Relativistic klystron two-beam accelerator

Abstract

Relativistic klystrons are being developed as an rf power source for high gradient accelerators applications which include large linear electronpositron colliders, compact accelerators, and FEL sources. In a relativistic klystron two-beam accelerator (RK-TBA), the drive beam passes through a large number of rf output structures. High conversion efficiency of electron beam energy to rf energy can be achieved in two-beam accelerators using reacceleration of the bunched drive beam. We have conducted experiments which studied rf power extraction in an RK-TBA and have prepared a demonstration in which a modulated beam's energy is boosted as it passes through induction accelerator cells.

Large Self-Assembled Organopalladium Spheres

“…[2] This peak power increase is attributed to improve vacuum conditions and increased rf current due to the new modulator. While high peak powers were attained, the pulses were narrow and we had difficulties with mode purity at higher drive frequencies.…”

Relativistic-Klystron two-beam accelerator as a power source for future linear colliders

“…Experience [5] with the 72 cores in the gun leads us to believe that for a large RK-TBA, matching cell cores should permit acceptable energy loss variation.…”

“…A collaboration between the Lawrence Livermore National Laboratory (LLNL) and Lawrence Berkeley National Laboratory (LBNL) has been studying rf power sources based on the Relativistic Klystron Two-Beam Accelerator (RK-TBA) concept for several years [ 1,2]. Demanding beam parameters are required of the electron source, an induction injector, to achieve the transport goals.…”

RK-TBA studies at the RTA test facility

“…A Lawrenee BerkeleyNationalLaboratory (LBNL) and Lawrenee Livermore National Laboratory (LLNL) collaboration has been studying RF power sources based on the RK-TBA.concept for several years [1,2,3]. The collaboration prepared a preliminary design study for a RF power source suitable for the NLC [4] last year.…”