Ikeda, H.

Paper	Title	Page
TUOCM02	X-ray Monitor Based on Coded-aperture Imaging for KEKB Upgrade and ILC Damping Ring	1029
	J. W. Flanagan, H. Fukuma, S. Hiramatsu, H. Ikeda, K.-I. Kanazawa, T. Mitsuhashi, J. Urakawa KEK, Ibaraki J. P. Alexander CLASSE, Ithaca M. A. Palmer Cornell University, Laboratory for Elementary-Particle Physics, Ithaca, New York G. S. Varner UH, Honolulu, HI
	We present here design considerations for an x-ray monitor for high-resolution (a few um) and fast response (sub-nanosecond) for beam profile measurements to be used at an upgraded KEKB and/or ILC damping ring. The optics for the monitor are based on a technique borrowed from x-ray astronomy, coded-aperture imaging, which should permit broad-spectrum, low-distortion measurements to maximize the observable photon flux per bunch. Coupled with a high-speed digitizer system, the goal is to make sub-bunch-length, turn-by-turn measurements of beam profile and position.
	Slides
TUPC092	An Application for Beam Profile Reconstruction with Multi-wire Profile Monitors at J-PARC RCS	1272
	H. Sako, S. Hiroki, K. Yamamoto JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken H. Ikeda Visual Information Center, Inc., Ibaraki-ken H. Takahashi JAEA, Ibaraki-ken
	J-PARC RCS is commissioned since October 2007. In the early stage of RCS commissioning, Multi-Wire Profile Monitors (MWPM's) are most important beam monitors to measure positions and profiles of beam orbit in the injection line from LINAC. A MWPM consists of either a horizontal or a vertical wire plane. Each wire plane consists of several wires which has a tilt angle, and a wire scatters H- or proton beams and induced current in the wire is detected. A wire plane moves at a small step in the perpendicular direction to the wires and scans a beam profile. A complex analysis procedure and geometrical description is developed to reconstruct a beam profile from a MWPM. Beam profiles have been measured at MWPM's in the injection line and the H0 beam dump line.