PAC09 - List of Authors (Constance, B.)

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

Constance, B.

Paper	Title	Page
WE6PFP077	Beam Test Results with the FONT4 ILC Prototype Intra-Train Beam Feedback System	2676
	P. Burrows, R. Apsimon, C.I. Clarke, B. Constance, H. Dabiri Khah, A.F. Hartin, C. Perry, J. Resta-López, C. Swinson JAI, Oxford G.B. Christian ATOMKI, Debrecen A. Kalinin STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
	We present the results of beam tests of the FONT4 ILC prototype intra-train beam feedback system. The system comprises a stripline BPM, a fast analogue BPM signal processor, a custom FPGA-based digital feedback board, a high-power fast-response drive amplifier, and a stripline kicker. The hardware was deployed at the Accelerator Test Facility at KEK. Trains comprising three electron bunches were extracted from the ATF damping ring, with bunch spacing c. 150ns. The feedback loop was closed by measuring the position of bunch 1 and correcting bunches 2 and 3. We report the performance of the feedback, including gain studies, the correction dynamic range, latency measurement, and quality of the beam position correction. The system achieved micron-level bunch stabilisation with a latency of c. 140ns.
TH6REP074	Development of a Fast Micron-Resolution Beam Position Monitor Signal Processor for Linear Collider Beam-Based Feedback Systems	4126
	P. Burrows, R. Apsimon, C.I. Clarke, B. Constance, H. Dabiri Khah, A.F. Hartin, C. Perry, J. Resta-López, C. Swinson JAI, Oxford G.B. Christian ATOMKI, Debrecen A. Kalinin STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
	We present the design of prototype fast beam position monitor (BPM) signal processors for use in inter-bunch beam-based feedbacks for linear colliders and electron linacs. We describe the FONT4 intra-train beam-based digital position feedback system prototype deployed at the Accelerator test facility (ATF) extraction line at KEK, Japan. The system incorporates a fast analogue beam position monitor front-end signal processor, a digital feedback board, and a fast kicker-driver amplifier. The total feedback system latency is less than 150ns, of which less than 10ns is used for the BPM processor. We report preliminary results of beam tests using electron bunches separated by c. 150ns. Position resolution of order 1 micron is obtained.
FR1RAI03	ATF2 Commissioning	4205
	A. Seryi, J.W. Amann, P. Bellomo, B. Lam, D.J. McCormick, J. Nelson, J.M. Paterson, M.T.F. Pivi, T.O. Raubenheimer, C.M. Spencer, M.-H. Wang, G.R. White, W. Wittmer, M. Woodley, Y.T. Yan, F. Zhou SLAC, Menlo Park, California D. Angal-Kalinin, J.K. Jones STFC/DL/ASTeC, Daresbury, Warrington, Cheshire R. Apsimon, B. Constance, C. Perry, J. Resta-López, C. Swinson JAI, Oxford S. Araki, A.S. Aryshev, H. Hayano, Y. Honda, K. Kubo, T. Kume, S. Kuroda, M. Masuzawa, T. Naito, T. Okugi, R. Sugahara, T. Tauchi, N. Terunuma, J. Urakawa, K. Yokoya KEK, Ibaraki S. Bai, J. Gao IHEP Beijing, Beijing P. Bambade, Y. Renier, C. Rimbault LAL, Orsay G.A. Blair, S.T. Boogert, V. Karataev, S. Molloy Royal Holloway, University of London, Surrey B. Bolzon, N. Geffroy, A. Jeremie IN2P3-LAPP, Annecy-le-Vieux P. Burrows OXFORDphysics, Oxford, Oxon G.B. Christian ATOMKI, Debrecen J.-P. Delahaye, D. Schulte, R. Tomás, F. Zimmermann CERN, Geneva E. Elsen DESY, Hamburg E. Gianfelice-Wendt, M.C. Ross, M. Wendt Fermilab, Batavia A. Heo, E.-S. Kim, H.-S. Kim Kyungpook National University, Daegu J.Y. Huang, W.H. Hwang, S.H. Kim, Y.J. Park PAL, Pohang, Kyungbuk Y. Iwashita, T. Sugimoto Kyoto ICR, Uji, Kyoto Y. Kamiya ICEPP, Tokyo S. Komamiya, M. Oroku, T.S. Suehara, T. Yamanaka University of Tokyo, Tokyo A. Lyapin UCL, London B. Parker BNL, Upton, Long Island, New York T. Sanuki Tohoku University, Graduate School of Science, Sendai A. Scarfe UMAN, Manchester T. Takahashi Hiroshima University, Graduate School of Science, Higashi-Hiroshima A. Wolski Cockcroft Institute, Warrington, Cheshire
	ATF2 is a final-focus test beam line that attempts to focus the low-emittance beam from the ATF damping ring to a beam size of about 37 nm, and at the same time to demonstrate nm beam stability, using numerous advanced beam diagnostics and feedback tools. The construction is well advanced and beam commissioning of ATF2 has started in the second half of 2008. ATF2 is constructed and commissioned by ATF international collaborations with strong US, Asian and European participation.
	Slides