Mike's CXC Memos

HRC Detection Efficiency

• HRC UV/Ion Shields - September 9, 1994 (postscript)
• New HRC UV/Ion Shields - May 14, 1996 (postscript)
• HRC MCP Photocathode Yield - October 27, 1994 (postscript)
• HRC-I QE measurements - January 10, 1997 (postscript)
• A Simple Model for the QE of CsI Coated MCPs - May 13, 1997 (postscript)

HRC Event Positions

• HRC Position Logic - July 9, 1996 (postscript)
• Crossed-Grid Charge Detector Model - December 3, 1996 (postscript)
• HRC-I Spatial Linearity Test G-IHI-SL-1.001 and the FAM Step Size - September 22, 1997
• HRC-S Coordinate Discontinuities - July 15, 1998
• HRC Degapping Corrections - August 24, 1998
• HRC-S u,v to LSI Coordinate Mapping
• HRC Tap Corrections - April 17, 2000 (postscript)
• Improving Chandra High Resolution Camera event positions via corrections to crossed-grid charge detector signals, SPIE Proceedings 4140, 155, August 2000 (postscript)
• Amplifier Scale Correction Scheme - February 28, 2001
• Identifying Events with Ringing Tap Signals - March 20, 2001
• Comparison of AMP_SF Correction Methods - August 8, 2001
• An Improved AMP_SF Correction Scheme - November 26, 2001
• HRC-I Degap Lookup Table - August 1, 2005
• HRC-I Rotation Angle - February 10, 2006
• HRC-I Degap Lookup from Capella Data - April 19, 2006
• HRC-I Degap Lookup from Capella Data - 2007 - July 6, 2007

HRC Event Times

• HRC Time Tagging - February 5, 1998 (postscript)
• HRC Deadtime and Telemetry Saturation - June 18, 1999 (postscript)
• Time Tagging HRC Rates in NIL Mode - May 12, 1999 (postscript)
• Out-of-sequence HRC Time Tags - October 6, 1999 (postscript)
• HRC FIFO Full Event Timing - May 1, 2000
• HRC Event Time Tag Investigation - May 19, 2000
• Telemetered vs Processed Events - December 7,2001
• HRC-S Double Pulse Fraction - May 7, 2002 - updated June 27, 2002

Operations

• Overview of ASC Orbital Verification Plans - August 8, 1995 (postscript)
• HRC and Gratings Operations Management Concepts July 9, 1996 (postscript)
• OAC Thread Rehearsal Debrief Notes - April 18, 1998
• LETGS 0th Order Blocking - October 7, 1998
• HRC Flight Command Sequences
• HRC Higher-level Sequences
• HRC Contingency Procedures
• HRC Operations Constraints

HRC On-orbit Modeling and Performance

• HRC Response to the SXRB - July 27, 1995 (postscript)
• Bright Sources and the HRC - November 2, 1995 (postscript)
• HRC Point Source Constraints - May 28,1997 (postscript)
• Time History of the HRC Background - March 22, 2001
• HRC Rates and High Solar Activity - May 21, 2001
• Blur from Residual Errors in HRC Event Position Reconstruction - November 21, 2001
• Characteristics of the On-Orbit Background of the Chandra X-ray Observatory High Resolution Camera, SPIE Proceedings 4851, August 2002 (postscript)
• RADMON via HRC Shield Rates - January 28, 2003
• Raw HRC Antico Rate v EPHIN Flux - December 7, 2004
• Monitoring the UV/Ion Shield Health

HRC Anomalies

• HRC -Y Shutter Anomaly
• Secondary-Science Telemetry Corruption
  • HRC Secondary Science Anomaly on Day 2005:349
  • Secondary Science Byte Shift

EPHIN

• Monitoring EPHIN Degradation
• EPHIN Leakage Currents
• 5EPHINT Threshold
• EPHIN Integral Channel PHAs
• EPHIN +27V-rail Supply Current-Limit Episodes

LETG

• LETG verification/calibration plans at MPE - November 21, 1994 (postscript)

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

Last modified: Mon Jul 9 09:54:26 EDT 2007