The novel neutron spectrometer TOFED (Time of Flight Enhanced Diagnostics), comprising 90 individual photomultiplier tubes coupled with 85 plastic scintillation detectors through light guides, has been constructed and installed at Experimental Advanced Superconducting Tokamak. A dedicated magnetic shielding system has been constructed for TOFED, and is designed to guarantee the normal operation of photomultiplier tubes in the stray magnetic field leaking from the tokamak device. Experimental measurements and numerical simulations carried out employing the finite element method are combined to optimize the design of the magnetic shielding system. The system allows detectors to work properly in an external magnetic field of 200 G.
Design of a magnetic shielding system for the time of flight enhanced diagnostics neutron spectrometer at Experimentai Advanced Superconducting Tokamak
HTPD, Topical Conference on High-Temperature Plasma Diagnostics, 20 ; 11D829/1-11D829/3
Review of Scientific Instruments ; 85 , 11, Pt. 2
2014
3 Seiten, Bilder, 8 Quellen
Aufsatz (Konferenz)
Englisch
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