Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://zebu.uoregon.edu/~uochep/talks/talks04/news.pdf Äàòà èçìåíåíèÿ: Thu Dec 16 20:31:52 2004 Äàòà èíäåêñèðîâàíèÿ: Tue Oct 2 09:54:55 2012 Êîäèðîâêà: Ïîèñêîâûå ñëîâà: mdi

Workshop Introduction
I will try to summarize: How far we have come up to now Where we still need to go What should we focus on this week What will we need to accomplish in the coming year......and beyond

J. Brau - ALCPG Workshop, Victoria - July 28l, 2004

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International Linear Collider

1. 2. 3. 4. 5. 6. 7.

Building the Physics Case Establishing the need for the Linear Collider in the LHC era Designing the Collider and moving toward construction International plan of support by the Governments Planning and doing the necessary R&D for the Detectors Continuing our Outreach Plans for future workshops

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The Universe and the Linear Collider
The physical universe is a curious place
Symmetry in Leptons/Quarks broken Very Heavy Top - why? Standard Model-like Electroweak couplings but unsatisfying Standard Model Evidence for light Higgs boson - can we find it? Dark Matter - what is it? Dark Energy - WHAT IS THIS?? Extra dimensions? - can we "see" them?

We Need the Linear Collider to explore and reveal reasons for these effects Theory talks today: JoAnne Hewett ­ New ideas Uli Baur ­ Precision Calculations Jonathan Feng
J. Brau - ALCPG Workshop, Victoria - July 28l, 2004

the underlying in EW SymBrk ­ THE COSMOS
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1. Building the Physics Case


History of Support for the Linear Collider
The Physics case for the Linear Collider has been clear for years now Motivated by this, a broad segment of the community has joined in support of the goal to realize the Linear Collider (selected)
ICFA Statement on Linear Colliders ­ 1999
Recommends vigorous R&D to be ready in a few years http://www.fnal.gov/directorate/icfa/icfa_LCstatement.html

Snowmass Consensus Statement ­ 2001
strongly recommends the expeditious construction of a Linear Collider as the next major international High Energy Physics project

DOE/NSF Subpanel Report ­ 2002
recommends that the highest priority of the U.S. program be a high-energy, high-luminosity, electron-positron linear collider

"Understanding Matter, Energy, Space and Time: The Case for the e+e- Linear Collider" - 2003/4
~2700 signatories

2004 ­ ACFA, ECFA, and HEPAP reaffirm their commitment to the Linear Collider J. Dorfan, ICFA Chair 1. Building the Physics Case
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Quantum Universe

1. Building the Physics Case
J. Brau - ALCPG Workshop, Victoria - July 28l, 2004 5


Quantum Universe

1. Building the Physics Case
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National Academies Study: EPP 2010
At the dawn of the 21st century, elementary particle physics is poised to address some of the most basic questions in science. Obtaining the answers to these questions will require a global effort of great scale and complexity. The committee is charged to construct a plan for U.S. participation in this effort. In particular, the committee will Identify, articulate, and prioritize the scientific questions and opportunities that define elementary-particle physics. Recommend a 15-year implementation plan with realistic, ordered priorities to realize these opportunities.
Committee Membership (provisional) Harold T. Shapiro, Princeton University, Chair Sally Dawson, Brookhaven National Laboratory, Vice Chair Jonathan Bagger, Johns Hopkins University, BPA Liaison Other committee members are being nominated and will be recommended for appointment; the full committee is expected to be identified by September 2004. http://www7.nationalacademies.org/bpa/EPP2010.html To send comments or suggestions to the committee, please send e-mail to epp2010@nas.edu. 1. Building the Physics Case
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The LHC/LC Study Group
The aim of the LHC / LC Study Group is to investigate how analyses at the LHC could profit from results obtained at a LC and vice versa.
Started in Spring, 2002, truly worldwide effort Collaborative effort of Hadron Collider (HC) and Linear Collider (LC) communities Study Group officially recognized by the International Linear Collider Steering Committee About 190 working group members from ATLAS, CMS, LC Working Groups, theory + Tevatron contact person Working Group coordination: R. Godbole, F. Paige, G. Weiglein Web page: www.ippp.dur.ac.uk/~georg/lhclc prepared a draft document for the Les Houches Workshop Third Les Houches Workshop on Physics at TeV Scale Colliders: May 26 June 6, 2003 Draft Report is posted on LHC/LC Web page 2. Establish the need for the LC in the LHC era
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LHC and the Linear Collider
We have made the case for the Linear Collider during the LHC era, but it is not universally accepted ­ keep working on it. There are those who say wait to see the results of the LHC This is not an acceptable answer
We know now the energy regime of the new physics from virtual effects at lower energy The Linear Collider data will enhance the value of the LHC data In many scenarios, the physics value of the Linear Collider significantly exceeds that of the LHC The momentum and technical know-how cannot easily be re-established

Try to make argument even stronger
How would LHC program (upgrades, analysis, trigger, etc.) be changed by Linear Collider results?

