EMCAL report to Temple

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EMCAL report to Temple

• Y. Kubota
• 5/27/04

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Outline

• Intro definition of staged
• Project flow
• Critical path and schedule
• Staged 50 EMCAL will be ready to be installed
  229 days before it needs to be ready for 2009
  summer shutdown installation.
• Labor, cost profiles
• Installation
• Needs 270 man-years of labor in each of the two
  installation shutdown periods.
• CD-1 recommendations and responses
• Risk management
• and of CMS interference cancel and has little
  effects on our bottom line.

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Intro

• 10,100 PWO crystals of 28?28?220 mm3
• Tyvek wrapped
• PMT 5-7 stages, gain 3000, requiring 7 HVs
  provided separately (no local voltage divider)
  daisy chaining 100 of them.
• Signal cable to FEB 2-4m
• Support structure has cells for individual
  crystals.
• Light pulser/optical fibers to test system and
  calibrate crystals.

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Staged

• 1st stage has half as many crystals (5000)
• Typical efficiency (compared to the full
  detector) is 60.
• Fill a range of radii from 40 to 120 cm.
• Inside of 40 cm is not as useful as this area
  because the background near the beam pipe. Low
  Pt tracks are often rejected in analyses.
• Outside 120 cm, the rate of photons in this area
  is lower.
• More crystals will be installed as long as their
  delivery is on schedule.

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Project Flow
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Default schedule
229 days float
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Critical Paths Schedule floats
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Labor Profile
FY06
FY07
FY09
FY08
FY05
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Cost

• Total 12.6M base - 16.8M w/ contingency (33.6)
• MS 10M base
• Labor 2M
• 400k increase from CD-1 (Chinese crystal
  production accelerated)

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Cost Profile
FY05
FY06
FY07
FY08
FY09
FY08
FY09
FY06
FY07
FY05
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Change from CD-1
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OBrowser view of cost
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Installation in C0

• Before shutdown 2009
• Load 5000 crystals (PMTs attached) and test.
• Shutdown 2009
• Move the support structure from the Assembly Hall
  to C0.
• Install light pulsers and front-end electronics
  (FEB) near the detector.
• Connect optical fibers, signal cables and HV
  cables.
• Connect FEBs to DAQ.
• Shutdown 2010
• Load crystals (PMTs attached) and test.
• Connect optical fibers, signal cables and HV
  cables.

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Installation labor

• Before 2009 shutdown
• 200 man-days
• 200 man-days of physicists to install crystals
• 2009 shutdown 4 months
• 270 man-days
• 70 man-days physicists
• 80 man-days technicians
• 25 man-days ME
• 63 man-days EE
• 2010 shutdown 3 months
• 275 man-days
• 200 man-days Physicists
• 75 man-days technicians

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CD-1 recommendations

• Explore ways to arrive at a schedule with
  comfortable float (gt6 months) by working with
  BTeV Management and Installation Integration
  group.
• Staged installation of EMCAL is our answer to
  this recommendation. We now have a minimum of
  191 business days ( 9 months) of floats.
• Add an Installation Engineer to the project.
• More engineering is being added as a shared
  resource to the Project Office.
• Add US collaborators
• Yes, we are trying.

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Risk - mitigation

• Acquisition of crystals with only a few
  manufacturers can be risky.
• CMS narrowed the vendor field to one fairly early
  in their process.
• We plan to keep at least two vendors in the race.

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If CMS is in our way