Design and performance of a high resolution, low latency stripline beam position monitor system
Physical Review Accelerators and Beams American Physical Society (APS) 18:3 (2015) 032803
Simulation of density measurements in plasma wakefields using photon acceleration
Physical Review Accelerators and Beams American Physical Society (APS) 18:3 (2015) 032801
Design, testing and performance results of a high-resolution, broad-band, low-latency stripline beam position monitor system
6th International Particle Accelerator Conference, IPAC 2015 (2015) 1136-1138
Abstract:
A high-resolution, low-latency beam position monitor (BPM) system has been developed for use in particle accelerators and beamlines that operate with trains of particle bunches with bunch separations as low as several tens of nanoseconds, such as future linear electronpositron colliders and free-electron lasers. The system was tested with electron beams in the extraction line of the Accelerator Test Facility at the High Energy Accelerator Research Organization (KEK) in Japan. The fast analogue front-end signal processor is based on a single-stage RF down-mixer. The processor latency is 15.6 +-0.1 ns. A position resolution below 300 nm has been demonstrated for beam intensities of around 1 nC, with single-pass beam.First experimental results with the CLIC drive Beam phase feedforward prototype at the CLIC test facility CTF3
Proceedings of the 4th International Beam Instrumentation Conference, IBIC 2015 (2015) 193-196
Abstract:
The two-beam acceleration scheme envisaged for CLIC will require a high degree of phase stability between two beams at the drive beam decelerator sections, to allow efficient acceleration of the main beam. There will be up to 48 such decelerator sections for the full 3 TeV design, and each decelerator section will be instrumented with a feed-forward system to correct the drive beam phase to a precision of 0.2 degrees at 12 GHz relative to the main beam, using a kicker system around a four-bend chicane. A prototype system has been developed and tested at the CLIC Test Facility (CTF3) complex, where the beam phase is measured upstream of the combiner ring and corrected with two kickers in a dog-leg chicane just upstream of the CLEX facility, where the resulting phase change is measured. This prototype is designed to demonstrate correction of a portion of the CTF3 bunch train to the level required for CLIC, with a bandwidth of greater than 30 MHz, and within a latency constraint of 380 ns as set by the beam time-of-flight through the combiner ring complex. A description of the hardware will be given and initial results from the first phase of the experiment will be presented.First results from beam tests of the CLIC drive beam phase feedforward prototype at CTF3
6th International Particle Accelerator Conference, IPAC 2015 (2015) 1139-1142