Sally Dawson will speak today on LC-LHC Connections

2. Establish the need for the LC in the LHC era
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Linear Collider Scope
First step in moving to a final design for the Linear Collider was to establish the Physics Motivated Linear Collider Scope

3. Designing Collider / moving to construction
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International Scope Document
BASELINE MACHINE
ECM of operation 200-500 GeV Luminosity and reliability for 500 fb-1 in 4 years Energy scan capability with <10% downtime Beam energy precision and stability below about 0.1% Electron polarization of > 80% Two IRs with detectors ECM down to 90GeV for calibration

UPGRADES
ECM about 1 TeV Allow for ~1 ab-1 in about 3-4 years

http://www.fnal.gov/directorate/ icfa/LC_parameters.pdf

OPTIONS
Extend to 1 ab-1 at 500 GeV in ~ 2 years e-e-, , e-, posi-pol Giga-Z, WW threshold
3. Designing Collider / moving to construction
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Steps To a Technology Selection
1994 - A Technical Review Committee was created in 1994 1995 - report 2001 ­ ICFA requested a second report ­ new committee ­ same chair: G. Loew
To assess the present technical status of the four LC designs at hand, and their potentials for meeting the advertised parameters at 500 GeV c.m.. Use common criteria, definitions, computer codes, etc., for the assessments To assess the potential of each design for reaching higher energies above 500 GeV c.m. To establish, for each design, the R&D work that remains to be done in the next few years To suggest future areas of collaboration

2004 ­ ITRP meets to review technologies and recommend a choice

3. Designing Collider / moving to construction
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Accelerator Technology Selection (ITRP)
International Technology Recommendation Panel (ITRP), asked to recommend to ILCSC/ICFA the RF technology of the main linacs, has now held 5 intensive meetings
Jean-Eudes Augustin Jonathan Bagger Barry Barish (Chair) Giorgio Bellettini Paul Grannis Norbert Holtkamp George Kalmus Gyung-Soo Lee Akira Masaike Katsunobu Oide Volker Soergel Hirotaka Sugawara Meetings January 27-28, 2004 ­ Rutherford Appleton Laboratory. April 5-6, 2004 - DESY. April 26-27, 2004 - SLAC. May 25-26, 2004 ­ KEK June 28-30, 2004 ­ Caltech Aug 11-13, 2004 ­ Korea.

Appears to have a good chance for a recommendation in August
Barry will give us a report on Friday 3. Designing Collider / moving to construction
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US Input to ITRP: The US Linear Collider Technology Options Study
The USLCSG accelerator subcommittee (chair: G. Dugan) took on the challenging task of providing for the world community a comparison of a US-based machine using either warm or cold technology. Two technology options were developed:
a warm option, based on the design of the NLC Collaboration, and a cold option, similar to the TESLA design at DESY.

Both options meet physics design requirements specified by USLCSG Scope document. (the similar ILC scope was not yet available) Both options were developed in concert, using, as much as possible, similar approaches in technical design for similar accelerator systems, and a common approach to cost and schedule estimation methodology, and to risk/reliability assessments. Highly detailed and technically rich report (475 pages). http://www.slac.stanford.edu/xorg/accelops/
3. Designing Collider / moving to construction
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WWStudy Input to ITRP:
Physics Questions (30b, 30d)
How do you make the case for determining the final energy choice for the LC prior to LHC results? What if LHC results indicate that a higher energy than design is required ? Considering that LC will start much later (although it can have concurrent operation period) than LHC, what physics capability does LC have which LHC does not share? Can this be realized at 500GeV or does it require much higher energy? During the Paris LCWS "Colloque", a task force prepared answers to these important questions, which were then submitted to the ITRP (http://hep.uchicago.edu/~oreglia/Q30bd.pdf)

