L. Frassinetti

8726707900

Publications - 1

Contribution to the multi-machine pedestal scaling from the COMPASS tokamak

P. Bilkova P. Bohm O. Bogár D. I. Naydenkova O. Grover M. Hron M. Komm R. Pánek M. Peterka J. Stockel K. Mitošinková M. Sos J. Varju L. Frassinetti M. Aftanas P. B. Snyder E. Stefanikova P. Hacek J. Krbec M. Berta J. Havlicek V. Weinzettl J. Urban P. Vondráček M. Imrišek

Publication Name: Nuclear Fusion

Publication Date: 2017-04-06

Volume: 57

Issue: 5

Page Range: Unknown

Description:

First systematic measurements of pedestal structure during Ohmic and NBI-assisted Type I ELMy H-modes were performed on the COMPASS tokamak in two dedicated experimental campaigns during 2015 and 2016. By adjusting the NBI heating and a toroidal magnetic field, the electron pedestal temperature was increased from 200 eV up to 300 eV, which allowed reaching pedestal collisionality v∗ ped < 1 at q95 ∼3. COMPASS has approached conditions for the Identity experiment done at JET and DIII-D, complementing the range of scanned p∗ ped. The pedestal pressure was successfully reproduced by the EPED model. The dependence of pedestal pressure width on v∗ ped and βpol ped is discussed.

Open Access: Yes

DOI: 10.1088/1741-4326/aa6659