ILC Status and Higgs Factory J. Gao -...
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ILC Status and Higgs Factory
J. Gao
IHEP
Tsinghua LHC 2012, Nov. 12, 2012 Tsinghua University,Beijing, China
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Contents -ILC status -China in ILC -Higgs Factories
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Contents
-ILC status -China in ILC -Higgs Factories
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ILC Layout (TDR)
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ILC Main Parameters (2011) light Higgs new physics
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ILC-TDR: Baseline Parameters
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Technical Design Phase
AD&I studies
2009 2010
RDR ACD concepts
R&D Demonstrations
TDP Baseline
Technical Design
2011 2012 2013
RDR Baseline
Beijin
g W
ork
sh
op
TDR
TDP-1 TDP-2 Change
Request
SB2009 evolve
change control process AAP
PAC
Physics
CE
RN
Wo
rksh
op
Global Design Effort 7 22-Oct-12
LCWS12 - Arlington, TX
Write Reviews
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• Oct. 2007: Call for LOIs was made by ILCSC
• Jan. 2008: Detector management was formed
• Mar.2008: IDAG formed, 3 LOI groups known
• Mar.2009: 3 LOIs submitted
• Summer 09: IDAG recommendation for
validation and ILCSC’s approval
• Oct 2009: Work plan of the validated groups
• Mar:2009: IDAG began monitoring the progress
• End 2010: Interim report to be produced
• It is under the final edit.
• End 2012: Detailed Baseline Design Report including physics case for ILC
2007
2008
2009
2010
2011
2012
RDR
The time line of the ILC Detector R&D
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GDE Status & Plans
• Update on major ILC accelerator R&D goals
• ILC Systems Tests
• The Technical Design Report
• Japanese plan and candidate sites
• Cost estimate and RDR comparison
• Staged approach? Higgs Factory ILC
Global Design Effort 9 22-Oct-12
LCWS12 - Arlington, TX
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ILC Main Accelerator Systems
• Superconducting Accelerator (SCRF)
• BDS-ATF2
• Damping Ring
• e+ source
• RTML and ML beam dynamics
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The ILC SCRF Cavity
- Achieve high gradient (35MV/m); develop multiple
vendors; make cost effective, etc
- Focus is on high gradient; production yields; cryogenic
losses; radiation; system performance
Global Design Effort 11 22-Oct-12
LCWS12 - Arlington, TX
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Global Plan for ILC Gradient R&D
New baseline gradient: Vertical acceptance: 35 MV/m average, allowing ±20% spread (28-42 MV/m)
Operational: 31.5 MV/m average, allowing ±20% spread (25-38 MV/m)
Global Design Effort 12 22-Oct-12
LCWS12 - Arlington, TX
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Yearly Progress in Cavity Gradient Yield
13 22-Oct-12
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S-1 Global – plug compatible
14 22-Oct-12
LCWS12 - Arlington, TX Global Design Effort
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S-1 Global – plug compatible
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S-1 Global cryomodule assembly
S-1 Global
Achieved gradients
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S-1 Global – plug compatible
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FLASH 9mA achievements: 2009 present
High beam power and long bunch-trains (Sept 2009)
Metric ILC Goal Achieved
Macro-pulse current 9mA 9mA
Bunches per pulse 2400 x 3nC (3MHz) 1800 x 3nC
2400 x 2nC
Cavities operating at high gradients, close to quench
31.5MV/m +/-20% 4 cavities > 30MV/m
Gradient operating margins (Feb 2012)
Metric ILC Goal Achieved
Cavity gradient flatness (all cavities in vector sum)
2% DV/V (800ms, 5.8mA) (800ms, 9mA)
<0.3% DV/V (800ms, 4.5mA)
First tests of automation for Pk/Ql control
Gradient operating margin All cavities operating within 3% of quench limits
Some cavities within ~5% of quench (800us, 4.5mA)
First tests of operations strategies for gradients close to quench
Energy Stability 0.1% rms at 250GeV <0.15% p-p (0.4ms)
<0.02% rms (5Hz) 22-Oct-12
LCWS12 - Arlington, TX Global Design Effort 17
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Fermilab – NML SRF
