MapperAssembly Update - PowerPoint PPT Presentation
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Title:
MapperAssembly Update
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You've seen mechanical assembly largely done. Al. B. recently completed design of limit switch ... Some controls being assembled by K. Knickerbocker (Al's tech) ... – PowerPoint PPT presentation
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Title: 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)
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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.
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