The Worldwide Study was invited to present at the June ITRP meeting at Caltech a discussion of the detector issues related to the technology choice
3. Designing Collider / moving to construction
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WWStudy Input to ITRP:
June 28, Caltech
(coordinated by John Jaros, Francois Richard, Satoru Yamashita) Energy Spread Issues Crossing Angle Bunch Timing from the cold Perspective Bunch Timing from the warm Perspective Tim Barklow Philip Bambade Klaus Moenig Hitoshi Yamamoto
Talks posted at: http://www.ligo. caltech.edu/~donna/ Documents_mt5.htm

Conclusion: There are detector challenges for either collider technology choice, non which should be factor in technology selection Mike Woods will speak later today on impact of technology choice on LC physics and detectors

3. Designing Collider / moving to construction
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Forming an International LC Design Group
ILCSC established a task force to recommend how best to establish an internationally federated design group
Will start the machine design as soon after the technology decision as possible. First step in internationalizing the LC. The goal is to have the structure of this design group agreed upon by ICFA and the funding agencies prior to finalizing the technology choice.

Members of the task force are
Satoshi Ozaki (Chair), Jonathan Dorfan, Brian Foster, Won Namkung, Yoji Totsuka, Albrecht Wagner .

http://www.fnal.gov/directorate/icfa/04-03-31_GDI_TF_Report.pdf

3. Designing Collider / moving to construction
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Global Design Intiative
The Global Design Initiative proposed by the task force, will work to proposed move quickly toward a TDR following the technology decision
http://www.fnal.gov/directorate/icfa/04-03-31_GDI_TF_Report.pdf

2004 International technology selection. Multi-laboratory MOU's to define and initiate the Global Design Effort. 2005 Complete the accelerator CDR, including site requirements, and initial cost and schedule plan. 2006 Initiate detailed engineering designs under the leadership of the Central Team. 2007 A complete detailed accelerator TDR with the cost and schedule plan, establish the roles & responsibilities of regions, and begin the process for site proposals. 2008 Site selection and approval of international roles & responsibilities by the governments.
Jonathan Dorfan will speak later today on how this will be implemented
J. Brau - ALCPG Workshop, Victoria - July 28l, 2004

3. Designing Collider / moving to construction
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Organisation for Economic Co-operation and Development
OECD Global Science Forum analysis of particle physics (July 2002)
agreed with the world-wide consensus on LC ­ concurrent operation with LHC recommends continuation of consultations in preparation of the meeting of the OECD science ministers in 2004.

Meeting of the OECD Science Ministers
January 28-29, 2004
·Acknowledged the importance of ensuring access to large-scale research infrastructure and the importance of the long-term vitality of high-energy physics. ·Noted worldwide consensus of the scientific community for an electron-positron linear collider as the next accelerator-based facility to complement and expand on the discoveries of the LHC ·Agreed that the planning and implementation should be carried out on a global basis, and should involve consultations among scientists and representatives of science funding agencies from interested countries. ·Noted the need for strong international R&D collaboration and studies of the organisational, legal, financial, and administrative issues required to realise the next major accelerator facility, a next-generation electron-positron collider with a significant concurrent running with the LHC. 4. International Plan of support by the Govts International by
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Funding Agencies Meetings
July, 2003 "premeeting" of Agency folks (Europe and N.America) in London to enumerate the challenges and questions facing creation of agency based governance for an international project organization.
This meeting was an informal body to share views and opinions on prospects and issues in each of the states involved. The group discussed the status of current funding for a linear collider (LC) and their perceptions of the prospects for the future.

April, 2004

Second meeting of "Agency folks" in London

UK, Germany, France, Italy, US, Canada, Japan, CERN Stressed importance of ITRP in 2004. Discussed three year R&D, followed by engineering design phase with completion of design in 2010. Earliest operation of linear collider 2015. Commissioning of a LC in 2015 could provide 5 years of concurrent running with the LHC. Timetable is consistent with the OECD Ministerial announcement of 29 ­ 30 January 2004.
Minutes on the web: http://www-jlc.kek.jp/licopo/documents/FALC/LC.april04.htm

Third meeting this week.
4. International Plan of support by the Govts International by
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Two Detectors
International Scope Document specifies two operational detectors from the start Why two?
Competition Cross-check Efficiency Insurance Scientific opportunities

What two? How do we get there?

