(cf. TMT?E-ELT?~2?/?????????)

1
?26????????????, 2012?6?9?, ????
????????????
? ?? ???????? ????? ???????????
2
?????????
170??
?????
???????
??
1200??
????
??

• ??23?/????9?/?
• (cf. TMT?E-ELT?2?/?????????)

3
?????????
170??
???????
??
12000??
??

• Cranfield???????????????????

4
Cranfield??????

• E-ELT???????????
• ???????????1 mm rms????????????????????

(rms)
5
Cranfield??????

• ???????????????????(??????????)????????10????????
  ??SSD?????

?????
???????
6
Cranfield??????

• ????????????????????20?????

?????
?????
???
1.5 m capacity 3.22.11.8 m (12 tonnes)
7
?????????

• ????????????????SSD???

8
SSD?????

• SSD?????????????
• ????????SSD????????????????SSD????????????????????
  ????
• ????????????????????????

9
Cranfield????

• E-ELT?????(??1.45m????)???
• ?????1 mm???????20 hr
• ????5.4 mm p-v?????Ra 100200 nm
• SSD?? lt 10 mm(???13 mm??????)

10
Cranfield?????
Cranfield? ?????
????? 680 1,200
???? 5.4 mm p-v 1 mm p-v
???? 200 nm Ra 120 nm Ra
SSD?? lt 10 mm 9 mm lt
????? 20 hr 160 hr

• ??????????(50 hr???????)???SSD?????(?????23???)

11
????????????

• ???????????(N2C-53U)????????????
• ????????????????
• ?????????????????
• ????????(SSD???????)

12
Backup Slide
13
??????????

• ?????????????????????????20?????????

14
??????????

• 1500lt???????????????????????(10 mm????????OK)
• ????200 mm/rev.???????????

?????NbF1?????
?????1200(180 nm)
???????????????????
200 mm2000 rpm 400 mm/min. ???????????64
hr/pass? ???????
15
??????????

• Zerodur??????????????????????SSD????????????????

????????????
?????????
?????? MPa
?????
?????
?????????
????p-v nm