Analog Electronics

Meeting

KAGRA/Subgroups/AEL/Meetings/20121109

Circuits for subsystem

VIS

Reference

• D1201253 Test Circuit of Voice Coil Driver

• D1201251 Presentation for MIF meeting

• D1201255 LVDT-Actuator Driver Electronics

Common Circuits or related things

DC Power Supply

• Bipolar 24 Volt power supply

  • 24V power supplier / selection report

• Connector and cable

  • Cables for DC24V selection report

• +15V regulator (ultra low noise)

• High voltages

  • QPD vias voltage (In TAMA case, 180V)

  • Coil driver (LIGO High-Voltage type: >140V)

  • PZT driver (DC >100V or AC power supply)

RF electronics

• Oscillator

  • LCGT/subgroup/Electronics/SG010M3R0GB_test_sheet.pdf

  • CLIO related

  • Wenzel 500 of TAMA

    • reference: LO signal distribution for TAMA RSE

• RF Photo detector

  • N. Mio JPCS, 122, (2008) 012014

  • H. Grote RSI, 78, (2007), 054704

• RF QPD detector

• Demodulator

• EOM driver

Audio Frequency electronics

• As a general rule, differential signal transfer should be applied.
• Dsub 9-pin connector and cable

• Digital front-end circuits

  • Anti-Alias / Anti-Imaging filter
  • Differential signal buffer Amp.
  • Whitening / De-whitening filter

• Coil driver

• AF photo detector for DC readout

• Optical lever sensor

• Ultra-Low-Noise Amp.

  • NF SA-200F3

Safety Control

• Mechanical shutter for photo detector protection

• Interlock switch