Cavity-Compton Regular Meeting design report summary 1st Nov. 2006 H.Shimizu

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 !?

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

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

Looks so unstable. 　→ Need some counter blocks.

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]

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

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 .

X-axis constraint Could obtain just only a trivial condition

Y-axis constraint The needed mass could be fixed.

Height : h = 0.23[m] Estimate with M ～ 420kg Density of Pb : 11340 kg/m^3 Assume 0.4×0.4 square block Height : h = 0.23[m]

cf.

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

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 △ △

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

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