Title :
Prospects for developing microwave amplifiers to drive multi-TeV colliders
Author :
Granatstein, V.L. ; Nusinovich, G.S. ; Calame, J. ; Lawson, W. ; Singh, A. ; Guo, H. ; Reiser, M.
Author_Institution :
Inst. for Plasma Res., Maryland Univ., College Park, MD, USA
Abstract :
In multi-TeV linear colliders, overall accelerator length can be kept reasonable only if a high value of accelerating field is chosen, and this implies a relatively high value of rf frequency in order to avoid excessive dark current. We consider the feasibility of developing 30 GHz gyroklystron amplifiers. Amplifier output would be at the fourth harmonic of the electron cyclotron frequency to keep the magnetic field small (B0=4.3 kG). Efficiency would be maximized both by a scheme of doubling the amplifier input frequency in two stages and by using depressed collectors. We estimate that output power in a single amplifier would be >80 MW with overall electronic efficiency ~66%. With a high degree of pulse compression (32X), 1800 such amplifiers would drive a 3 TeV collider
Keywords :
accelerator RF systems; colliding beam accelerators; gyrotrons; klystrons; linear accelerators; linear colliders; microwave power amplifiers; power supplies to apparatus; 3 TeV; 30 GHz; 4.3 kG; 66 percent; 80 MW; RF frequency; accelerating field; accelerator length; depressed collectors; electron cyclotron frequency; fourth harmonic; gyroklystron amplifiers; microwave amplifiers; multiTeV linear colliders; Acceleration; Dark current; Electrons; Frequency; Klystrons; Linear accelerators; Microwave amplifiers; Power amplifiers; Pulse amplifiers; Radiofrequency amplifiers;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505286
