EPAC08 - List of Authors (Kalinin, A.)

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Kalinin, A.

Paper	Title	Page
TUPC033	IP BPM Position Error at CLIC due to Secondary Emission from Beam-beam Backgrounds	1122
	A. F. Hartin, R. Apsimon, P. Burrows, C. I. Clarke, C. Perry, C. Swinson OXFORDphysics, Oxford, Oxon G. B. Christian ATOMKI, Debrecen B. Constance, H. Dabiri Khah JAI, Oxford A. Kalinin STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
	Beam-beam background impacts on the IP BPM are studied for the CLIC machine. The large number of coherent pairs ( 1.8×10⁸ charges per BPM strip per bunch crossing) for the CLIC-G default parameter set, potentially leads to a large secondary emission in the BPM strips. Detailed GuineaPig++ and Geant studies reveal, however, that the coherent pairs travel down the extraction line without significant secondary showering. Geant studies of the CLIC incoherent pairs show a flux of secondary emission two orders of magnitude less than that expected for the ILC 1 TeV high luminosity scheme. Since previous studies showed that FONT IP BPM signal distortion for the ILC was of no concern, then it can also be neglected at CLIC.
TUPC043	Towards Sub-micrometer Resolution of Single Bunch Strip Line BPM	1152
	A. Kalinin STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
	A high resolution single bunch BPM set-up is designed based on a strip line pickup. One of the BPM modifications developed is a Difference-Sum BPM. In this BPM, each strip line signal is converted into a three 600MHz square wave burst in a cascaded irregular strip line coupler. The Difference and Sum bursts produced by a hybrid junction are detected in a pair of synchronous detectors. The synchronous detector reference signals, and single-sample ADC triggers are manufactured from the Sum burst. The set-up and features of this BPM are presented. The BPM resolution was measured using a KEK ATF beam. For a bunch intensity above 10⁹ electrons the resolution is about 1 μm (for BPM effective aperture 1/5). With appropriate ADCs, this BPM can measure individual bunches at a rate of up to 50 MHz. The BPM latency to the ADC inputs is as low as 10 ns. High resolution and low latency together, make this BPM suitable for beam-based fast feedback/feed-forward systems.
THPC114	Design and Performance of a Prototype Digital Feedback System for the International Linear Collider Interaction Point	3245
	P. Burrows, B. Constance, H. Dabiri Khah, J. Resta-López JAI, Oxford R. Apsimon, P. Burrows, C. I. Clarke, A. F. Hartin, C. Perry, C. Swinson OXFORDphysics, Oxford, Oxon G. B. Christian ATOMKI, Debrecen A. Kalinin STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
	We present the design and preliminary results of a prototype beam-based digital feedback system for the Interaction Point of the International Linear Collider. A custom analogue front-end processor, FPGA-based digital signal processing board, and kicker drive amplifier have been designed, built, and tested on the extraction line of the KEK Accelerator Test Facility (ATF). The system was measured to have a base latency of approximately 140 ns, increasing to approximately 148 ns with the inclusion of real-time charge normalisation.
THPP004	EMMA - the World's First Non-scaling FFAG	3380
	T. R. Edgecock STFC/RAL, Chilton, Didcot, Oxon C. D. Beard, J. A. Clarke, C. Hill, S. P. Jamison, A. Kalinin, K. B. Marinov, N. Marks, P. A. McIntosh, B. D. Muratori, H. L. Owen, Y. M. Saveliev, B. J.A. Shepherd, R. J. Smith, S. L. Smith, S. I. Tzenov, E. Wooldridge STFC/DL/ASTeC, Daresbury, Warrington, Cheshire J. S. Berg, D. Trbojevic BNL, Upton, Long Island, New York N. Bliss, C. J. White STFC/DL, Daresbury, Warrington, Cheshire M. K. Craddock UBC & TRIUMF, Vancouver, British Columbia J. L. Crisp, C. Johnstone Fermilab, Batavia, Illinois Y. Giboudot Brunel University, Middlesex E. Keil CERN, Geneva D. J. Kelliher, S. Machida STFC/RAL/ASTeC, Chilton, Didcot, Oxon S. R. Koscielniak TRIUMF, Vancouver F. Meot CEA, Gif-sur-Yvette T. Yokoi OXFORDphysics, Oxford, Oxon
	EMMA - the Electron Model of Many Applications - is to be built at the STFC Daresbury Laboratory in the UK and will be the first non-scaling FFAG ever constructed. EMMA will be used to demonstrate the principle of this type of accelerator and study their features in detail. The design of the machine and its hardware components are now far advanced and construction is due for completion in summer 2009.