MapperAssembly Update

1
Mapper/Assembly Update

• Robert Bradford
• University of Rochester
• November 28, 2007

2
Mapper Status

• Mechanical
• Youve seen mechanical assembly largely done.
• Al. B. recently completed design of limit switch
  and camera mounting HW.
• Pieces in fabrication (Department Shop)
• Some controls being assembled by K. Knickerbocker
  (Als tech).
• Last mechanical piece is Pb cones for radioactive
  source
• Currently working to finalize spec.

3
Mapper Status

• DAQ/Motion control hardware
• Delivered DAQ computer 2 weeks ago
• Ordered required video cards
• Looking for VME controller
• Want to take data with current card
• Paul has found damaged (but fixable) card.
• Al will configure this week.
• PMTs
• Have received 1 new FEB from Paul.
• Paul starting to measure PMT gains

4
Mapper Status

• DAQ/Motion control software
• Offline group met with Al and has begun to
  negotiate format of output data.
• Has started to make requested changes
• I wrote mapper cable/channel maps (Docdb 2072)
• Mapper software has to know which scintillator
  read out by which electronics channel
• Accounts for fiber routing in planes (OD
  assemblies), mapping of clear fiber cables, all
  cable connections and the ODU weave within PMT
  box.
• Establishes some conventions.
• Will write similar map for TP soon

5
Mapper Cones

• Geometric Constraints
• Available space from what Bob designed.
• Kathy G. has asked for 3 of Pb shielding in
  cone.
• From Howard
• Make spot size size of EM shower
• Too large spot will smear effects of localized
  non-uniformities

6
Mapper Cones - Continued

• Previous manual tests indicate larger cone angle
  is better.
• Ran test comparing narrower against wide cone.
• Larger cone was better able to define shape of
  transverse scan faster, less uncertainty
• However, did not analyze older data on cone size
  for effects of localized nonuniformities.

7
Mapper Cones - Continued

• Have identified many non-uniformities in FMP
  planes.
• Accounts for much of what we see in
  Leos/Jaewons analysis
• Want to localize and scan problematic point with
  2 different cones to determine if larger cone
  less sensitive (and extent)

8
Other Mapper Issues

• Offline code appears to be making good progress
• Need to further manual testing
• Need more data for development of offline code.
  Want to verify earlier results.
• Prioritizing needs of new DAQ
• Some HW from old DAQ needed for transition.
• Temporarily holding up this effort
• Hope to have something working by collaboration
  meeting.

9
Module Assembly TP outfitting

• Biggest task for TP preparation.
• Iterating with Bob on updated drawings of hall
  layout.
• Need to negotiate final layout with J. Kilmer.
• Using techs to handle most outfitting tasks
• Clean-up, organization, assembly of benches,
  procure material from FNAL
• Will use PPD techs to build scintlilator tables.

10
Assembly continued.

• Starting to working on
• Phones
• Getting printers
• Removal of magnetic coils
• Having Dan test candidate adhesives for Pb.
• Identified 3 suitable candidates a few months
  ago
• Having Dan test
• Strength
• Handling (smell, etc).

11
Installation

• Tasks resulting from TP workshop
• Cable routing workshop with Paul and Steve D.
  Dec. 11
• Configuration tracking for assembly
• Ordering material to barcode cables, planes, etc.
• Have everything but label media.
• Working on database interface
• Prefer to use CRL form designed by D. Boehnlein
• Heidi prefers Excel spreadsheet.