title: Edge Thomson scattering diagnostic on COMPASS tokamak: installation, calibration, operation, improvements.
abstract: The core Thomson scattering diagnostic (TS) on the COMPASS tokamak was put in operation and reported earlier. Implementation of edge TS, with spatial resolution along the laser beam up to ∼1/100 of the tokamak minor radius, is presented now. The procedure for spatial calibration and alignment of both core and edge systems is described. Several further upgrades of the TS system, like a triggering unit and piezo motor driven vacuum window shutter, are introduced as well. The edge TS system, together with the core TS, is now in routine operation and provides electron temperature and density profiles.
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: P
authors.initials: P
authors.lastname: Bohm
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: M
authors.initials: M
authors.lastname: Aftanas
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: P
authors.initials: P
authors.lastname: Bilkova
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: E
authors.initials: E
authors.lastname: Stefanikova
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: O
authors.initials: O
authors.lastname: Mikulin
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: R
authors.initials: R
authors.lastname: Melich
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: F
authors.initials: F
authors.lastname: Janky
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Havlicek
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: D
authors.initials: D
authors.lastname: Sestak
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: V
authors.initials: V
authors.lastname: Weinzettl
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Stockel
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: M
authors.initials: M
authors.lastname: Hron
authors.affiliation: Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague, Czech Republic.
authors.forename: R
authors.initials: R
authors.lastname: Panek
authors.affiliation: CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom.
authors.forename: R
authors.initials: R
authors.lastname: Scannell
authors.affiliation: School of Electrical Engineering, Division of Fusion Plasma Physics, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
authors.forename: L
authors.initials: L
authors.lastname: Frassinetti
authors.affiliation: Consorzio RFX, Corso Stati Uniti, 4-35127 Padua, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Fassina
authors.affiliation: CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom.
authors.forename: G
authors.initials: G
authors.lastname: Naylor
authors.affiliation: ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul lez Durance, France.
authors.forename: M J
authors.initials: MJ
authors.lastname: Walsh