Title :
Repetitive 30-GHz free-electron maser applicable for RF testing properties of materials
Author :
Peskov, Nikolai Yu ; Ginzburg, Naum S. ; Elzhov, Artem V. ; Kaminsky, Alim K. ; Kuzikov, Sergey V. ; Perelshtein, Elkuno A. ; Sedykh, Sergey N. ; Sergeev, Anatoly P. ; Sergeev, Alexander S.
Author_Institution :
Inst. of Appl. Phys., Nizhny Novgorod, Russia
Abstract :
The paper is devoted to progress in development and application of the JINR-IAP FEM. This Bragg FEM generates 30 GHz pulses of up to 200 ns duration and 20-30 MW power with an efficiency on the level of ~25 %. Frequency tuning in the range of 6 % with a precision of about 0.1 % was realized by mechanical variation of the distance between the Bragg reflectors. A test facility to study surface heating effects at 30 GHz was constructed based on the FEM source. A special copper cavity modeled on high-Q accelerating structure has been designed with the expected temperature rise of the surface during each pulse of about 200°C. The cavity heating stress caused by 106 RF-pulses at a repetition rate of 1 Hz will be studied.
Keywords :
cavity resonators; copper; masers; optical design techniques; optical elements; optical pulse generation; optical tuning; Bragg FEM; Bragg reflectors; Cu; FEM source; JINR-IAP FEM; RF testing properties; cavity heating stress; free-electron maser; frequency 30 GHz; frequency tuning; high-Q accelerating structure; mechanical variation; power 20 MW to 30 MW; special copper cavity model; surface heating effects; test facility; Acceleration; Copper; Heating; Solenoids; USA Councils;
Conference_Titel :
High-Power Particle Beams (BEAMS 2004), 2004 International Conference on
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-87911-088-3
