TY - GEN
T1 - New on-line gain drift compensation for resonant current monitor under heavy heat LOAD
AU - Duperrex, P. A.
AU - Gandel, M.
AU - Kiselev, D.
AU - Lee, Y.
AU - Müller, U.
PY - 2010
Y1 - 2010
N2 - For high intensity beam operation (3mA, 1.8MW) in the PSI cyclotron, a new current monitor for proton beams has been installed during the 2009 maintenance period. This current monitor is an actively cooled reentrant cavity with its resonance tuned to the 2nd RF harmonic (101 MHz). The resonator is behind a graphite target and the heavy heat load due to the energy deposition of the scattered particles induces some large gain drifts. An innovative scheme to measure on-line the actual resonator gain and to correct the current was developed. This compensation method is based on the measurement of two side-band pilot signals 52 kHz off the RF frequency. This paper will present the measurement scheme and the achieved performances during beam operation.
AB - For high intensity beam operation (3mA, 1.8MW) in the PSI cyclotron, a new current monitor for proton beams has been installed during the 2009 maintenance period. This current monitor is an actively cooled reentrant cavity with its resonance tuned to the 2nd RF harmonic (101 MHz). The resonator is behind a graphite target and the heavy heat load due to the energy deposition of the scattered particles induces some large gain drifts. An innovative scheme to measure on-line the actual resonator gain and to correct the current was developed. This compensation method is based on the measurement of two side-band pilot signals 52 kHz off the RF frequency. This paper will present the measurement scheme and the achieved performances during beam operation.
UR - http://www.scopus.com/inward/record.url?scp=84886904230&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84886904230
SN - 9789290833529
T3 - IPAC 2010 - 1st International Particle Accelerator Conference
SP - 1122
EP - 1124
BT - IPAC 2010 - 1st International Particle Accelerator Conference
T2 - 1st International Particle Accelerator Conference, IPAC 2010
Y2 - 23 May 2010 through 28 May 2010
ER -