Beams Document 3272-v1

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Two Devices for HINS

Document #:
Beams-doc-3272-v1
Document type:
Talk
Submitted by:
Camille M. Ginsburg
Updated by:
Camille M. Ginsburg
Document Created:
18 Dec 2008, 15:56
Contents Revised:
18 Dec 2008, 15:56
Metadata Revised:
18 Dec 2008, 15:56
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Abstract:
We will give updates on the fast chopper and the 325 MHz vector modulators for HINS.

A fast chopper capable of kicking single 2.5 MeV H- bunches spaced at 325 MHz, at rates greater than 50 MHz is needed for the Fermilab High Intensity Neutrino Source (HINS). Four 1.2 kV fast pulsers, designed and manufactured by Kentech Instruments Ltd., will drive a 0.5 m long meander made from a copper plated ceramic composite. Test results showing pulses from the first 1.2 kV pulser and meander results will be presented.

One of the goals of the low energy 60 MeV section of the HINS H- linac is to demonstrate that a total of ~40 RF cavities can be powered by a single 2.5 MW, 325 MHz klystron. This requires individual vector modulators at the input of each RF cavity to independently adjust the amplitude and phase of the RF input signal during the 3.5 ms RF pulse. Two versions of vector modulators have been developed; a 500 kW device for the radiofrequency quadrupole (RFQ) and a 75 kW modulator for the RF cavities. High power tests showing the vector modulator phase and amplitude responses will be presented.

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