NRAO Home  >  Green Bank  |  Wiki Topic:    GB > Pennarray > MustangProjectPlan > WeeklyMeetingNotes > MeetingNotes14Apr08

Changes | Index | Contents | Search | Go

Mustang Software Support Meeting 14-Apr-08

• Attendees:
• Agenda (standing):
• Meeting Notes:
• Priority of work (priority unchanged):
• Known staff unavailability:

Attendees:

• Whitehead, Mason, Bloss

Agenda (standing):

• Status of working MRs
• Questions on working MRs (if any)
• Other working status
• Issues (if any)
• Upcoming work
• Select/verify day for next week's meeting

Meeting Notes:

• Brian will contact Simon concerning logistics for MUSTANG in the UPenn lab (done)
• Housekeeping and CLEO docs to be sent to development team (done)
• Reviewed the remaining MRs in MUSTANG Meta-MR and detailed next steps for each.
  • Crate Data Monitoring – In prioritized work below
  • Cryogenics Control – Defined by Simon’s housekeeping document and ready for development of one or more MRs.
  • Cryogenics monitoring – Defined by Simon’s housekeeping document and ready for development of one or more MRs.
  • Higher Level Functionality: Automatic Detector Biasing – Algorithms exist to do biasing function, but a review and revision cycle is desired. Brian and Simon to discuss and Marty to advise on the timing for this work after program plan development (below).
  • Higher Level Functionality: Automatic SQUID Tuning – (includes Relock and Crate Soft Restart) Algorithms exist to do tuning function, but a review and revision cycle is desired. Brian and Simon to discuss and Marty to advise on the timing for this work after program plan development (below).
  • Engineering Interface – Ron has preliminary design specs for CLOE screens. Amy to write a “tab” into ASTRID for astronomer functions after Data Monitoring development is complete
• Marty to draft a program plan with rough dates and dependencies for review later in the week.
• Ray and Mark to develop a cryogenics simulator per the email circulated 14-Apr (attached)

Priority of work (priority unchanged):

1. Detector Bias curves – Preliminary tests on MUSTANG before removal from telescope were successful but MUSTANG was not fully cooled; Final tests will be conducted when MUSTANG is cold and available at UPenn.
2. YGOR/Spider installation – Ray to contact Simon to sort out details of logging on to Spider in UPenn and install YGOR.
3. Addition of low-level messages for errors –Development complete and code checked in. Final tests will be conducted on ‘Green’.
4. Data monitoring – Ready to code.
5. Two changes are planned for ‘Bias File’ (which saves tuning information):
   • Add DAC values to Bias Files
   • Reorder Bias File for easier review and editing. Order by columns instead of items
   • Part of MR that covers ‘load configuration’ – edits and approvals will be needed.

Known staff unavailability:

• Brian: Apr 28 - Apr 30 (scientific meeting & collaboration); May 5-10 (Vacation); June 23-27 (Vacation); July 14-18 (scientific meeting); Aug 7-16 (scientific meeting).

SddCalendar

*******************************

Martin,

Mark and I have discussed the creation of a cryogenics simulator to aid in the development of the housekeeping software. Such a simulator would be a state machine that would receive commands through the M&C GPIB interface (simulated at a lower level than the manager) and would then set itself to the proper state. There are a few good reasons to implement this:

* It would serve as an excellent vehicle to understanding the operating principles of the Mustang cryogenics system.

* It would expose any deficiencies in the documentation on the cryogenics system

* It would speed up the development of the actual housekeeping software, by limiting the need for spider

* It would facilitate troubleshooting problems with the housekeeping software in the future.

What we need is time allocated to do this. I believe that the time we are talking about is in the range of 40-80 hours to actually develop the simulator. (This does not include time spent understanding the cryogenics system, since that time would have to be spent anyway before any design or implementation of housekeeping system could take place.) The time actually spent on the simulator will hopefully return many dividends during the development and testing of the housekeeping software.

Ray

************************

-- MartyBloss - 15 Apr 2008