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The power output of fusion devices is measured from their neutron yields which relate directly to the fusion yield. In this paper we describe the devices and methods that have been prepared to perform a new in situ 14 MeV neutron calibration at JET in view of the new DT campaign planned at JET in the next years. The target accuracy of this calibration is ±10% as required for ITER, where a precise neutron yield measurement is important, e.g., for tritium accountancy. In this paper, the constraints and early decisions which defined the main calibration approach are discussed, e.g., the choice of 14 MeV neutron source and the deployment method. The physics preparations, source issues, safety and engineering aspects required to calibrate directly the JET neutron detectors are also discussed. The existing JET remote-handling system will be used to deploy the neutron source inside the JET vessel. For this purpose, compatible tooling and systems necessary to ensure safe and efficient deployment have been developed. The scientific programme of the preparatory phase is devoted to fully characterizing the selected 14 MeV neutron generator to be used as the calibrating source, obtain a better understanding of the limitations of the calibration, optimise the measurements and other provisions, and to provide corrections for perturbing factors (e.g., anisotropy of the neutron generator, neutron energy spectrum dependence on emission angle). Much of this work has been based on an extensive programme of Monte-Carlo calculations which provide support and guidance in developing the calibration strategy.
Technical preparations for the in-vessel 14 MeV neutron calibration at JET
Batistoni, P.;Popovichev, S.;Crowe, R.;Cufar, A.;Ghani, Z.;Keogh, K.;Peacock, A.;Price, R.;Baranov, A.;Korotkov, S.;Lykin, P.;Samoshin, A.;Abhangi, M.;Abreu, P.;Aftanas, M.;Afzal, M.;Aggarwal, K. M.;Aho Mantila, L.;Ahonen, E.;Aints, M.;Airila, M.;Albanese, R.;Alegre, D.;Alessi, E.;Aleynikov, P.;Alfier, A.;Alkseev, A.;Allan, P.;Almaviva, S.;Alonso, A.;Alper, B.;Alsworth, I.;Alves, D.;Ambrosino, G.;Ambrosino, R.;Amosov, V.;Andersson, F.;Andersson Sunde´n, E.;Angelone, M.;Anghel, A.;Anghel, M.;Angioni, C.;Appel, L.;Apruzzese, G.;Arena, P.;Ariola, M.;Arnichand, H.;Arnoux, G.;Arshad, S.;Ash, A.;Asp, E.;Asunta, O.;Cooper, D.;Cooper, S. R.;Corre, Y.;Corrigan, G.;Cortes, S.;Coster, D.;Couchman, A. S.;Cox, M.;Cox, M. P.;Cox, P.;Craciunescu, T.;Cramp, S.;Crisanti, F.;Cristescu, I.;Croci, G.;Croft, O.;Crombe, K.;Crowe, R.;Cruz, N.;Cseh, G.;Cull, K.;Cupido, L.;Curran, D.;Curuia, M.;Czarnecka, A.;Czarski, T.;Dalley, S.;Dalziel, A.;Darrow, D.;Davies, R.;Davis, W.;Day, C.;Day, I. E.;de la Cal, E.;de la Luna, E.;De Magistris, M.;de Pablos, J. L.;De Tommasi, G.;de Vries, P. C.;Deakin, K.;Deane, J.;Decker, J.;Degli Agostini, F.;Dejarnac, R.;Delabie, E.;den Harder, N.;Dendy, R. O.;Denner, P.;Devaux, S.;Devynck, P.;Di Maio, F.;Di Pace, L.;Dittmar, T.;Dodt, D.;Donne, T.;Dooley, P.;Dorling, S. E.;Dormido Canto, S.;Doswon, S.;Douai, D.;Doyle, P. T.;Dreischuh, T.;Drewelow, P.;Drozdov, V.;Drozdowicz, K.;Dumont, R.;Dumortier, P.;Atanasiu, C. V.;Austin, Y.;Avotina, L.;Axton, M. D.;Dunai, D.;Dunne, M.;Dˇuran, I.;Durodie, F.;Ayres, C.;Bachmann, C.;Baciero, A.;Baia˜o, D.;Bailescu, V.;Baiocchi, B.;Baker, A.;Baker, R. A.;Balboa, I.;Balden, M.;Balshaw, N.;Bament, R.;Banks, J. W.;Baranov, Y. F.;Barlow, I. L.;Barnard, M. A.;Barnes, D.;Barnsley, R.;Baron Wiechec, A.;Baruzzo, M.;Basiuk, V.;Bassan, M.;Bastow, R.;Batista, A.;Batistoni, P.;Bauer, R.;Bauvir, B.;Bazylev, B.;Beal, J.;Beaumont, P. S.;Becoulet, A.;Bednarczyk, P.;Bekris, N.;Beldishevski, M.;Bell, K.;Belli, F.;Dutta, P.;Duval, B.;Dux, R.;Dylst, K.;Dzysiuk, N.;Edappala, P. V.;Edwards, A. M.;Eich, T.h.;Ekedahl, A.;Elevant, T.;El Jorf, R.;Elsmore, C. G.;Ericsson, G.;Eriksson, A.;Eriksson, J.;Eriksson, L. G.;Esposito, B.;Esser, H. G.;Esteve, D.;Evans, G. E.;Evans, J.;Ewart, G. D.;Ewers, D. T.;Fagan, D.;Falie, D.;Farthing, J. W.;Fasoli, A.;Fattorini, L.;Faugeras, B.;Faustin, J.;Fawlk, N.;Federici, G.;Fedorczak, N.;Felton, R. C.;Fenzi, C.;Fernades, A.;Fernandes, H.;Ferreira, J.;Bellinger, M.;Belo, J. K.;Belo, P.;Belonohy, E.