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Matsumura, H.; Nakamura, H.; Toyoda, A.; Hozumi, K.I.; Sakai, H.; Enami, K.; Furuya, T.; Shinoe, K.; Umemori, K.; Haga, K.; Sakanaka, S.; Sawamura, M.; Cenni, E.
EPJ Web of Conferences, Proceedings of the 13. international conference on radiation shielding and 19. topical meeting of the radiation protection and shielding division of the American Nuclear Society - 20162017
EPJ Web of Conferences, Proceedings of the 13. international conference on radiation shielding and 19. topical meeting of the radiation protection and shielding division of the American Nuclear Society - 20162017
AbstractAbstract
[en] The field emission electron currents from the main superconducting cavities (Cavities 3 and 4) of compact ERL at KEK, Japan, were estimated indirectly from photon dose rates measured around the cavities and on the roof of the compact ERL room. The field emission electron currents estimated from the photon dose rates measured around the cavities are in good agreement with those on the roof of the compact ERL room. The field emission electron currents increased steeply with the applied voltage. The field emission electron currents corresponding to the applied voltages were different between Cavity 3 and Cavity 4. We found that the field emission electron current exceeded 1 μA at 13.5 MV for Cavity 3 and at 15.5 MV for Cavity 4. This result was used in considering unexpected loss of field emission electrons. (authors)
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Malgavi, F.; Malouch, F.; Diop, C.M'B.; Miss, J.; Trama, J.C. (eds.); EDP Sciences, 17, Avenue du Hoggar, Parc d'Activite de Courtaboeuf, BP 112, F-91944 Les Ulis Cedex A (France); v. 153 [1590 p.]; 2017; p. 07011.p.1-07011.p.6; ICRS-13: 13. international conference on radiation shielding; Paris (France); 3-6 Oct 2016; RPSD-2016: 19. topical meeting of the radiation protection and shielding division of the American Nuclear Society; Paris (France); 3-6 Oct 2016; Available from doi: http://dx.doi.org/10.1051/epjconf/201715307011; 6 refs.; This record replaces 51039580
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