Differences between revisions 5 and 13 (spanning 8 versions)

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?)	NdFeB 1mm dia, 5mm thick	0.0014 N/A at max	TAMA
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	1.12 N/A at max	high power
BS (Type-B) TM	600 turns	SmCo 2mm dia, 3mm thick	0.0138N/A at max (*)	low power
IM	600 turns	SmCo 10mm dia, 10mm thick	1.12 N/A at max	low power
SR2/3/M (Type-B) TM	600 turns	SmCo 2mm dia, 5mm thick	N/A at max	low power
IM	600 turns	SmCo 10mm dia, 10mm thick	1.12 N/A at max	low power
ITM/ETM (Cryopayload) TM	600/500 turns(?)	SmCo(?) 2mm dia, 2mm thick	???	???
IM	???	???	???	???

(*) calculated using Mathematica code in JGW-T1503239

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 (1.3 kOhm above 312 Hz), 0.128 mA/V at DC. AD8671, 10 mA at max.
High Power Coil Driver (JGW-D1503503) has 73 Ohm, 13.6 mA/V at DC. OPA548, 3 A at max.

-  ⇤ ← Revision 5 as of 2016-04-21 17:19:15 → 
  Size: 1811
  Editor: YutaMichimura
  Comment:
+   ← Revision 13 as of 2016-09-08 13:23:40 → ⇥
  Size: 2268
  Editor: YutaMichimura
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
-||Suspension / Stage ||coil ||magnet ||coil-magnet ||coil driver ||
||MCi/e/o (Type-C) '''TM''' ||40 turns ||NdFeB 1mm dia, 5mm thick || 0.0014 N/A at max ||TAMA ||
+||suspension and stage ||coil ||magnet ||coil-magnet ||coil driver ||
||MCi/e/o (Type-C) '''TM''' ||41 turns by default (some are 40 turns?) ||NdFeB 1mm dia, 5mm thick ||0.0014 N/A at max ||TAMA ||
 Line 7:
-||BS (Type-B) '''TM''' ||600 turns ||Sm``Co 2mm dia, 3mm thick ||0.0313N/A at max ||low power ||
+||BS (Type-B) '''TM''' ||600 turns ||Sm``Co 2mm dia, 3mm thick ||0.0138N/A at max (*) ||low power ||
 Line 14:
+(*) calculated using Mathematica code in [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3239|JGW-T1503239]]
-Line 16:
+Line 17:
- * TAMA coil driver has 50 Ohm, 20 mA/V.
+ * 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]].
-Line 24:
+Line 25:
+ * 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]]