KTH,Fusionsplasmafysik
show more...
Bykov, Igor (author)
KTH,Fusionsplasmafysik
Frassinetti, Lorenzo (author)
KTH,Fusionsplasmafysik
Garcia-Carrasco, Alvaro (author)
KTH,Fusionsplasmafysik
Hellsten, Torbjörn (author)
KTH,Fusionsplasmafysik
Johnson, Thomas (author)
KTH,Fusionsplasmafysik
Menmuir, Sheena (author)
KTH,Fusionsplasmafysik
Petersson, Per (author)
KTH,Fusionsplasmafysik
Rachlew, Elisabeth, 1944- (author)
KTH,Fysik
Ratynskaia, Svetlana (author)
KTH,Rymd- och plasmafysik
Rubel, Marek (author)
KTH,Fusionsplasmafysik
Stefanikova, Estera (author)
KTH,Fusionsplasmafysik
Ström, Petter (author)
KTH,Fusionsplasmafysik
Tholerus, Emmi (author)
KTH,Fusionsplasmafysik
Tolias, Panagiotis (author)
KTH,Rymd- och plasmafysik
Olivares, Pablo Vallejos (author)
KTH,Fusionsplasmafysik
Weckmann, Armin (author)
KTH,Fusionsplasmafysik
Zhou, Yushun (author)
KTH,Fusionsplasmafysik
Zychor, I. (author)
Natl Ctr Nucl Res, PL-05400 Otwock, Poland.
Andersson Sundén, Erik (author)
Uppsala universitet,Tillämpad kärnfysik
Binda, Federico, 1987- (author)
Uppsala universitet,Tillämpad kärnfysik
Cecconello, Marco (author)
Uppsala universitet,Tillämpad kärnfysik
Conroy, Sean (author)
Uppsala universitet,Tillämpad kärnfysik
Dzysiuk, Nataliia (author)
Uppsala universitet,Tillämpad kärnfysik
Ericsson, Göran (author)
Uppsala universitet,Tillämpad kärnfysik
Eriksson, Jacob, Dr, 1985- (author)
Uppsala universitet,Tillämpad kärnfysik
Hellesen, Carl, 1980- (author)
Uppsala universitet,Tillämpad kärnfysik
Hjalmarsson, Anders (author)
Uppsala universitet,Tillämpad kärnfysik
Possnert, Göran, 1951- (author)
Uppsala universitet,Tillämpad kärnfysik
Sjöstrand, Henrik, 1978- (author)
Uppsala universitet,Tillämpad kärnfysik
Skiba, Mateusz, 1985- (author)
Uppsala universitet,Tillämpad kärnfysik
Weiszflog, Matthias (author)
Uppsala universitet,Tillämpad kärnfysik
show less...
Culham Sci Ctr, JET, EUROfus Consortium, Abingdon OX14 3DB, Oxon, England;Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania. National Institute for Laser, Plasma and Radiation Physics, Magurele, Bucharest, Romania (creator_code:org_t)
AMER INST PHYSICS, 2018
2018
English.
In: Review of Scientific Instruments. - : AMER INST PHYSICS. - 0034-6748 .- 1089-7623. ; 89:5
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • The total emission of radiation is a crucial quantity to calculate the power balances and to understand the physics of any Tokamak. Bolometric systems are the main tool to measure this important physical quantity through quite sophisticated tomographic inversion methods. On the Joint European Torus, the coverage of the bolometric diagnostic, due to the availability of basically only two projection angles, is quite limited, rendering the inversion a very ill-posed mathematical problem. A new approach, based on the maximum likelihood, has therefore been developed and implemented to alleviate one of the major weaknesses of traditional tomographic techniques: the difficulty to determine routinely the confidence intervals in the results. The method has been validated by numerical simulations with phantoms to assess the quality of the results and to optimise the configuration of the parameters for the main types of emissivity encountered experimentally. The typical levels of statistical errors, which may significantly influence the quality of the reconstructions, have been identified. The systematic tests with phantoms indicate that the errors in the reconstructions are quite limited and their effect on the total radiated power remains well below 10%. A comparison with other approaches to the inversion and to the regularization has also been performed.

Subject headings

NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

Publication and Content Type

ref (subject category)
art (subject category)

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view