aLIGO OMC Piezo Driver Chassis

Document #:

LIGO-D1300485-v2

Document type:

D - Drawings

Abstract:

A chassis providing the drive signals for the low voltage piezo and high voltage piezo associated with the OMC cavity. This chassis provides the following functions:
1. High voltage drive used for locking OMC cavity length.
2. Low voltage drive, upon which the dither signal is superimposed.
3. A shutter function as provided by causing a step change in the low voltage piezo voltage. This knocks the OMC out of lock, and protects the DCPDs from IFO lock loss pulses when exposed to light through the OMC transmission.
4. A trigger input sensitive to logic level transitions that causes the low voltage circuitry to produce a step change in piezo voltage.

Files in Document:

• PDF Version (omc_HV_LV_piezo_v2.pdf, file is not accessible)

Other Files:

• Visio Product Perspective (omc_HV_LV_piezo_v2.vsd, file is not accessible)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Final Design
• Sensing and Control

Authors:

• Rich Abbott
• Dean Schaetzl

Keywords:

OMC

Notes and Changes:

Second HV driver board added

Related Documents:

• LIGO-D1300487: aLIGO OMC Piezo Driver Chassis Rear Panel

Referenced by:

• LIGO-T1300611-v1: High/Low Voltage Piezo Driver Chassis Test Procedure
• LIGO-E1600247: AS Port Fast Shutter Protection
• LIGO-E1300896: aLIGO, ISC, OMC, Design, Electrical
• LIGO-E1300521: aLIGO, ISC, OMC, Electrical Components