Minutes of the Mar 17, 2005 US ROD meeting

Compiled by Lenny
Both Ryan and Jim were wearing bright green shirts but it was too early in California for Guinness.

Follow up on action items

  1. The dryer for the UCSB compressed air system has not yet arrived.

  2. Both FNAL and UCSB are reading module DCU's. The CCU DCU is a
    different story and we are waiting on Wim to introduce this
    in the root file.
    Addition from Ryan: I looked at one of Yuri's new root
    files (presumably made with LtStruct 24) and I see some DCU values
    in the Environment directory. These are probably the DCU values out
    of the CCU that we wanted to look at.

  3. One box is complete and the second box is being wired. Will
    send to UCSB as soon as possible.

  4. Frederick confirmed the failure of the reset command to reach
    rods in the FNAL SR system but other than that there has not
    been much progress.

  5. UCSB did try out the DefAna program and noted that it functions
    but still needs work. Apparently DefAna appends plots to the
    root file, but this is causing root files to become corrupted.
    Javier is looking into this problem.

  6. Jim has not yet started talking to JT about scripting the
    comparison between ARCS and rod data.

  7. Noise studies in the UCSB MR system are on hold pending
    work on their chiller system.

  8. Both sites are reading currents from the CAEN supplies in
    the SR system. UCSB has not given up on the use of
    electrometers although FNAL does not seem to have interest
    in this possibility?!

  9. Ryan and Jim agreed on a change to the SR scenario - to take
    pedestals at the beginning without HV based on a suggestion
    from Patrick - but Ryan still needs to implement this; then
    Jim should double check the final scenario.

UCSB

Lots of work on their MR cooling system: For the moment they will ignore the problem with the
leak in the chiller. Jim will ship SS quick-connects
to FNAL if this has not already been done.

Yuri relayed a suggestion from Paul that some zinc should
remain in the system as a sacrificial element. Paul should
specify how the zinc should be introduced and monitored.

Still working on SR cooling and will not test the recently
assembled DS rod until this is complete.

UCSB has not yet received additional fiber bundles; FNAL
received 4. Confusion as to how many were originally
requested. We want 24: 12 at FNAL and 12 at UCSB. Cost
may be an issue and we may need to settle for less, but
this should be made explicit.

FNAL

Has not yet received their dryer-filter cartridge.
All 20 assembled rod frames have been in the MR system as some point
and thus, with one or two exceptions, won't be included in
initial shipment.

Ryan: Along with Ricardo discovered a jumper error in the
readout of the Si1 thermister. See this email. Confirmed by Duccio, who
has promised a fix by tomorrow. We will most likely
need to implement the correction on rods in our possession.
Yuri: Testing version 24 with the idea of better understanding
header errors. There is a known bug in version 24 and Wim
will soon release version 25. There will be a different
version (26?) for experts who want greater debugging
capability.

Using DirectFEC instead of server access to avoid freezes
in version 24. Noted coincidentally that this also reduces
the frequency of header errors.