Speaker
Ilya Gornikel
(Alphysica GmbH)
Description
Cryogenic systems for fusion reactors have to cope with large pulsed heat load generated during fusion experiments. The paper is focused on mitigation of pulsed heat power arriving to the cryoplant from several parallel cooling loops of tokamak superconducting magnets. A new control strategy is proposed. The pressure drop measured at the return cryoline serves as a feedback signal to mitigate the total heat load on the cryoplant by adjustment of a circulator speed.
The efficiency of the strategy has been numerically tested with the thermal-hydraulic code Venecia using a model of the ITER tokamak TF coils with the support structures and the cryodistribution system. Results of the simulations are presented for the normal operation and for the plasma disruption event followed by fast discharge.
Co-authors
Daria Arslanova
(JSC «NIIEFA», St.Petersburg, Russian Federation)
Ilya Gornikel
(Alphysica GmbH, Karlsruhe, Germany)
Luigi Serio
(CERN, Meyrin, Switzerland)
Marina Kaparkova
(JSC «NIIEFA», St.Petersburg, Russian Federation)
Nicolai Shatil
(JSC «NIIEFA», St.Petersburg, Russian Federation;Alphysica GmbH, Karlsruhe, Germany)
Sergei Sytchevsky
(JSC «NIIEFA», St.Petersburg, Russian Federation)
Valery Belyakov
(JSC «NIIEFA», St.Petersburg, Russian Federation)
Vladimir Kalinin
(Alphysica GmbH, Karlsruhe, Germany)
Vyacheslav Vasiliev
(JSC «NIIEFA», St.Petersburg, Russian Federation;Alphysica GmbH, Karlsruhe, Germany)
