Organizing the Global Experimental Program

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WWS Report MDI Report
?? ? Hitoshi Yamamoto ???? Tohoku University
????????????00?? Beijing, Nov 24, 2006
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WWS Charge
Worldwide Study on Physics and Detectors for LC
(http//blueox.uoregon.edu/lc/wwstudy)

• Recognize and coordinate studies on whole
  detector concepts, and work toward interregional
  detector TDRs.
• Interface with GDE, especially on MDI issues.
• Keep a register of RD relevant to LC
  experimental programs, identify those that are
  vital or missing, and ensure peer review of RD
  proposals.
• Organize interregional meetings and workshops.
• Report to ILCSC and ICFA on the matters above.

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WWS
Worldwide Study on Physics and Detectors for LC
J. Brau F. Richard H. Yamamoto
co-chairs
organization committee
accelerator
GDE
.....
.....
DCR
Cost
MDI
RD
SiD
LDC
GLD
panels
detector concept groups
MDI machine detector interface DCR detector
concept report
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3 'Major' Detector Concepts
SiD 5 Tesla Silicon tracker W-Si ECAL
LDC 4 Tesla TPC W-Si ECAL
GLD 3 Tesla TPC W-Scint ECAL
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4th Detector Concept

• Dual-readout electro-magnetic calorimeter
• (scintillationCerenkov)
• Triple-readout hadron calorimeter
• (scintillationCerenkovneutron)
• Double solenoid No return yoke

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RD Panel

• Reviews ILC detector RD status worldwide
• Members
• C. Damerell (chair) 8 others
• RD Panel Report
• http//physics.uoregon.edu/lc/wwstudy/RD
  Report-final.pdf
• Urgent needs require 32M and 1870 man-years over
  next
• 3-5 years
• Established support over 3-5 years 15M and 1160
  man-years
• Helpful in efforts to increase funding for
  detector RD in Japan and US

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RD Panel Report
(Salary not included)
As of Jan 2006
Worldwide Study RD panel report, 2006/1
ILC detector RD funds (next 4years)
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RD Panel Report
(Salary not included)
As of May 2006
Worldwide Study RD panel report, 2006/1
ILC detector RD funds (next 4years)
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Detector RD Review Meetings

• Purpose
• Improved communication leading to enhanced RD
  programmes
• Format
• 1 day open 1 day closed 1 day reporting
• Associated with each ILC workshop
• Beijing (Feb 07) Tracking
• DESY (LCWS Jun 07) Calorimetry
• Fermilab (Oct 07) Vertexing
• Asia (spring 08) all else (PID, DAQ, Muon,
  etc.)
• Review committee Members
• RD panel external experts

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DCR Panel

• Edits Detector Concept Report (DCR)
• Physics
• Editors K. Moenig, A. Djouadi, M. Yamaguchi, Y.
  Okada,
• M. Oreglia, J. Lykken
• Concepts (based on Detector Outline Documents
  (DODs))
• Editors J. Jaros, A. Miyamoto, T. Behnke
• Required RD
• Editor C. Damerell (RD panel chair)
• Costs
• Editor COST panel
• typical detector
• DCR to be released with RDR 2007.2 (Beijing)

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DODs (Detector Outline Documents)

• Something like LOI (Letter of Intent) Physics
  performance, detector design concept, RD status.
  100 pages each.
• Prepared for Bangalore LCWS, Feb 06
• GLD
• http//ilcphys.kek.jp/gld/documents/dod/glddod.pdf
  
• LDC
• http//www.ilcldc.org/documents/dod/outline.pdf
• SiD
• http//hep.uchicago.edu/oreglia/siddod.pdf
• 4th
• http//www.physics.iastate.edu/getfiles/1965.pdf

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MDI Panel

• Members
• Chair H. Yamamoto
• LEP panel (Luminosity, Energy, Polarization)
• Wolfgang Lohmann, Tsunehiko Omori, Eric Torrence
• GDE
• Philip Bambade, Witold Kozanecki, Tom Markiewicz,
  
• Andei Seryi
• Detector concepts
• Phil Burrows, Karsten Buesser, Toshiaki Tauchi
  (...)
• Charge
• Maintain oversight of IR/MDI issues that are
  relevant both to accelerator and detectors and
  report to WWS and GDE Area Group. Organize joint
  MDI sessions.

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MDI Panel Crossing Angle

• 14 mrad 14 mrad crossing CCR (change control
  request)
• Advised WWS and CCB (change control board)
• Machine (cost etc.) and detector (SUSY search)
  issues
• Conclusion
• 'With this limited information, the MDI
  panel thinks that the 14mrad is acceptable as the
  baseline at this time. However, we would like to
  stress that the 2mrad crossing angle is clearly
  desirable than larger crossing angles for the
  slepton search, and RDs related to 2mrad should
  be encouraged.'
• CCR has been accepted as the baseline.

