RF Sources Ralph Pasquinelli PXIE Program Review January 16-17, 2013
Outline • List of RF systems for PXIE • Basic Block Diagram • RFQ 162.5 MHz, 2 Bruker 75 kW solid-state • Coupler test stand 162.5 MHz, 10 kW Thomson solid-state amp • Coupler test stand 325 MHz, 10 kW Bruker solid-state amp • Separator cavity at 243.75 MHz • 325 MHz RF R&D at BARC, India • Milestones PXIE Review, Ralph Pasquinelli 2
PXIE RF Power Sources Total of 22 Power Amplifiers PXIE Beam Current 1 mA • RFQ: 2 75 kWatt solid-state 162.5 MHz • Bunchers: 3 4 kWatt solid-state 162.5 MHz • HWR: 8 4 kWatt solid-state 162.5 MHz • SSR1: 8 4 kWatt solid-state 325 MHz • Separator cavity: 1 4 kWatt solid-state 243.75 MHz PXIE Review, Ralph Pasquinelli 3
Basic RF Block Diagram Protection � Cavity � LLRF � AMP � PXIE Review, Ralph Pasquinelli 4
RFQ Amplifier Front view Rear view Solid-state 75 kW RFQ amplifier PXIE Review, Ralph Pasquinelli 5
RFQ Amplifier Each RF unit Delivers approx 7 kW RF modules and Power supplies Are water cooled For enhanced reliability Front view Rear view PXIE Review, Ralph Pasquinelli 6
Refurbished 162.5 MHz VHF TV transmitter Thomson 10 kW Solid-state amp for testing HWR couplers at Argonne PXIE Review, Ralph Pasquinelli 7
Solid-State Amps 10 kW 325 MHz coupler test stand solid-state amplifier PXIE Review, Ralph Pasquinelli 8
Solid-State Amps 325 MHz 10 kW Solid-state amp for coupler test stand @ MDB PXIE Review, Ralph Pasquinelli 9
Separator Cavity Utilizes a 243.75 MHz (1.5 x RFQ frequency) 4 kWatt Solid-state amplifier Driving a transverse deflecting cavity for Measuring extinction ratio of adjacent buckets Created by the fast MEBT bunch by bunch chopper. PXIE Review, Ralph Pasquinelli 10
PXIE RF Distribution @CMTF PXIE Review, Ralph Pasquinelli 11
325 MHz @ BARC, Mumbai India Combined Output Efficiency Gain comments power (W) (DC/RF) (dB) % 1 3000 69.76 21.5 Short term testing 2 3200 71.27 21.5 Short term testing Four ¡RF ¡amplifier ¡modules ¡have ¡been ¡tested ¡up ¡to ¡900 ¡Wa8 ¡(max). ¡Then, ¡ ¡they ¡ are ¡operated ¡at ¡750 ¡W ¡and ¡800 ¡W, ¡combined ¡to ¡get ¡3 ¡kW ¡and ¡3.2 ¡kW ¡respecHvely. ¡ RFSS / IADD / Physics Group / BARC/India Sep05, 2012
Milestones PXIE Review, Ralph Pasquinelli 13
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