Fast Shutter High Current Pulser Main Circuit Board

Document #:

LIGO-D1300780-v6

Document type:

D - Drawings

Abstract:

A circuit to supply high current pulses to the OMC Fast Shutter. This system protects the OMC photodiodes in the event of an IFO loss of lock optical transient.

Files in Document:

• Fast Shutter Schematic and Board Layout (PDF) (FastPulse_v6.pdf, file is not accessible)
• bill of materials in Excel format (FastPulse_v5_BOM.xls, file is not accessible)

Other Files:

• Altium Project Files (Zipped) (FastPulse_v6 (8-25-2016 10-46-11 AM).zip, file is not accessible)
• odb++ files (FastPulser_odb_v4.zip, file is not accessible)
• zipped Gerber Files and Pick and Place for Board Manufacture (FastPulser_v4.zip, file is not accessible)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Final Design
• Sensing and Control

Authors:

• Zhenhua Shao
• Rich Abbott

Keywords:

Pulser

Notes and Changes:

Version 6 shows two components added to control the unexpected in-vacuum undamped motion. The series 20 ohm resistor (Radd1) provides the damping. The UF4001 diode to ground (Dadd1) clamps the reverse polarity transient from terminating the applied drive early.

Some unchanged files were copied over from the last revision. The circuit board is unchanged at this time, but if a revision is made to the circuit board, it would be good to incorporate the new v6 damping and clamping parts into the PCB

Referenced by:

• LIGO-E1300819-v2: ISC HAM6 Fast Shutter Hardware Chain
• LIGO-T1300906-v2: HAM6 Fast Shutter Electro-mechanical Requirements
• LIGO-T1400186-v1: Fast Shutter Electronics Design Notes
• LIGO-D1400078-v2: ISC Fast Shutter Driver Chassis