| Version |
$Revision: 1.3 $ |
| Last Update |
$Date: 2001/11/08 14:46:10 $ |
| HRC CCB Status |
not reviewed |
Number: HRC-C-003
Type: Constraint
Original Date: 5/20/96
Subsystem: HRC
Subject: HRC High Voltage Power Sequence
Source: OP05 Comments (5/16/96)
CRL Statement:
HRC high voltages commands must be applied in a specified sequence:
-
When Raising HV: Bottom MCP HV step then Top MCP HV step
-
When Lowering HV: Top MCP HV step then Bottom MCP HV step
and issued at a limited rate: not to exceed 10 steps every 30 seconds
for step levels higher than 50.
CRL Rationale/Justification:
The HRC sensitivity to high voltage gradients is derived from the HRC design.
CRL Impact:
Inappropriate application of high voltage gradients will damage the HRC
MCP HV.
Recommended Action:
Incorporate into the Systems and Operations Procedures, with ASC providing
the inputs.
$Log: hrc-c-003.html,v $
Revision 1.3 2001/11/08 14:46:10 juda
HTML "href" tag edits to convert to soft links
Revision 1.2 1998/04/27 13:49:37 juda
Added Version table
Page modified 1998 March 16
-
Supplied sequence and rate specifications - removed TBDs
Page created 1998 March 4 - Based on 30 Jan 98 release of OP05
Dr. Michael
Juda
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 70
Cambridge, MA 02138, USA
Ph.: (617) 495-7062
Fax: (617) 495-7356
E-mail: mjuda@cfa.harvard.edu