The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Bazzano, G. AU - Nenzi, P. AU - Picardi, L. AU - Ronsivalle, C. AU - Vadrucci, M. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Characterization of Automatic Frequency Control systems for S-band Proton LINAC "TOP-IMPLART" J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The TOP-IMPLART (Intensity Modulated Proton Linear Accelerator for RadioTherapy) proton linear accelerator is under development at ENEA-Frascati. It is composed by a 7 MeV, 425 MHz injector followed by a sequence of 2997.92 MHz accelerating modules. Four 10 MW klystrons will be used to power all high frequency structures up to a beam energy of 150 MeV. The first section, consisting of 4 SCDTL modules (7 to 35 MeV), is operational at low repetition rate (up to 50 Hz). Whereas beam acceleration is effective even without closed loop control, to ensure high beam current stability the resonance frequency variation must be kept for each SDCTL module within few kHz. This is achieved implementing an automatic frequency control (AFC) loop that detects structure detuning caused by thermal drifts and produce an error signal fed to a tuning motor. A prototype of an AFC custom solution, derived from a medical electron linac, has been tested on TOP-IMPLART accelerator. This was originally designed for magnetron frequency tuning with much larger frequency span. Other AFC systems with different components have been evaluated in order to reach the high required resolution. PB - JACoW Publishing CP - Geneva, Switzerland SP - 701 EP - 704 KW - DTL KW - controls KW - proton KW - linac KW - detector DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-TUPAF018 UR - http://jacow.org/ipac2018/papers/tupaf018.pdf ER -