Progress at Snowmass on some ILC physics, machine and detector issues Introduction ILC GDE, ILC Challenges, ILC/LHC Detectors/Subdetectors Benchmark reactions 2 detectors/2 IPs TPC tasks, R&D plans for the future Momentum-resolution needed Detector configuration TPC-Magnetic-field issue Detector costing 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

S N O W M A S S 2005 ~ 30 WGs!! + several plenaries, ‘town meetings’ or forums: benchmarks,2det/2IR,GDE,det.R&D,ILCchallenges,LHC/LC,Outreach… 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Physics Overview by Peter Zerwas 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary News from the ILC …from: Barry Barish Users’ Meeting Fermilab in summer 05 with Snowmass updates for today’s meeting by R.S. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Why e+e- Collisions? elementary particles well-defined energy, angular momentum uses full CMS energy produces particles democratically can mostly fully reconstruct events 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary A Rich History as a Powerful Probe 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The Energy Frontier 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

The Global Design Effort Formal organization begun at LCWS 05 at Stanford in March 2005 when Barry became director of the GDE Technically Driven Schedule 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary GDE – Near Term Plan Organize the ILC effort globally First Step --- Appoint Regional Directors within the GDE who will serve as single points of contact for each region to coordinate the program in that region. (Gerry Dugan (North America), Fumihiko Takasaki (Asia), Brian Foster (Europe)) Second --- Open website, coordinate meetings, coordinate R&D programs, etc R&D Program Coordinate worldwide R & D efforts, in order to demonstrate and improve the performance, reduce the costs, attain the required reliability, etc. Proposal and priority driven to GDE, BOTH machine and detector R&D 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Global Design Effort GDE @ Snowmass Accelerator summaries Friday 19/08/2005 GDE organizational meeting Saturday 20/08/2005 Convergence towards GDE summarized by Nick Walker Friday 26/08/2005 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary ILC Challenges Forum on Tuesday 23/08/2005 Jonathon Dorfan, ICFA chairman Fred Gilman, chairman of US HEPAP John P. (Pat) Looney, former assist. ‘science policy adv.’ to US president “Tunneling through the DC barrier…” Robert Staffin, assoc. dir. DOE office of HEP Michael Turner, assist. dir. of NSF Roberto Petronzio, chair of FALC (Funding Agencies for ILC: Canada, France, Germany, Italy, Japan, Korea, UK, US, Cern) Shin-ichi Kurokawa, ACFA chair + incoming ILCSC chair repl. Maury Tigner Albrecht Wagner, incoming ICFA chair Discussion weighted towards ‘US-hosting of ILC’. Significant statement by R.Petronzio on CERN policy: ‘0.5-1.0TeV s.c. ILC is next machine; CLIC technology is generation-after-next…’ 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary ILC/LHC Discussed on several occasions, e.g., - By Joe Lykken at opening plenary on “Discovery of the Quantum Universe”, HEPAP Report on ILC/LHC for EPP2010, saying… ‘both are important, but not necessarily running simultaneously’ At afternoon debate Wednesday 24/08/2005 on whether ILC justification depends on LHC discoveries, among others… Sven Heinemeyer  “no” Mike Peskin  “yes” (has since changed his mind) Many comments… 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Detectors/Subdetectors 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

GLD Detector for ILC experiments Detector design Philosophy: Good jet energy resolution g calorimeter inside a coil highly segmented calorimeter Efficient & High purity b/c tagging g Thin VTX, put close to the IP Strong solenoid field Pixel type High momentum resolution Hermetic down to O(10)mrad Shielded enough against beam-related background Muon detector Calorimeter Coil Vertex detector Tracker 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary GLD Contact persons Hwanbae Park Mike Ronan Ron Settles Mark Thomson Graham Wilson Hitoshi Yamamoto Muon detector Calorimeter Coil Vertex detector Tracker 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary SiD 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Physics determines detector design momentum: d(1/p) ~ 10-4/GeV(TPC only) ~ 0.6x10-4/GeV(w/vertex) (1/10xLEP) e+e-gZHgll X goal: dMmm <0.1x GZ  dMH dominated by beamstrahlung tracking efficiency: 98% (overall) excellent and robust tracking efficiency by combining vertex detector and TPC, each with excellent tracking efficiency 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Benchmark Reactions 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Benchmark Reactions 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Benchmark Reactions 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Benchmark Reactions 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Barry… Strawman Final Focus 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs by Joel Butler (devil’s avocate from FNAL) and Jim Brau, Tsunehiko Omori and R.S. for the WWSOC 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs and ~ 20 more… 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary 2 Detectors/2IPs 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

2 Detectors/2IPs Basically what came out of the discussion was that Almost all agreed to the arguments for 2 complementary detectors if they can be afforded Barry preferred the 1IP/2det push-pull versions to save money The discussion is continuing… 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

TPC central-tracker tasks ISSUES Performance/Simulation Design Backgrounds, alignment, corrections 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

