First experimental results from the European Union 2-MW coaxial cavity iter gyrotron prototype

Hogge, J-P; Goodman, TP; Alberti, S; Albajar, F; Avramides, KA; Benin, P; Bethuys, S; Bin, W; Bonicelli, T; Bruschi, A; Cirant, S; Droz, E; Dumbrajs, O; Fasel, D; Gandini, F; Gantenbein, G; Illy, S; Jawla, S; Jin, J; Kern, S; Lavanchy, P; Lievin, C; Marletaz, B; Marmillod, P; Perez, A; Piosczyk, B; Pagonakis, I; Porte, L; Rzesnickl, T; Siravo, U; Thumm, M; Tran, MQ

dc.contributor.author	Hogge, J-P	en
dc.contributor.author	Goodman, TP	en
dc.contributor.author	Alberti, S	en
dc.contributor.author	Albajar, F	en
dc.contributor.author	Avramides, KA	en
dc.contributor.author	Benin, P	en
dc.contributor.author	Bethuys, S	en
dc.contributor.author	Bin, W	en
dc.contributor.author	Bonicelli, T	en
dc.contributor.author	Bruschi, A	en
dc.contributor.author	Cirant, S	en
dc.contributor.author	Droz, E	en
dc.contributor.author	Dumbrajs, O	en
dc.contributor.author	Fasel, D	en
dc.contributor.author	Gandini, F	en
dc.contributor.author	Gantenbein, G	en
dc.contributor.author	Illy, S	en
dc.contributor.author	Jawla, S	en
dc.contributor.author	Jin, J	en
dc.contributor.author	Kern, S	en
dc.contributor.author	Lavanchy, P	en
dc.contributor.author	Lievin, C	en
dc.contributor.author	Marletaz, B	en
dc.contributor.author	Marmillod, P	en
dc.contributor.author	Perez, A	en
dc.contributor.author	Piosczyk, B	en
dc.contributor.author	Pagonakis, I	en
dc.contributor.author	Porte, L	en
dc.contributor.author	Rzesnickl, T	en
dc.contributor.author	Siravo, U	en
dc.contributor.author	Thumm, M	en
dc.contributor.author	Tran, MQ	en
dc.date.accessioned	2014-03-01T02:46:10Z
dc.date.available	2014-03-01T02:46:10Z
dc.date.issued	2009	en
dc.identifier.issn	1536-1055	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32578
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-60649091308&partnerID=40&md5=5558bf34612cbf8d8e7475589855913a	en
dc.subject	Gyrotrons	en
dc.subject	High-power microwave sources	en
dc.subject	ITER	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.other	Experimental reactors	en
dc.subject.other	Gyrotrons	en
dc.subject.other	Microwaves	en
dc.subject.other	Test facilities	en
dc.subject.other	Tubes (components)	en
dc.subject.other	Beam energies	en
dc.subject.other	Beam profiles	en
dc.subject.other	Coaxial cavities	en
dc.subject.other	Continuous waves	en
dc.subject.other	CW operations	en
dc.subject.other	Design values	en
dc.subject.other	European unions	en
dc.subject.other	Forschungszentrum karlsruhe	en
dc.subject.other	High-power microwave sources	en
dc.subject.other	ITER	en
dc.subject.other	Output power	en
dc.subject.other	Pulse lengths	en
dc.subject.other	Radio frequencies	en
dc.subject.other	Short pulse	en
dc.subject.other	Switzerland	en
dc.subject.other	Microwave tubes	en
dc.title	First experimental results from the European Union 2-MW coaxial cavity iter gyrotron prototype	en
heal.type	conferenceItem	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The European Union is working toward providing 2-MW, coaxial-cavity, continuous-wave (cw) 170-GHz gyrotrons for ITER. Their design is based on results,from an experimental preprototype tube having a pulse length of several milliseconds, in operation at Forschungszentrum Karlsruhe (FZK) for several years now. The first industrial prototype tube was designed for cw operation but, in a first phase, aimed at a pulse length of 1 s at the European Gyrotron Test Facility in Lausanne, Switzerland, as part of a phased testing/development program. (1 s, 60 s, cw). The first experimental results of the operation of this prototype gyrotron are reported here. The microwave generation was characterized at very short pulse length (<0.01 s) using a load on loan from FZK, and the highest measured output power was 1.4 MW, at a beam energy significantly lower than the design value (83 k V instead of 90 kV), limited by arcing in the tube. The radio frequency (rf) beat, profile wets measured to allow reconstruction of the phase and amplitude profile at the window and to provide the necessary information permitting proper alignment of the compact rf loads prior to pulse extension. Arcs in the tube limited the pulse length extension to a few tens of milliseconds. According to present planning, the tube is going to be opened, inspected, and refurbished, depending on the results of the inspection, to allow testing of an improved version of the mode launcher and replacement of some subassemblies.	en
heal.publisher	AMER NUCLEAR SOC	en
heal.journalName	Fusion Science and Technology	en
dc.identifier.isi	ISI:000263009800007	en
dc.identifier.volume	55	en
dc.identifier.issue	2	en
dc.identifier.spage	204	en
dc.identifier.epage	212	en