388
Comment:
|
1064
|
Deletions are marked like this. | Additions are marked like this. |
Line 1: | Line 1: |
== Type-C suspensions == | == Type-C suspension == |
Line 3: | Line 3: |
Type-C suspensions are double pendulums, some of which were once used for TAMA300. | Type-C suspension is a relatively small double pendulum with intermediate mass passively damped with eddy current damping. Among the big suspensions used in KAGRA, type-C is the smallest one. Some of the type-C were once used for TAMA300, originally designed by K. Arai in 1990s. So type-C suspension is sometimes called as TAMA-type suspension. |
Line 8: | Line 8: |
3 PO type; MC_i, MC_e, MC_o and 2 TM or RM type; ETMX, ETMY. | In the final iKAGRA configuration, 6 mirrors are suspended and 5 of them are Type-C. Three are PO(pick-off) type; MC_i, MC_e, MC_o with the mirror thickness with about 3cm, and 2 are TM(TestMass) or RM type; ETMX, ETMY with the mirror thickness of 6cm. |
Line 12: | Line 13: |
=== toward bKAGRA === | === Toward bKAGRA === [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/iKAGRAbKAGRA|Memo by Yamamoto-san]] |
Line 16: | Line 19: |
[[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Type-C/Design2016|Design change for new suspensions]] |
Type-C suspension
- Type-C suspension is a relatively small double pendulum with intermediate mass passively damped with eddy current damping. Among the big suspensions used in KAGRA, type-C is the smallest one. Some of the type-C were once used for TAMA300, originally designed by K. Arai in 1990s. So type-C suspension is sometimes called as TAMA-type suspension.
iKAGRA
Five TAMA-type suspensions were used for iKAGRA.
In the final iKAGRA configuration, 6 mirrors are suspended and 5 of them are Type-C. Three are PO(pick-off) type; MC_i, MC_e, MC_o with the mirror thickness with about 3cm, and 2 are TM(TestMass) or RM type; ETMX, ETMY with the mirror thickness of 6cm.Work log about 2 iKAGRA ETMs is here.
Toward bKAGRA