To design and build an ultra-high performance HISTORY 1992: First discussions on detectors in Garmisch-Partenkirschen (LC92). Silicon? Gas? 1996-1997: TESLA Conceptual Design Report. Large wire TPC, 0.7Mchan. 1/2001: TESLA Technical Design Report. Micropattern (GEM, Micromegas) as a baseline, 1.5Mchan. 5/2001: Kick-off of Detector R&D 11/2001: DESY PRC proposal. for TPC R&D (European & North American teams) 2002: UCLC/LCRD proposals 2004: After ITRP, WWS R&D panel Europe Chris Damerell (Rutherford Lab. UK) Jean-Claude Brient (Ecole Polytechnique, France) Wolfgang Lohmann (DESY-Zeuthen, Germany) Asia HongJoo Kim (Korean National U.) Tohru Takeshita (Shinsu U., Japan) Yasuhiro Sugimoto (KEK, Japan) North America Dan Peterson (Cornell U., USA) Ray Frey (U. of Oregon, USA) Harry Weerts (Fermilab, USA) GOAL To design and build an ultra-high performance Time Projection Chamber …as central tracker for the ILC detector, where excellent vertex, momentum and jet-energy precision are required 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Motivation… Because we want to make precision measurements of the …Higgs Expt (GeV) Decay Channel (GeV/c2) ln(1+s/b) 115 GeV/c2 1 ALEPH 206.7 4-jet 114.3 1.73 2 112.9 1.21 3 206.5 110.0 0.64 4 L3 206.4 E-miss 115.0 0.53 5 OPAL 206.6 110.7 6 Delphi 0.49 7 205.0 Lept 118.1 0.47 8 208.1 Tau 115.4 0.41 9 114.5 0.40 10 205.4 112.6 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

TPC R&D Groups America Europe Asian ILC gaseous-tracking groups Other RWTH Aachen CERN DESY U Hamburg U Freiburg U Karlsruhe UMM Krakow Lund MPI-Munich NIKHEF BINP Novosibirsk LAL Orsay IPN Orsay U Rostock CEA Saclay PNPI StPetersburg America Carleton U Cornell/Purdue Indiana U LBNL MIT U Montreal U Victoria Asian ILC gaseous-tracking groups Chiba U Hiroshima U Minadamo SU-IIT Kinki U U Osaka Saga U Tokyo UAT U Tokyo NRICP Tokyo Kogakuin U Tokyo KEK Tsukuba U Tsukuba Tsinghua U Other MIT (LCRD) Temple/Wayne State (UCLC) Yale NB: Started as subset of these groups working together in the framework of the DESY PRC, but it is not yet a formal “collaboration”: forming this will be the next step. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Performance/Simulation Momentum precision needed for overall tracking? Momentum precision needed for the TPC? Arguments for dE/dx, Vº detection Requirements for 2-track resolution (in rφ and z)? track-gamma separation (in rφ and z)? Tolerance on the maximum endplate thickness? Tracking configuration Calorimeter diameter TPC Other tracking detectors TPC outer diameter TPC inner diameter TPC length Required B-mapping accuracy in case of non-uniform B-field? 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Design Gas-Amplification technology  input from R&D projects Chamber gas candidates: crucial decision! Electronics design: maximum density possible? Zeroth-order “conventional-RO” design Is there an optimum pad size for momentum, dE/dx resolution and electronics packaging? Silicon RO: proof-of-principle Endplate design Mechanics Minimize thickness Cooling Field cage design 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Backgrounds/alignment/distortion-correction Revisit expected backgrounds -> Akira started Maximum positive-ion buildup tolerable? Maximum occupancy tolerable? Effect of positive-ion backdrift: gating plane? Tools for correcting space charge in presence of bad backgrounds? 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary TPC R&D Plans 1) Demonstration phase Continue work for ~1 year with small prototypes on mapping out parameter space, understanding resolution, etc, to prove feasibility of an MPGD TPC. For Si-based ideas this will include a basic proof-of-principle. 2) Consolidation phase Build and operate “large” prototype (Ø ≥ 75cm, drift ≥ 100cm) within framework of EUDET grant from the EU which allows any MPGD technology, to test manufacturing techniques for MPGD endplates, fieldcage and electronics. Design work would start in ~1/2 year, building and testing another ~ 2-3 years. 3) Design phase After phase 2, the decision as to which endplate technology to use for the LC TPC would be taken and final design started. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

I3 Proposal  “Integrated Infrastructure Initiative” Defacto approved! ~ 7 M€ over 4 years to provide R&D infrastructure by European + associated groups R&D open to whole world (a EU group should a collaborating member) 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Work Packages for Large Prototype P R E L I M I N A R Y ! 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Momentum resolution needed momentum: d(1/p) ~ 10-4/GeV(TPC only) ~ 0.6x10-4/GeV(w/vertex) (1/10xLEP) e+e-gZHgll X goal: dMmm <0.1x GZ  dMH dominated by beamstrahlung  5 X better needed? Tim Barklow studying… tracking efficiency: 98% (overall) excellent and robust tracking efficiency by combining vertex detector and TPC, each with excellent tracking efficiency 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Momentum resolution needed? Study by Bruce Schumm… Easy 3D track recognition & dE/dx TPC  δ(1/p) Silicon 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Momentum resolution needed… “Club sandwich” possible in GLD because of large size. We will study performance & feasibility of this option in case the momentum precision is required. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

