5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P2.208 Evolution of calorimetry methodology for beam current measurement of the LIPAc

6 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 208
Poster K. Laser and Accelerator Technologies P2 Poster session

Speaker

Koichi Nishiyama (IFMIF/EVEDA Project Team)

Description

IFMIF (International Fusion Material Irradiation Facility) will generate 14 MeV neutron flux for qualification and characterization of suitable structural materials of plasma exposed equipment of fusion power plants. IFMIF is an indispensable facility in the fusion roadmaps since provide neutrons with the similar characteristics as those generated in the DT fusion reactions of next steps after ITER. IFMIF is presently in its EVEDA (Engineering Validation and Engineering Design Activities) phase. As part of IFMIF Validation Activities, LIPAc (Linear IFMIF Prototype Accelerator), designed and constructed mainly in European labs (CIEMAT, CEA, INFN and SCK,CEN) with participation of JAEA, is currently under installation at Rokkasho (Japan). LIPAc will accelerate a 125mA CW and 9MeV deuteron beam for a total beam average power of 1.125MW. During the beam commissioning of the currently undergoing injector characterization, the exact absolute value of the beam current is still uncertain because the interceptive beam diagnostics devices have no electron suppressor. For high intensity beam the calorimetric measurement method is employed normally, in addition to ACCT at the end of LEBT (Low Energy Beam Transport) to reduce the impact of secondary electrons on current measurements. The LIPAc has such a capability by using a number of thermocouples to measure the temperature of inlet and outlet of cooling water channels in Faraday Cup, Injector Cone and Beam Stop of LEBT. This paper describes the techniques of the calorimetric measurement method of beam current of LIPAc with the recent results and comparison to using the other measurement methods of beam current.

Co-author

Koichi Nishiyama (IFMIF/EVEDA Project Team, National Instiutes for Quantum and Radiologocal Science and Technology, Kmikita-gun Aomori Perfecture, Japan)

Presentation Materials

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