1. Cavity-Compton Regular Meeting design report summary
1st Nov H.Shimizu

2. Time Table for Our Exp. Installation during this summer shutdown
(our first plan)
→ have missed
Installation in the end of this year
(second option)
→ seems very hard
Installation during two week shutdown
on February. (sovereign !!!)
→ still not safety !?

3. Far Away from the Starting Point of real Exp.
Today’s topics
　○ Design report (CM calc.)
　○ New Laser inspection

19. Estimation was done including
○pumps (elbows)
○chamber (cavity also)
○laser
○lead blocks (barrier)

20. Looks so unstable.
　→ Need some counter blocks.

21. The center of mass estimation
Pump(1) : 50kg [-280,550]
Pump(2) : 50kg [130,640]
Chamber : 300kg [0,250]
Laser : 30kg [400,-400]
Lead-block : 110kg [600,-300]

22. Locate the cm inside of this area using some
counter lead-blocks

23. Our Game Two Assumptions ● Using ‘M’ kg lead as a counter block
Our Game Two Assumptions ● Using ‘M’ kg lead as a counter block ● Center of Counter mass [-50,-100] 　　　　　
Gx < 200 & Gy < 50
How many blocks ?
How to place ?
Check the stability itself .

25. X-axis constraint
Could obtain just only a trivial condition

26. Y-axis constraint
The needed mass could be fixed.

27. Height : h = 0.23[m] Estimate with M ～ 420kg
Density of Pb : kg/m^3
Assume 0.4×0.4 square block
Height : h = 0.23[m]

28. cf.

29. 10W Laser Property Test Wave Length → 1064nm Out-Put Power → 10W
Power Stability → <0.1%
Frequency → 357MHz
Polarization　　　　　　　　　　 → 500:1
Timing Jitter　　　　　　　　　　 → 0.4psec
Pulse Width → 12psec
M-Square → <1.1

30. 10W Laser Property Test Wave Length → 1064nm Out-Put Power → 10W
Power Stability → <0.1%
Frequency → 357MHz
Polarization　　　　　　　　　　 → 500:1
Timing Jitter　　　　　　　　　　 → 0.4psec
Pulse Width → 12psec
M-Square → <1.1 △ △

31. Need more progress to the ILC era
Conclusion
Still on a half way of R&D
February installation
Move to physical analysis ASAP.
Need more progress to the ILC era