On the Magnetic-field Requirements for the LC TPC 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

LC Note in preparation… …based on experience with Aleph TPC 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The B-field issue The ‘standard’ TPC requirement for the B-field homogeneity has been (from the LC Note): 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

On the Magnetic-field Requirements for the LC TPC Dan Peterson and I presented two different viewpoints at an LDC meeting on Monday. Both of these viewpoints are based on simplified arguments to help understand the effects. “Back-of-the envelope” must be interpreted carefully, what is needed to understand the problem in detail is simulation work. We both agree that the problem is solvable 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The B-field http://wisconsin.cern.ch/~wiedenma/TPC/Distortions/CERN_LC.pdf 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The B-field http://wisconsin.cern.ch/~wiedenma/TPC/Distortions/CERN_LC.pdf 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

The systematic uncertainty 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The B-field Corrections exact if B-field known exactly; so what must B accuracy be? E-field The relevant equations for movement of drifting electrons in B-field 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary From the LC Note… ◦ 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary From the LC Note… Problems: - Different coil configuration between mapping and running - Hall plate drifts - Temperature drifts  Aleph should have taken more time for the calibration of various effects and mapped with more configurations. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

B-field Map for the LC TPC Aleph map almost good enough for the LC TPC; profit from experience: Lay out map to achieve 0.1‰ as was originally planned in Aleph. Construct main detector coil to adhere to ‘2mm condition’ if affordable. Establish tolerances with careful simulation: Do same for stray fields of MDI magnets. Mount matrix of Hall plates on LCTPC to monitor/check while running. Devise model including all material to compare with Hall-plate matrix. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Preliminary conclusion on LC TPC B-map Tolerance on B-field map: 1 x 10-4 in the LC TPC (goal) 5 x 10-4 in the Aleph TPC (achieved) ~ Map B-field to B-field accuracy after corrections using tracks (based on very simple, conservative model  simulation needed to provide better answer) h = field homogeneity σ_o = tolerance on systematic error of single point measurement ~ 1.5 x 10-5 for the LC TPC (goal) 1-4 x 10-5 for the Aleph TPC (achieved) 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

ILC Detector Cost Estimating Issues, Numberstalk by Marty Breidenbach GLD A. Miyamoto; R. Settles LCD H. Videau SiD M. Breidenbach 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Motivation Gain understanding of the cost scale of these detectors. Attempt to provide a basis for comparing detector costs. Develop tools for cost optimizing the detector concepts. SiD has beginnings of WBS and parametric cost tools. LDC has WBS and is intending a parametric approach GLD is beginning cost estimation All policy issues reflect our understandings- and are not official in any way. ILC is beginning to develop a cost methodology. ITER is possible model. ITER has “Core Values” in “ITER Units”, which are used as a basis for distributing responsibilities. Tasks are “Key” (interesting to most everyone) and “Conventional” (boring??). Attempts are made to fairly allocate both varieties. ITER model is that host country pays all Facilities Costs. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary Issues Accounting Rules: US versus European accounting: US convention is to cost all technical labor – Engineering Technicians Trades But not faculty, physicists, students European convention (appears to) cost none of the labor. European system makes sense if adequate labor is permanently employed by the participating universities and labs – and conversely!! Both systems cost full M&S. France is tending towards accounting of all labor by program. Japanese accounting seems similar to European, except that there is relatively little “in-house” labor. Consequently labor appears to be costed M&S. ILC: Account for M&S in ILC Units Account for labor by type in Man-Years. 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

SiD Working Assumptions All technical labor included Contingency is explicit All engineering is included Indirects are included Escalation is included Comparison among detectors requires agreement on the accounting issues! 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Highest Level WBS (then there are 2nd, 3rd,levels…) 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The Answer Summary   VXD 6.0 Tracker 19.9 EMCal 74.7 Hcal 74.2 Muon System 26.0 Electronics 37.5 Magnet 164.1 Installation 9.6 Management 9.4 Escalation 140.2 Indirects 38.5 Total 600.2 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary SiD Costs by type SiD Costs by type   M&S $244 Labor $70 Contingency $107 Indirects $39 Escalation 140.2 Total $600 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Some final, random remarks New configuration exercise being studied by GLD  4th detector concept appeared (Wigmans et al) Vertex people starting ‘global collaboration’ (similar to other subdetectors Chances for ILC @ Fermilab look not-impossible (European, Japan ‘sample’ sites not yet known) GDE working groups well on the way after Snowmass, but got a long way to go: baseline configuration end 2005, costed CDR end 2006, etc 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary

Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary The story began 1991, we seem to be making progress… 20/09/2018 Ron Settles MPI-Munich/Desy Tsinghua/Snowmass2005 Summary