LENA DOCUMENTS

LENA Documents

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Documentation about the status of LENA that may affect longterm gain issues can be found here.
This document contains background notes on the MCP Plateau Curves obtained in the laboratory
and during flight. Also discussed are issues to do with status of the optics power supply, the
collimator power supplies, and how their settings may affect the data. Plots of the data are
also available.

Information necessary to convert from control voltages (as used in the lab), to decimal or hex settings
as commanded during flight. Information is given for the Start and Stop MCP HV P/S, the +ve and
-ve Collimator P/S, and the Optics p/s.

Lena States contains two sheets:
1) "History MCP levels" contains all (or most) of the times and instrument settings when significant
events took place that may have resulted in a change of the operating configuration for LENA. (Also
included are the times MCP plateau curves were obtained).
2) The second sheet "Plateau Curve Plots" has all the MCP plateau curve data that was obtained
for LENA, including that obtained in the Laboratory in 1999.

Listing of times the Sun signal was in and out of the LENA field-of-view.

Documentation of LENA uploaded commands can be found here

Procedure for Bringing LENA Back Up After Safing

LENA Hex Input/Output Conversion Chart

LENA Programmer's Reference Manual September 10, 2004

LENA Spin Diagram

LENA field-of-view map

LENA User Guide (PDF 350 KByte)

Ion outflow events from the IMAGE LENA instrument starting at instrument turn-on, 18 December 2001, PDF Version (11 KB)

Proposal for LENA Image Distortion Recovery, 05 December 2001 PDF Version (1 MB)

LENA Powerup Procedure, 19 January 2001, Text Version (3 KB)

LENA Calibration Summary, 07 December 2000, PDF Version (5 KB)

Lena State Log, to 23 May 2003

Simplified Procedure for LENA Testing, 31 January 2000, PDF Version (12 KB)

LENA Instrument Specification Requirements, 22 November 1999, PDF Version (4 KB)

Software Specification Document for the Low Energy Neutral Atom (LENA) Imager, August 1999, Rev 1 Chng 0, PDF Version (136 KB)

LENA Performance Requirements - Responses, 2 June 1999, PDF Version (4 KB)

IMAGE Low Energy Neutral Atom (LENA) Instrument Thermal Control, February 1999, PDF Version (12KB)

IMAGE Low Energy Neutral Atom (LENA) Instrument Thermal Balance Test Report, February 1999, PDF Version (40KB)

IMAGE Instrument Specification for the Low Energy Neutral Atom Imager (LENA), October 1998 PDF Version (156 KB)

Dose Requirement for the LENA Instrument on IMAGE, 25 November 1997 PDF Version (36 KB)

Please send any questions/comments to: Thomas W. Vollmer
Last revised: 14 February 2005