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RIS citation export for MOPMY037: GaN Class-F Power Amplifier for Klystron Replacement

AU - Smirnov, A.V.
AU - Agustsson, R.B.
AU - Boucher, S.
AU - Gavryushkin, D.I.
AU - Hartzell, J.J.
AU - Hoyt, K.J.
AU - Murokh, A.Y.
AU - Villabona, T.J.
ED - Petit-Jean-Genaz, Christine
ED - Kim, Dong Eon
ED - Kim, Kyung Sook
ED - Ko, In Soo
ED - Schaa, Volker RW
TI - GaN Class-F Power Amplifier for Klystron Replacement
J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016
C1 - Busan, Korea
T2 - International Particle Accelerator Conference
T3 - 7
LA - english
AB - The vacuum-tube-based RF amplifiers are relatively inefficient and becoming obsolete as the RF world has been progressively converting to solid state technology. Currently, the JLAB upgrade program requires 340 amplifiers capable of 8 kW CW at 1497 MHz while operating at more than 55-60% efficiency to replace their klystrons. Here we explore the possibility of a klystron replacement employing high electron mobility packaged GaN transistors applied in an array of Class-F amplifiers. The inputs and outputs of the many modules needed to make a complete amplifier are connected via precise, in-phase, low-loss, broadband, combiners-dividers. We describe early prototypes of the amplifiers as well as the combiners-dividers and discuss the design features and challenges of such a scheme. This approach can be applied to other national facilities and also for replacement of the klystrons in Middle Energy Electron-Ion Collider which requires about 1.8 MW CW power in total to be produced at 952.6 MHz frequency including 2x12.5 kW power for "crabbing" and 0.53 MW for electron cooling.
CP - Geneva, Switzerland
SP - 583
EP - 585
KW - klystron
KW - vacuum
KW - electron
KW - operation
KW - controls
DA - 2016/06
PY - 2016
SN - 978-3-95450-147-2
DO - 10.18429/JACoW-IPAC2016-MOPMY037
UR - http://jacow.org/ipac2016/papers/mopmy037.pdf
ER -