ATF2 weekly meeting

Wednesday 16 Sept 2009, 14:00 → 16:30 Asia/Tokyo

Minutes ( draft, correction on red, 9/22) d090916.html

International phone/webex meeting

1 Specification/parameters of SC Q and cryogenics (20 min+50min for discussion)

Speaker: Dr Brett Parker (BNL)

Slides atf2_meeting_16sep09.pdf

2 Subjects for SC FF magnet system at ATF2

Speaker: Mr Nobuhiro Kimura (KEK)

Slides ATF-FF-090916-01.pdf ATF-FF-090916-01.ppt

3 Phase stability in the QBPM system

Speaker: Dr Stewart Boogert (Royal Holloway, University of London)

Slides atf2-bpm-16092009.key.tgz atf2-bpm-16092009.pdf

4 Emittance reduction by a SC wiggler in the ATF-DR

Speaker: Dr Yannis PAPAPHILIPPOU (CERN)

Slides ATF09.pdf ATF09.ppt

KEK site meeting (Japanese)

5 Progress of Shintake monitor work

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

Slides Progress_of_Shintake_Monitor_Work.pdf Progress_of_Shintake_Monitor_Work.ppt

Site: KEK ATF LC Container Time: 16:00(JST) ~ Participants: T. Tauchi, N. Terunuma, J. Urakawa, T. Okugi, S. Kuroda, K. Kubo, P. Bambade, S. Boogert, A. Aryshev, T. Yamanaka, Y. Kamiya(WebEX) * Modification of the IP target insertion stage C: Support of the stage using screws should be three. Micrometers won't be able to bear the preassure from vacuum * Detector Interlock C: When the PMT signals are used to interlock the HV to the detector, You should use a discriminator rather than charge ADC reading. If the gate signal to the ADC is not adjusted, it is probable to miss the high current signal. Q: If the local machine is stopped by some troubles, HV state cannot be changed and screen monitors cannot be inserted? A: In this case, they can be movable by changing the EPICS record forcibly. C: In practice, PLC should be used instead of a PC to make the system reliable. Q: How long does it take to stabilize HV after swtching on? A: If the HV is not so high, it takes 5 minitues or so. C: If screen monitors and wire scanners are used often, that period becomes a waste of time. If you can prepare a movable lead block, it will be better than HV interlock. (HV interlock should be also prepared.) * Laser Replacement C: Is one day enough to set up a new laser? If a company can make it, you should prepare plenty of time (from the afternoon of September 24) for laser set up.