5. R&D for the Detectors
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Two Detectors
Several detector concepts have been or are under study
GLC Detector TESLA TDR Detector Silicon Detector American Large Detector

On Friday Harry Weerts will discuss the Detector Design Study of the Silicon Detector and Graham Wilson will explore the parameters and choices of a large detector, such as GLC, TESLA TDR, or American Large Global Organization of preparation for the Experimental Program
WWS organizing committee has drafted a proposal in preparation for the ILCSC in Beijing - we will discuss this in the plenary session on Friday
DRAFT circulated last week: http://blueox.uoregon.edu/~lc/wwstudy/ORG_GLOBAL_EXP_PROG_2.2.pdf WWS org. comm. met yesterday and is revising the draft proposal 5. R&D for the Detectors
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Steps to Detector TDRs
GDI Milestone Steps toward Detector Realization ITRP Technology initiate global Detector R&D review, MDI task force, Recommendation (2004) costing task force - early 2005 Accelerator CDR (2005) Preliminary costing of at least two whole-detector concepts (single joint document with performance estimates for each concept, plus reference to R&D done and that still required.) This document should be produced in time to be included in the Accelerator CDR process of the GDI. Accelerator TDR (2007) CDRs ­ WWS receives CDRs for experiments (these could be different set of concepts from, step above, as new ideas come with new people) LC Site Selection (2008) Proposal ­ Collaborations form around the CDR detector concepts to prepare proposals (including performance, costs, and technical feasibility). The Global Lab will invite groups to produce TDRs. Site Selection + 1 Year TDR ­ Global Lab receives TDRs from invited Proposals and selects experiments.
Caveat, these are my notes from yesterday; not yet the official version ­ will be presented Friday J. Brau - ALCPG Workshop, Victoria - July 28l, 2004

5. R&D for the Detectors
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Detector Design Studies
Detector efforts must be inter-regional ­ we have a ways to go Silicon Detector Design Study
Design study meeting Saturday afternoon Subsequent meetings planned at Durham ECFA Study (Sep 3) and at Taiwan ACFA Woskshop (November)

Large Detectors
TESLA TDR GLC Very Large American Large Each of these originates as regional efforts. Some difference in the choices
eg. GLC Very Large employs more cost effective calorimetry, allowing larger tracking volume.

Considering how to develop
5. R&D for the Detectors
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Detector R&D is Critical

Late Thursday afternoon we will hold a special plenary session focussed on detector R&D issues: speakers: Brau, Jaros, Heuer

Graphically summarized by Jae Yu

5. R&D for the Detectors
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R&D Support in US
A single, combined proposal has been developed (led by UCLC and LCRD) in each of the past two years:
A University Program of Accelerator and Detector Research for the Linear Collider LCRD submitted to DOE UCLC submitted to NSF

5. R&D for the Detectors
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A University Program of Accelerator and Detector Research for the Linear Collider 2003 Proposal

2002 Proposal

Pr oposed Budget

No. pr ojects

Accelerator Physics $1,003, Luminosity, Energy, Polarizatio $171, Vertex Detector $119, Tracking $395, Calorimetry $514, Muon system and Particle ID $148, TOTAL

783 541 100 662 540 899

33 9 3 11 12 3 71

$2,353,525

http://www.hep.uiuc.edu/LCRD/html_files/proposal.html http://www.hep.uiuc.edu/LCRD/pdf_docs/LCRD_UCLC_Big_Doc/

USLCSG commissioned Detector R&D review panel
5. R&D for the Detectors
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$©$

DOE Grants

$©$

DOE responded to the proposals in FY03 and FY04 by funding 14 university LC detector R&D efforts in FY03 and 20 in FY04 based on the review by the USLCSG panel FY03 FY04
Lum/Energy/Pol Calorimetry Muons Particle ID Tracking Vertex 4 3 2 1 2 2 4 (1) 6 (2) 3 5 (1) 2

» NOTE : Parenthesis refers to subset that are UCLC projects

and 12 university LC accelerator R&D projects in FY03
4 supplements and 8 new grants about $500k for detector R&D and about $400k for accelerator R&D in FY03 and about $700k for detector R&D and about $400k for accelerator R&D in FY04

5. R&D for the Detectors
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DOE FY05 Proposals
DOE preparing to support projects again in FY05 Jim Reidy is here and will speak on Friday Process is being discussed Jim will give some details

5. R&D for the Detectors
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NSF Proposals
The UCLC received a planning grant for 150k$ in FY03 Marv Goldberg is here and will speak on Friday

5. R&D for the Detectors
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Test Beams
The Detector R&D will require test beams The Working Groups have developed an understanding of the needs and the inventory of available beams for detector tests This is an issue of interest to the world-wide community Jae Yu and Gene Fisk have led a very active effort to develop the test beam plan in collaboration with European and Asian partners Continue discussions here this week

