bKAGRA Suspensions Actuator Design Summary

suspension and stage

coil

magnet

coil-magnet

coil driver

MCi/e/o (Type-C) TM

41 turns by default (some are 40 turns?), ~2.5 Ohms(klog#2124)

NdFeB 1mm dia, 5mm thick

0.0014 N/A at max

TAMA

IM

-

-

-

-

IMMT1/2 (Type-C) TM

39 turns ?

NdFeB 2mm dia, 5mm thick

high power

IM

-

-

-

-

PR2/3/M (Type-Bp) TM

600 turns

SmCo 6mm dia, 3mm thick

0.129 N/A at max

high power

IM

600 turns

SmCo 10mm dia, 10mm thick

1.26 N/A at max

high power

BS (Type-B) TM

600 turns, ~11 Ohms

SmCo 2mm dia, 3mm thick

0.0138N/A at max

low power

IM

600 turns, ~13 Ohms

SmCo 10mm dia, 10mm thick

1.25 N/A at max

low power

SR2/3/M (Type-B) TM

600 turns

SmCo 2mm dia, 5mm thick

0.0225 N/A at max

low power

IM

600 turns

SmCo 10mm dia, 10mm thick

1.26 N/A at max

low power

ITM/ETM (Cryopayload) TM

88 turns, ~70 Ohms (at room temp.)

SmCo(?) 2mm dia, 2mm thick ?

0.0015 N/A at max (at room temp.)

low power

IM

585 turns, ~60 Ohms (at room temp.)

SmCo(?) 2mm dia, 2mm thick ?

0.015 N/A at max (at room temp.)

low power(with R65 and R97 700Ohm)

Marionette

585 turns, ~60 Ohms (at room temp.)

SmCo(?) 5mm dia, 13mm thick ?

0.45 N/A at max (at room temp.)

low power(with R65 and R97 700Ohm)