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14 mrad 14 mrad

• 2 14-mrad crossing IRs in a single hall

main linac
25m
beam dumps
1 hall contains two IRs
detectors
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ILC configuration (500 GeVCM)
Current baseline (http//www.linearcollider.org/wi
ki/doku.php)
e dumping ring
top view
e injection
e- injection
e source
side view
e- dumping ring
e linac
e- linac
Not to scale

• 2 IRs with 14 mrad crossing angle
• same z location
• Angle of two linacs 14 mrad

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MDI Panel Detector Assembly

• Detector assembled mostly on surface, 'CMS' style
• Time saving of 23 years
• Needed for the commissioning at t0 7yrs.
• Supported by MDI panel. CCR accepted as baseline.

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MDI Panel Muon Spoiler

• CCR proposes to reduce the thickness to 18m9m to
  5m (muon background will go up)
• Supported by MDI panel provided that the space
  for the original spoilers are kept.
• CCR accepted as baseline.

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MDI Panel CERN visit

• CERN LHC-ILC engineering forum (Oct 12,13 2006)
• Learn about surface assembly, push-pull
  possibility etc.
• Extremely important experiences
• Service cavern, air pads, safety issues etc.

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1 IR with 2 detectors (push-pull) ?

• Can save one entire beamline - a large cost
  saving
• But will it work?
• Historical/political issues, detector design,
  accelerator design, integration/engineering
  design.
• Feasibitliy study under way
• Push-pull task force (members detector
  accelerator)
• A report at GDE/ECFA meeting at Valencia
  discussion session.

A possible way of switching 2 detectors by A.
Seryi
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GDE Timeline

• 2006.11 Valencia GDE/ECFA meeting
• Final cost/design ? design is frozen
• 2006.12 SLAC internal cost review
• 2007.1 ILC MAC(machine advisory committee)
• RDR (reference design report) is presented after
  final correction/documentation
• 2007.2 Beijing GDE/ACFA meeting
• Release the final RDR
• 2010 EDR (engineering document)

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Major Change Controls

• Class-2 (major significance) change control
  requests so far
• Crossing angles 20mrad 2mrad ? 14mrad 14mrad
• accepted
• Positron dumping ring 2 rings ? 1 ring
• accepted
• Dumping rings end of linacs ? center
• accepted
• Cryomodule configuration, lInac length
• under review
• Push-pull (clearly class-2) and many others not
  submitted yet
• Need to freeze the design ? Interim Working
  Assumption (IWA) inlcudes push-pull in it.

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Reducing bunch by 1/2

• Reduce number bunch by 1/2
• Reduce luminosity by 1/2
• Cost saving of 23
• Upgrade to the original bunch possible
• Time line?
• Low-P parameter set could recover the luminosity
• Beam background?
• MDI panel advised WWS
• WWS sent a set of questions to GDE
• GDE dropped the proposal out of the interim
  working assumptions (IWA).

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ILC Parameters
Parameter committee (charged by ILCSC, chair
Rolf Heuer) 1st report
(http//www.fnal.gov/directorate/icfa/LC_parameter
s.pdf 2003.9.30)

• 1st phase
• Energy 200?500 GeV
• 500 fb-1in first 4 years of physics run
• Polarized e- (gt80)
• 2nd phase
• Energy upgrade to 1TeV
• 1000 fb-1in 3-4 years
• Options
• g g, ge-, e-e-, Giga-Z, WW, polarized e
• Will release 2nd report soon

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Detector Roadmap proposed by WWS
To be discussed within the community

• end 2007 beginning 2008
• Conceptual Design Report of potential detectors
  (4?)
• 2008
• International Detector Advisory Group (appoined
  by ILCSC, recognized by ICFA) reviews CDR and
  guides toward 2 detectors (not a selection of two
  out of 4, rather, merging of 4)
• 20092011
• Detector EDRs developed.

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Detector timeline by WWS
Accelerator
Detector
(2005.12) Acc.Baseline Configuration Document Detector RD report
(2006.2) Detector Outline Document (one for each detector concept)
(2007.2) Acc. RDR (Reference Design Report) DCR (Detector Concept Report one document)
LC site selection Acc. EDR 2010 Site selection 1yr Collaborations form Detector EDR (Engineering Design Report)
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Backups
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(No Transcript)
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SiD
GLD
LDC
4th