5. R&D for the Detectors
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International R&D Coordination International Detector R&D Committee report summarizes the world-wide R&D effort http://blueox.uoregon.edu/~lc/randd.html report is dynamic through a set of web pages WWS will be renewing this effort International R&D Review meetings
Vertex detection and intermediate tracking, North America (Arlington), January 8, 2003 Main Tracker and Muons, Europe (Amsterdam), March 31, 2003 Calorimetry and Forward Detectors, Europe (Montpellier), November, 2003 Vertex detection and intermediate tracking, Asia (Mumbai), December, 2003 Main Tracker and Muons, North America (SLAC), January, 2004 5. R&D for the Detectors
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Discussing future review meetings now for Durham, Taipei, and beyond


Outreach
Think about your elevator speech on the Linear Collider
See talks at Cornell and SLAC ALCPG meeting by Neil Calder and Judy Jackson

Tell the story to politicians and public whenever possible Use the Quantum Universe Remember the Linear Collider is just a part of the needed investments in the physical sciences

6. Continuing our Outreach
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Future Meetings of the ALCPG, and WWS
This workshop is the sixth semi-annual workshop since Snowmass 2001 Chicago ­ Jan, 2002 Santa Cruz ­ Jun, 2002 Arlington ­ Jan, 2003 Cornell ­ Jul, 2003 SLAC ­ Jan, 2004 Victoria ­ Jul, 2004 This frequency has help us to intensify our efforts Beyond Victoria: The next LCWS (Worldwide Study) will be in the Americas in March, 2005 Do we need another ALCPG Workshop prior to March? Tentative sense is no, but there may be a need of smaller focussed meetings How often should we plan meetings in the future? 1/year as WWS Workshop go to 1/year
7. Future Workshops
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LCWS 2005
LCWS 2005 will be in the Americas in March, 2005 Six proposals were submitted to host the meeting in the Americas
Arlington (UTA), Fermilab, Puebla (Mexico), San Francisco (LBNL), Stanford (SLAC), Vancouver (Triumf)

The proposals are under review, and a final selection will be made in August

7. Future Workshops
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Monthly Electronic Continental Meetings

committee: S. Dawson, G. Gollin, N. Graf, R. Patterson, S. Tkaczyk, J. Brau, M. Oreglia Dec. 13, 2002 Feb. 20,2003 Summary of the Ferimlab LHC/LC Workshop LC Affairs on the Intl Scene The LC and the Cosmos: Connections in Supersymmetry Challenges of Linear Collider Damping Rings Matter and Energy, Space and Time: Particle Physics in the 21st Century SD, an Introduction Working Group on Connections to Astrophysics and

Sally Dawson Maury Tigner Jonathan Feng Andy Wolski Jonathan Bagger Martin Breidenbach Cosmology

Mar. 27,2003 May 8, 2003 Jun. 5, 2003 Nov. 6, 2003 Apr.l 8, 2004

J. Feng/M. Trodden The US Linear Collider Technology Options Study Gerry Dugan Ideas are invited 7. Future Workshops

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Coordinating with European and Asian Partners
ECFA Study on Physics and Detectors for a Linear Electron-Positron Collider Durham, September 1-4, 2004 ACFA Workshop series

November 9-12, 2004 - 7th ACFA Workshop on Physics/Detector at the Linear Collider Taipei, Taiwan

Many of us have been participating overseas 20 or more from NA have been attending each of the past DESY/ ECFA WorkShops We need to continue and strengthen this cooperation
7. Future Workshops
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Support is Building for the Linear Collider

WORLD LEADERS ARE DISCUSSING IT AT EVERY OPPORTUNITY

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Summary
The past two years have seen many important advances toward realizing the linear collider (incomplete list)
Regional Steering Groups Formed International Steering Committee Formed Scope Defined Internationally Consensus Document Expressed Physics Goals and Drove Scope TRC Evaluation of Technologies ITRP Commissioned and Nearing Recommendation Central Design Group Being Planned (GDI) Office of Science designates LC as "top priority" mid-term project OECD and Governmental Attention and Deliberation
Very positive outcomes of discussions

Many of the necessary steps are being taken We must continue, coordinate, and intensify our R&D efforts to capitalize on the coming opportunities

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Support is Building for the Linear Collider

IT CAN UNITE THE LEAST LIKELY

JIBJAB.COM

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