Differences between revisions 1 and 37 (spanning 36 versions)
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← Revision 37 as of 2017-07-12 11:20:07 → ⇥
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|| ||||||||<style="text-align:center">TM ||||||||<style="text-align:center">IM ||
||Suspension ||coil ||magnet ||coil-magnet ||coil driver ||coil ||magnet ||coil-magnet ||coil driver ||
||MCi/e/o (Type-C) ||40 turns ||NdFeB || || || || || || ||
||PR2/3/M (Type-Bp) ||600 turns ||SmCo 6mm dia, 3mm thick ||0.129 N/A at max|| || || || || ||
||BS (Type-B) ||600 turns ||SmCo 2mm dia, 3mm thick ||0.129 N/A at max|| || || || || ||
||SR2/3/M (Type-B) ||600 turns ||SmCo 2mm dia, 5mm thick ||0.129 N/A at max|| || || || || ||
||ITM/ETM (Cryopayload) ||600 turns(?) 500turns(?) ||SmCo(?) 2mm dia, 2mm thick ||??? || || || || || ||		 ||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([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2124|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''' ||100 turns, 17 Ohms (measured at room temp; estimated to be 0.6 Ohms for cryogenic) ||SmCo(?) 2mm dia, 2mm thick ? ||0.0015 N/A at max (measured at room temp with 88turns) ||low power ||
||'''IM''' ||600 turns, 57 Ohms (measured at room temp; estimated to be 2 Ohms for cryogenic) ||SmCo(?) 2mm dia, 2mm thick ? ||0.015 N/A at max (measured at room temp with 585turns) ||low power(with R65 and R97 700Ohm) ||
||'''Marionette''' ||600 turns, 57 Ohms (measured at room temp; estimated to be 2 Ohms for cryogenic) ||SmCo(?) 5mm dia, 13mm thick ? ||0.45 N/A at max (measured at room temp with 585turns) ||low power(with R65 and R97 700Ohm) ||
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BS TM: SmCo 2mm dia, 3mm thick BS IM: SmCo 10mm dia, 10mm thick == Coil Drivers ==
 * TAMA coil driver has 50 Ohm, 20 mA/V. EL2099, 440 mA at max. Summary by Koji Arai is [[http://tamago.mtk.nao.ac.jp/tama/ifo/www_suspension_install_status/coil_property.html|here]].
 * Low Power Coil Driver ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3507|JGW-D1503507]]) has 7.8 kOhm at DC (1.258 kOhm at high frequency; pole at 50Hz, zero at 312 Hz), 0.128*1.33 mA/V at DC (voltage gain of 1.33 is applied in the driver). AD8671, 10 mA at max.
 * Modified Low Power Coil Driver (for Type-A IM and Marionette) has 1.4 kOhm at DC (724 Ohm at high frequency; pole at 161Hz, zero at 312 Hz), 0.714*1.33 mA/V at DC (voltage gain of 1.33 is applied in the driver). AD8671, 10 mA at max.
 * High Power Coil Driver ([[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3503|JGW-D1503503]]) has 80 Ohm, 12.5 mA/V at DC. OPA548, 3 A at max.
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PRs TM: SmCo 6mm dia, 3mm thick PRs IM: SmCo 10mm dia, 10mm thick == Heat ==
 * Heat generated by coils for Type-A cryopayload is 2.2 mW at maximum
   * 0.6 Ohm * (0.128*1.33 mA/V * 10 V)^2 * 4 coils + 2 Ohm * (0.714*1.33 mA/V * 10 V)^2 * 6 coils + 2 Ohm * (0.714*1.33 mA/V * 10 V)^2 * 6 coils = 2.2 mW
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SRs TM: SmCo 2mm dia, 5mm thick SRs IM: SmCo 10mm dia, 10mm thick

== Coil Drivers ==		 == Related Documents ==
 * Actuator Noise Modeling Report [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3453|JGW-T1503453]]
 * BS Actuator Design (including design for SRs and PRs) [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=4450|JGW-T1504450]]
 * OSEM Coil/Magnet/Flag Calculation [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3239|JGW-T1503239]]
 * Magnetic noise calculation for BS (and ETM/ITM, PRM/SRM) [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=4459|JGW-T1504459]]
 * Actuator design of KAGRA cryogenic payload [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5938|JGW-G1605938]]

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

100 turns, 17 Ohms (measured at room temp; estimated to be 0.6 Ohms for cryogenic)

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

0.0015 N/A at max (measured at room temp with 88turns)

low power

IM

600 turns, 57 Ohms (measured at room temp; estimated to be 2 Ohms for cryogenic)

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

0.015 N/A at max (measured at room temp with 585turns)

low power(with R65 and R97 700Ohm)

Marionette

600 turns, 57 Ohms (measured at room temp; estimated to be 2 Ohms for cryogenic)

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

0.45 N/A at max (measured at room temp with 585turns)

low power(with R65 and R97 700Ohm)

Coil Drivers

  • TAMA coil driver has 50 Ohm, 20 mA/V. EL2099, 440 mA at max. Summary by Koji Arai is here.

  • Low Power Coil Driver (JGW-D1503507) has 7.8 kOhm at DC (1.258 kOhm at high frequency; pole at 50Hz, zero at 312 Hz), 0.128*1.33 mA/V at DC (voltage gain of 1.33 is applied in the driver). AD8671, 10 mA at max.

  • Modified Low Power Coil Driver (for Type-A IM and Marionette) has 1.4 kOhm at DC (724 Ohm at high frequency; pole at 161Hz, zero at 312 Hz), 0.714*1.33 mA/V at DC (voltage gain of 1.33 is applied in the driver). AD8671, 10 mA at max.

  • High Power Coil Driver (JGW-D1503503) has 80 Ohm, 12.5 mA/V at DC. OPA548, 3 A at max.

Heat

  • Heat generated by coils for Type-A cryopayload is 2.2 mW at maximum

    • 0.6 Ohm * (0.128*1.33 mA/V * 10 V)2 * 4 coils + 2 Ohm * (0.714*1.33 mA/V * 10 V)2 * 6 coils + 2 Ohm * (0.714*1.33 mA/V * 10 V)^2 * 6 coils = 2.2 mW

KAGRA/Subgroups/VIS/ActuatorDesign (last edited 2017-07-21 12:13:39 by YutaMichimura)