´.;Fessey, J. A.;Figini, L.;Figueiredo, A.;Figueiredo, J.;Benterman, N. A.;Bergsåker, H.;Bernardo, J.;Bernert, M.;Berry, M.;Bertalot, L.;Beurskens, M. N. A.;Bieg, B.;Bielecki, J.;Biewer, T.;Bigi, M.;B´ılkova, P.;Binda, F.;Bizarro, J. P. S.;Bjo¨ rkas, C.;Blackman, K.;Blackman, T. R.;Blanchard, P.;Blanco, E.;Blatchford, P.;Bobkov, V.;Boboc, A.;Bodna´r, G.;Bogar, O.;Bolzonella, T.;Boncagni, L.;Bonham, R.;Bonheure, G.;Boom, J.;Booth, J.;Borba, D.;Borodin, D.;Botrugno, A.;Boulbe, C.;Boulting, P.;Bovert, K. V.;Bowden, M.;Bower, C.;Boyce, T.;Boyer, H. J.;Bradshaw, J. M. A.;Braic, V.;Breizman, B.;Bremond, S.;Brennan, P. D.;Brett, A.;Brezinsek, S.;Bright, M. D. J.;Brix, M.;Broeckx, W.;Brombin, M.;Brown, B. C.;Brown, D. P. D.;Brown, M.;Bruno, E.;Bucalossi, J.;Buch, J.;Buckley, M. A.;Bucko, K.;Budny, R.;Bufferand, H.;Bulman, M.;Bulmer, N.;Bunting, P.;Buratti, P.;Burcea, G.;Burckhart, A.;Buscarino, A.;Butcher, P. R.;Butler, N. K.;Bykov, I.;Byrne, J.;Byszuk, A.;Cackett, A.;Cahyna, P.;Cain, G.;Calabro, G.;Callaghan, C. P.;Campling, D. C.;Cane, J.;Cannas, B.;Capel, A. J.;Caputano, M.;Card, P. J.;Cardinali, A.;Carman, P.;Carralero, D.;Carraro, L.;Carvalho, B. B.;Carvalho, I.;Carvalho, P.;Casson, F. 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R.;Mertens, P.h.;Meshchaninov, S.;Messiaen, A.;Meszaros, B.;Meyer, H.;Miano, G.;Michling, R.;Middleton Gear, D.;Miettunen, J.;Migliucci, P.;Militello Asp, E.;Minucci, S.;Mirizzi, F.;Miyoshi, Y.;Mlyna´ˇr, J.;Monakhov, I.;Monier Garbet, P.;Mooney, R.;Moradi, S.;Mordijck, S.;Moreira, L.;Moreno, R.;Morgan, P. D.;Morgan, R.;Morley, L.;Morlock, C.;Morris, A. W.;Morris, J.;Moser, L.;Moulton, D.;Murari, A.;Muraro, A.;Mustata, I.;Asakura, N. N.;Nabais, F.;Nakano, T.;Nardon, E.;Naulin, V.;Nave, M. F. F.;Nedzelski, I.;Neethiraj, N.;Nemtsev, G.;Nespoli, F.;Neto, A.;Neu, R.;Neubauer, O.;Newman, M.;Nicholls, K. J.;Nicolai, D.;Nicolas, T.;Nieckchen, P.;Nielsen, P.;Nightingale, M. P. S.;Nilsson, E.;Nishijima, D.;Noble, C.;Nocente, M.;Nodwell, D.;Nordman, H.;Nunes, I.;O’Meara, B.;Oberkofler, M.;Obryk, B.;Odupitan, T.;Ogawa, M. T.;O’Gorman, T.;Okabayashi, M.;Olariu, S.;O’Mullane, M.;Ongena, J.;Orsitto, F.;Oswuigwe, B. 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2017-01-01
Abstract
The power output of fusion devices is measured from their neutron yields which relate directly to the fusion yield. In this paper we describe the devices and methods that have been prepared to perform a new in situ 14 MeV neutron calibration at JET in view of the new DT campaign planned at JET in the next years. The target accuracy of this calibration is ±10% as required for ITER, where a precise neutron yield measurement is important, e.g., for tritium accountancy. In this paper, the constraints and early decisions which defined the main calibration approach are discussed, e.g., the choice of 14 MeV neutron source and the deployment method. The physics preparations, source issues, safety and engineering aspects required to calibrate directly the JET neutron detectors are also discussed. The existing JET remote-handling system will be used to deploy the neutron source inside the JET vessel. For this purpose, compatible tooling and systems necessary to ensure safe and efficient deployment have been developed. The scientific programme of the preparatory phase is devoted to fully characterizing the selected 14 MeV neutron generator to be used as the calibrating source, obtain a better understanding of the limitations of the calibration, optimise the measurements and other provisions, and to provide corrections for perturbing factors (e.g., anisotropy of the neutron generator, neutron energy spectrum dependence on emission angle). Much of this work has been based on an extensive programme of Monte-Carlo calculations which provide support and guidance in developing the calibration strategy.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/126989
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.