Skeleton:%20Hardware%20Alignment%20for%20EMU%20meeting

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Skeleton Hardware Alignment for EMU meeting

• James N Bellinger
• 15-Mar-2009

2
Things to add

• Time estimates for repeating the work in May (and
  August)
• Time estimates for work TBD
• Transfer Lines
• Barrel
• Barrel to Endcap
• Pix from Barrel progress
• Stuff Ive forgotten in the skeleton

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What we Have Now

• Link on Plus side
• Some Link on Minus (serious disk misalignment!)
• Link to MABs
• Z for ME2,3,4, ME-2,3,4, ME1/2
• Z for ME1/3 about to be blessed
• Some barrel numbers

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Want pix of

• Marcus chamber tilts, updated w/ ME1/3
• Check
• Illustrative barrel Z variation w/ field
• Fit plots for ME1
• Check
• Fit plots for ME2
• Check

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Muon Endcap Hardware AlignmentPreliminary
Green Not blessed yet
lt?zME1/3gt -2.2 mm
Nominal CSC position
Nominal CSC position
CMS Side view
?
?
rglobal
?
?
?
?
lt?xgt 1.3mrad
?x 0
lt?xgt 3.9mrad
lt?xgt 3.7mrad
lt?xgt 3.4mrad
lt?xgt 3.5mrad
zglobal
?
?
lt?xgt 4.4mrad
lt ?xgt 4.4mrad
?
?
?
?
?
?
?x 0
lt?xgt 4.7mrad
lt?xgt 3.9mrad
lt?zME1/2gt -5.04 mm
lt?xgt 3.4mrad
lt?xgt 3.6mrad
lt?xgt 4.2mrad
lt?xgt 3.4mrad
lt?zME-1/2gt 5.94 mm
?
?
lt?zME2/1gt -12.58 mm
lt?zME-2/1gt 13.18 mm
lt?zME-3/1gt 12.60 mm
lt?zME-4/1gt 12.89 mm
lt?zME3/1gt -12.35 mm
lt?zME4/1gt -12.46 mm
lt?zME1/1gt -17.57 mm
lt?zME-1/1gt 16.73 mm
?
?
nom.
nom.
?
?
?
?
?
?
Pink Aligned by Tracker-Muon Link
system Blue Aligned by Muon Endcap Optical
System Red Not aligned yet
?
?
ME1/3,2/2,3/2 ?z-5 mm to IP globally
ME-1/3,2/2,3/2 ?z5 mm to IP globally
?
?
?
?
Not to scale
? Muon Endcap stations ?
ME2
ME3
ME4
ME-1
ME-2
ME-4
ME-3
ME1
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ME2 SLM 2-5 in Z with 10 measurements at B0T
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Laser hits on CCDs ME2 SLM 2-5 in Z at B0T
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Distancemeter and dists
DCOPS dowels
Chamber surface estimates
RedReal GreenSim
ME12 ASPD
IR target
MAB ASPD
ASPD P4
Animated
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In the pipeline

1. Some X/Y information for ME/- separately
2. Barrel muon
3. ME-1
4. Refit Endcap using relative X/Y info from step 1
5. Proof of principle linking MAB with Endcaps via
   Transfer Lines

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Hardware-dependant

• Minus side Link
• Disks so badly assembled that components couldnt
  talk to each other!
• MAB DCOPS X/Y
• End-to-end X/Y
• Better care assembling disks
• Requires some adjusting of the lasers

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Order of Tasks for Endcap

• Independent validation of data quality in all
  detectors
• Stand-alone reconstruction of SLMs and Transfer
  Lines
• When Link results are available Big Bang

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Barrel HW Geom
Endcap HW Geom
Bi weekly MWGR
DT StandAlone m align
AR vs. TK
surveytracks dr correction
CSC align w/cosmics
Adjust LD-
Close CMS
Full Link Geom _at_ 0T
Full Barrel HW Geom _at_ 0T
Full Endcap HW Geom _at_ 0T
weekly MWGR
Integrated HW Geom _at_ 0T
CRUZET S w w/o tracker
CRAFTS
Full Link _at_ B3.8T
Full Barrel HW Geom _at_ B3.8T
Full Endcap HW Geom _at_ B3.8T
Integrated HW Geom _at_ 3.8T
Integrated HW track-based Geom
LHC dev.
DT align with CRAFT2 cosmics
CSC align with CRAFT2 cosmics
collisions
DT align with collision tracks
CSC align with collision tracks
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Time Estimates

• IFF
• the disks were assembled with reasonable accuracy
  AND
• there were no major hardware failures
• THEN repeating the work with fresh data in May
  should be quickorder of a week or two (?)
• Doing it again in August should be very much
  easier

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But

• Some tasks will be done for the first time in
  May Transfer Line inclusion, for example.