ATF2 weekly meeting

Wednesday 22 Jul 2009, 14:30 → 16:30 Asia/Tokyo

Draft Minutes 7/27 d090722.html

14:30 → 15:50 International phone/webex meeting

14:30 Study of the calibration of individual strip-line electrodes

(pedestal, > non-linear response) with and without firing the kicker + any further > analysis / improvements of the electronics

Speaker: Mr Yves Renier (LAL)

Slides stripline_electronics.pdf

14:50 Discussion of beam schedule in this October and November

Installations, hardware checkouts and machine studies It is necessary for planning travel to KEK for oversea's colleagues.

15:30 → 16:30 KEK site meeting (Japanese)

15:30 Progress of Shintake monitor work

Speakers: Mr Masahiro OROKU (Tokyo Univ.), Mr Takashi Yamanaka (The University of Tokyo)

Slides

• Beam_Time_Simulation.pdf
• Beam_Time_Simulation.ppt
• Progress_of_the_Shintake_Monitor_Work_090722.pdf
• Progress_of_the_Shintake_Monitor_Work_090722.ppt

Time: 17:30(JST) - Site: KEK ATF LC container Participants: Tauchi, Terunuma, Okugi, Kuroda, Naito, Yamanaka, Kamiya(WebEx), Oroku(WebEx) * Plan to enlarge the present IP laser hut to contain a new IP-BSM laser - Power supply: Current one can be used by switching - Cooling water: No additional chiller inspect whether the present chiller can be used for both lasers - Optical table: Bigger table can be used. - After the expansion of the laser hut, it is inevitable to share the same laser hut with MONALISA group. - It is desired to separate the laser hut. (prepare a setup to divide the hut) * Decision of Beam Optics - Beam current: higher is better - Repetition rate: faster is better Naito-san will try to prepare the hardware for 3 Hz operation. - Horizontal beam size: don't want to focus further (last time: sigma_x = 10 um) It was observed the background become larger during Q-scan using QD0 - Vertical beam size: - At first, 4..58 deg crossing angle, 6.7 um fringe pitch will be used in the interference mode - to observe the fringe pattern by the Compton photon signal, less than 1 um beam size is desired. * New laser - specification of the laser is fixed. - it will be delivered to KEK end of September.