TY - JOUR

T1 - Experimental issues of energy balance in open magnetic trap

AU - Soldatkina, Elena I.

AU - Meyster, Andrey K.

AU - Yakovlev, Dmitry V.

AU - Bagryansky, Peter A.

N1 - The study was supported by the Ministry of Science and Higher Education of the Russian Federation.

PY - 2024/3/14

Y1 - 2024/3/14

N2 - The paper presents an overview of experimental results of an investigation of different energy loss channels in the gas dynamic trap (GDT), which is a magnetic mirror plasma confinement device in the Budker Institute of Nuclear Physics. Energy losses along magnetic field lines are considered as well as losses onto radial limiters, which restrict the plasma column radius and provide its magnetohydrodynamic stability via the ‘vortex confinement’ mechanism. The losses along the field lines were measured using a set of pyroelectric bolometers on the plasma absorber and the losses onto the limiters were determined with thermistors from their temperature rise. Additionally, the losses due to charge exchange of fast plasma ions on the residual neutral gas in the GDT were measured using a longitudinal array of pyroelectric bolometers mounted on the wall of the central cell. An attempt was made to draw up the energy balance in the GDT in order to identify the predominant loss channels and reduce those losses in the future.

AB - The paper presents an overview of experimental results of an investigation of different energy loss channels in the gas dynamic trap (GDT), which is a magnetic mirror plasma confinement device in the Budker Institute of Nuclear Physics. Energy losses along magnetic field lines are considered as well as losses onto radial limiters, which restrict the plasma column radius and provide its magnetohydrodynamic stability via the ‘vortex confinement’ mechanism. The losses along the field lines were measured using a set of pyroelectric bolometers on the plasma absorber and the losses onto the limiters were determined with thermistors from their temperature rise. Additionally, the losses due to charge exchange of fast plasma ions on the residual neutral gas in the GDT were measured using a longitudinal array of pyroelectric bolometers mounted on the wall of the central cell. An attempt was made to draw up the energy balance in the GDT in order to identify the predominant loss channels and reduce those losses in the future.

KW - fusion plasma

KW - plasma confinement

KW - plasma diagnostics

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85187793046&origin=inward&txGid=fe5e4c3c5b63e4b527646c700f214644

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001192368700001

UR - https://www.mendeley.com/catalogue/c59b86c4-b9bf-311b-8368-d7983ec8d60a/

U2 - 10.1017/S0022377824000254

DO - 10.1017/S0022377824000254

M3 - Article

VL - 90

JO - Journal of Plasma Physics

JF - Journal of Plasma Physics

SN - 0022-3778

IS - 2

M1 - 975900203

ER -