Comparison of Multialkali and GaAs photocathode detectors for Joint European Torus edge light detection and ranging Thomson scattering profiles (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Comparison of Multialkali and GaAs photocathode detectors for Joint European Torus edge light detection and ranging Thomson scattering profiles (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1063/1.1787923 (literal)

Alternative label

• M.Kempenaars; P.Nielsen; R.Pasqualotto; C.Gowers; M.Beurskens; and JET-EFDAContributors (2004)
  Comparison of Multialkali and GaAs photocathode detectors for Joint European Torus edge light detection and ranging Thomson scattering profiles
  in Review of scientific instruments; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• M.Kempenaars; P.Nielsen; R.Pasqualotto; C.Gowers; M.Beurskens; and JET-EFDAContributors (literal)

Pagina inizio

• 3894 (literal)

Pagina fine

• 3896 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 75 (literal)

Rivista

• Review of scientific instruments (Rivista)

Note

• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• FOM-Rijnhuizen, Ass. Euratom-FOM, TEC, PO Box 1207, 3430 BE Nieuwegein, The Netherlands; Consorzio RFX-Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy; Consorzio RFX-Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy; EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, United Kingdom; FOM-Rijnhuizen, Ass. Euratom-FOM, TEC, PO Box 1207, 3430 BE Nieuwegein, The Netherlands (literal)

Titolo

• Comparison of Multialkali and GaAs photocathode detectors for Joint European Torus edge light detection and ranging Thomson scattering profiles (literal)

Abstract

• The Joint European Torus (JET) tokamak has two light detection and ranging (LIDAR) Thomson scattering systems, one for the core and one dedicated to the edge T-e and n(e) profiles. The LIDAR scheme is unique to JET and is envisaged for use on ITER. The system's spatial resolution is defined by the convolution product of its components: laser pulse duration, detector response time, and digitizer speed. The original multialkali photocathode microchannel plate photomultipliers dictated the response time, resulting in a 12 cm spatial resolution along the line of sight. In the edge LIDAR system, this is improved by aligning the line of sight with the flux surfaces, thus improving the effective spatial resolution to 2 cm depending on the plasma configuration. To meet demands for better edge gradient resolution, an upgrade to higher quantum efficiency detectors was proposed. Four GaAs photocathode detectors have been procured, two of which surpass expectations. These detectors are shown to have a more than two times higher effective quantum efficiency and their response time is at least twice as fast as the multialkali detectors. Combined with a fast digitizer this improves the spatial resolution by a factor of two, down to one centimeter effective, depending on plasma configuration. (C) 2004 American Institute of Physics. (literal)

Editore

• American Institute Of Physics (AIP) (Editore)

Prodotto di

• Institute of ionized gas (IGI) (Istituto)
• Esperimento RFX ed attività collegate (ET.P05.003.001) (Modulo)

Autore CNR

• ROBERTO PASQUALOTTO (Unità di personale interno)

Incoming links:

Autore CNR di

• ROBERTO PASQUALOTTO (Unità di personale interno)

Prodotto

• Institute of ionized gas (IGI) (Istituto)
• Esperimento RFX ed attività collegate (ET.P05.003.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Review of scientific instruments (Rivista)

Editore di

• American Institute Of Physics (AIP) (Editore)