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Comment:
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Deletions are marked like this. | Additions are marked like this. |
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== Type-C (TAMA) suspension == | = Type-C (TAMA) suspension = |
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=== iKAGRA === | == iKAGRA == |
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For the three mirrors of mode cleaner, PO(pick-off) type; MC_i, MC_e, MC_o with the mirror thickness of about 3cm, were installed. | === MC mirrors === Mode cleaner suspension are used even after the iKAGRA. PO(pick-off) type; MC_i, MC_e, MC_o with the mirror thickness of about 3cm, were installed. === Temporary mirrors === |
Type-C (TAMA) suspension
- Type-C suspension is a small double pendulum with intermediate mass passively damped by eddy current damping. Some of the type-C suspensions were once used for TAMA300, originally designed by K. Arai in 1990s. So type-C suspension is sometimes called as TAMA-type suspension.
iKAGRA
In 2017, 5 Type-C suspensions were installed in iKAGRA.
In the final iKAGRA configuration, 7 mirrors were suspended and 6 of them were Type-C.
MC mirrors
Mode cleaner suspension are used even after the iKAGRA. PO(pick-off) type; MC_i, MC_e, MC_o with the mirror thickness of about 3cm, were installed.
Temporary mirrors
The others were TM(test mass) or RM type; ETMX, ETMY with the mirror thickness of about 6cm. The last one is coming from CLIO, the size of the BS mirror was 4cm in thickness and 15cm in diameter.
Work log about 2 iKAGRA ETMs is here.
- ETM Transfer function
- long term drift
bKAGRA
- Two suspensions used at the X/Y ends, are used as IMMT1 and IMMT2 for bKAGRA.
Drawings
- Magnet and standoff fixture jig