Post-grade student Kent Wootton under the direction of Dr. Mark Boland from the Australian Synchroton presented a poster featuring Agilent digitizers at IBIC in Japan 2 weeks ago. He kindly sent us a testimonial and pictures which summerizes his experience in Japan. Thanks to them for the contribution to this blog and on top of everything with the great success they obtain with their different papers at IBIC. Please click on read more to read Kent’s testimonial and discover the pictures.
Kent Wootton: The diagnostics team at the Australian Synchrotron presented a large body of work at the recent IBIC2012 conference in Tsukuba, Japan. I was a student lucky enough to present my beam instrumentation work. Measurement of the fastest particle beams is no trivial task, and so we needed the fastest possible acquisition and digitisation.
Particle beams in accelerators oscillate at resonant frequencies during their orbit. These
characteristic frequencies are referred to as the tunes, and in any storage ring, the measurement and control of betatron tunes is an integral part of optimising the stability and lifetime of the stored beam. At IBIC 2012, we presented a novel beam position measurement system exploiting the direct detection of synchrotron light – the intense light emitted by electrons at the Australian Synchrotron, and even by protons in the Large Hadron Collider (LHC) at CERN. The synchrotron light was coupled using fibre optics to high-speed metal-semiconductor-metal photodetectors in a custom-made, balanced RF biasing circuit.
Using a diamond of four fibres, horizontal and vertical betatron oscillations were observed. This is routinely observed in accelerators on a turn-by-turn basis, but the bandwidth of electrostatic pickups limits this to an acquisition rate of several MHz. The detection of optical pulses poses no such bandwidth problem. Using Agilent equipment, we were able to digitise signals at up to 8 GSa/s, and measure the tunes bunch-by-bunch.
IBIC2012 is the first in the new International Beams Instrumentation Conference series. It succeeds the Beams Instrumentation Workshop (BIW) and Diagnostics Instrumentation for Particle Accelerators Conference (DIPAC) series. With over 250 delegates, presenting my work here has been tremendously helpful. I’ve already had suggestions on new directions for my work, and new collaborations poking up! Our group has had a huge week, culminating with the announcement that Melbourne will host the next Asian region conference in 2015! We’re very proud that fast diagnostics equipment we have developed in Australia contributes to international projects like the LHC at CERN.Tags: particle beams