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Radiation level analysis for the port cell of the ITER electron cyclotron-heating upper launcher

Weinhorst, B.; Fischer, U.; Lu, L.; Strauss, D.; Spaeh, P.; Scherer, T.; Leichtle, D.

Abstract:
The electron cyclotron-heating upper launcher (ECHUL) will be installed in four upper ports of the ITER tokamak thermonuclear fusion reactor. Each ECHUL is able to deposit 8 MW power into the plasma for plasma mode stabilization via microwave beam lines. An essential part of these beam lines are the diamond windows. They are located in the upper port cell behind the bioshield to reduce the radiation levels to a minimum. The paper describes the first detailed neutronic modelling of the ECHUL port cell with ECHUL equipment. The bioshield plug is modelled including passageways for the microwave beam lines, piping and cables looms as well as rails and openings for ventilation.The port cell is equipped with the beam lines including the diamond windows, the beam lines mounting box, conduit boxes and rails. The neutrons are transported into the port cell starting from a surface source in front of the bioshield. Neutronic results are obtained for radiation levels in the port cell at different positions, mainly focusing on the diamond windows position, to verify that the radiation level is below the limit for maintenance in the port cell.


Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Institut für Neutronenphysik und Reaktortechnik (INR)
Publikationstyp Vortrag
Jahr 2015
Sprache Englisch
Identifikator KITopen-ID: 230101290
HGF-Programm 31.03.05 (POF III, LK 01)
Veranstaltung 12th International Symposium on Fusion Nuclear Technology (ISFNT 2015), Jeju, Korea, 14th - 18th September 2015
Schlagworte ITER, ECHUL, MCNP, port cell, dose rate
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