山本　均Hitoshi Yamamoto

東北大学Tohoku University

北京、十一月二十三日、二 00 六年Beijing, Nov 24, 2006

WWS Report

MDI Report

H. Yamamoto, Beijing 2006 2

WWS Charge

■ 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 R&D relevant to LC experimental programs, identify those that are vital or missing, and ensure peer review of R&D proposals.

■ Organize interregional meetings and workshops.

■ Report to ILCSC and ICFA on the matters above.

Worldwide Study on Physics and Detectors for LC

(http://blueox.uoregon.edu/~lc/wwstudy)

H. Yamamoto, Beijing 2006 3

WWS

co-chairs

organizationcommittee

SiD LDC GLDMDI R&D DCR

.....

panels detector concept groups

accelerator

GDE

J. Brau F. RichardH. Yamamoto

.....

MDI : machine detector interface

DCR: detector concept report

Cost

Worldwide Study on Physics and Detectors for LC

H. Yamamoto, Beijing 2006 4

SiD5 TeslaSilicon trackerW-Si ECAL

LDC4 TeslaTPCW-Si ECAL

GLD3 TeslaTPCW-Scint ECAL

3 'Major' Detector Concepts

H. Yamamoto, Beijing 2006 5

4th Detector Concept

• Dual-readout electro-magnetic calorimeter (scintillation+Cerenkov)• Triple-readout hadron calorimeter (scintillation+Cerenkov+neutron)• Double solenoid : No return yoke

H. Yamamoto, Beijing 2006 6

R&D Panel

■ Reviews ILC detector R&D status worldwide

■ Members C. Damerell (chair) + 8 others

■ R&D Panel Report http://physics.uoregon.edu/~lc/wwstudy

/R&D 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 R&D in Japan and US

H. Yamamoto, Beijing 2006 7

ILC detector R&D funds (next ~4years)

R&D Panel Report

(Salary not included)

Worldwide Study R&D panel report, 2006/1

As of Jan 2006

0

2000

4000

6000

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12000

k$

EU US Canada Japan Korea other

H. Yamamoto, Beijing 2006 8

ILC detector R&D funds (next ~4years)

R&D Panel Report

Worldwide Study R&D panel report, 2006/1

As of May 2006

0

2000

4000

6000

8000

10000

12000

k$

EU US Canada Japan Korea other

(Salary not included)

H. Yamamoto, Beijing 2006 9

Detector R&D Review Meetings

■ Purpose Improved communication leading to enhanced R&D

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 R&D 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 R&D

Editor: C. Damerell (R&D 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, R&D status. ~100 pages each.

Prepared for Bangalore LCWS, Feb 06:

GLDhttp://ilcphys.kek.jp/gld/documents/dod/glddod

.pdf

LDChttp://www.ilcldc.org/documents/dod/outline.pdf

SiDhttp://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 conceptsPhil 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 th

e 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 R&Ds 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

beam dumps

detectors

~25mmain linac

1 hall contains two IRs

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ILC configuration (500 GeVCM)

top view

side view

e- linac e+ linac

e+ source

Not to scale

e- injectione+ injection

e+ dumping ring

e- dumping ring

Current baseline (http://www.linearcollider.org/wiki/doku.php)

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

H. Yamamoto, Beijing 2006 16

MDI Panel: Detector Assembly

■ Detector assembled mostly on surface, 'CMS' style Time saving of 2~3 years Needed for the commissioning at t0 + 7yrs. Supported by MDI panel. CCR accepted as baseline.

H. Yamamoto, Beijing 2006 17

MDI Panel: Muon Spoiler

■ CCR proposes to reduce the thickness to 18m+9m 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 des

ign, integration/engineering design.

■ Feasibitliy study under way Push-pull task force (members: detector + accelerator) A report at GDE/ECFA meeting at Valencia + discussion se

ssion.

A possible way of switching2 detectors by A. Seryi

H. Yamamoto, Beijing 2006 20

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 corre

ction/documentation

■ 2007.2 Beijing GDE/ACFA meeting Release the final RDR

■ 2010 EDR (engineering document)

H. Yamamoto, Beijing 2006 21

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.

H. Yamamoto, Beijing 2006 22

Reducing #bunch by 1/2

■ Reduce #number bunch by 1/2 Reduce luminosity by 1/2

Cost saving of 2~3%

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).

H. Yamamoto, Beijing 2006 23

ILC Parameters

■ 1st phase Energy 200→500 GeV 500 fb-1in first 4 years of physics run Polarized e- (>80%)

■ 2nd phase Energy upgrade to ~1TeV 1000 fb-1in 3-4 years

■ Options eeeGiga-Z, WW, polarized e+

■ Will release 2nd report soon

(http://www.fnal.gov/directorate/icfa/LC_parameters.pdf 2003.9.30)

Parameter committee (charged by ILCSC, chair: Rolf Heuer)1st report:

H. Yamamoto, Beijing 2006 24

Detector Roadmap proposed by WWS

■ end 2007~ beginning 2008 Conceptual Design Report of potential detectors (~4?)

■ 2008 International Detector Advisory Group (appoined by ILCSC, recogni

zed by ICFA) reviews CDR and guides toward 2 detectors (not a selection of two out of ~4, rather, merging of 4)

■ 2009~2011 Detector EDRs developed.

To be discussed within the community

H. Yamamoto, Beijing 2006 25

Detector timeline by WWS

(2005.12) Acc.Baseline Configuration Document

Detector R&D 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)

Accelerator Detector

Backups

SiD LDC GLD

４ th