Systems Tests
Fermilab NML: RF Unit Test Facility
Global Design Effort 18 23-April-12
KILC - Daegu, Korea
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ATF2 – Beam size/stability and kicker tests
IP Shintake Monitor
Final Doublet
Global Design Effort 19 22-Oct-12
LCWS12 - Arlington, TX
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ATF-2 earthquake recovery
22-Oct-12
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• Vertical beam size (2012) = 167.9 plus-minus nm
• 1 sigma Monte Carlo
• Post-TDR continue to ILC goal of 37 nm + fast kicker
• Stabilization studies
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April 25, 2012 KILC 2012: Daegu, South Korea
21
• DTC04 Lattice Evaluations
• Magnet Design & Layout Review
• Costing Meeting DA with
misalignments
& field errors Rubin/
Shanks
Damping Rings I
J. Conway
C. Spencer
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• Mitigating Electron Cloud
• Simulations – electrodes; coating and/or grooving
vacuum pipe
• Demonstration at CESR critical tests
eCloud R&D in Damping Ring
Global Design Effort 22 23-April-12
KILC - Daegu, Korea
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EC Working Group Baseline Mitigation Recommendation
Drift* Dipole Wiggler Quadrupole*
Baseline Mitigation I
TiN Coating Grooves with TiN coating
Clearing Electrodes TiN Coating
Baseline Mitigation II
Solenoid Windings
Antechamber Antechamber
Alternate Mitigation
NEG Coating TiN Coating Grooves with TiN
Coating Clearing Electrodes
or Grooves
*Drift and Quadrupole chambers in arc and wiggler regions will incorporate antechambers
EC Working Group Baseline Mitigation Plan
S. Guiducci, M. Palmer, M. Pivi, J. Urakawa on behalf of the ILC DR Electron Cloud Working Group
• Preliminary CESRTA results and simulations suggest the presence of sub-
threshold emittance growth - Further investigation required
- May require reduction in acceptable cloud density a reduction in safety margin
• An aggressive mitigation plan is required to obtain optimum performance from
the 3.2km positron damping ring and to pursue the high current option
22-Oct-12
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Proposed Design changes for TDR
RDR SB2009 • Single Tunnel for
main linac
•Move positron source
to end of linac ***
• Reduce number of
bunches factor of two
(lower power) **
• Reduce size of
damping rings (3.2km)
• Integrate central
region
Global Design Effort 24 22-Oct-12
LCWS12 - Arlington, TX
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Two Candidate Sites in Asia/Japan
- GDE-CFS group visited two
sites, Oct., 2011
2011年底,日本政府拨款几百万美元 用于日本
ILC两个候选地点的地址勘探工作,并组织49位
专家编写了《ILC – Issues in Construction of
the ILC Facility in Japan》
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27
Grooved Insert for
CesrTA Wiggler
Global Design Effort
Conventional Facilities
22-Oct-12
LCWS12 - Arlington, TX
Japan -- New Tunnel Shape
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31 km, ~100 m deep
P. Oddone – ICFA Seminar, October 3rd, 2011
28
CERN Site to Host Linear Collider
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Access Tunnel ex.
29
1
2
3
4
5
6
7
8
9
10
62.0 61.9 61.9 61.9 61.9
60.3
Cavern ex.
Hall ex.
AH-1 AH-2 AH-3 AH-4 AH+1 AH+2 AH+3 AH+4
120m/week
250m/week
100m/week
Survey & supports set-out Electrical general services Piping & ventilation Cabling Supports Machine installation
Beam Tunnel excavation Concrete Lining
BDS Tunnel excavation BDS Service Tunnel excavation
Invert & Drainage Shield Wall
RTML (1.35k
m)
e-BDS (3.33km)
e+BDS (2.25km)
RTML (1.35k
m)
e- Main Linac (11.19km)
e+ Main Linac (11.07km)
29 22-Oct-12
LCWS12 - Arlington, TX Global Design Effort
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Technical Volumes
Reference Design Report 700 pages total
ILC Technical Progress Report (“interim report”) 165 pages
TDR Part I: R&D
TDR Part II: Baseline Reference Report
Technical Design Report
~250 pages Deliverable 2
~300 pages Deliverables 1,3 and 4
* end of 2012 – formal publication early 2013
AD&I
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EDMS & Tech. Design Documentation
5.10.2011 B. List: Required EDMS Documentation 1
Required Documentation for EDMS
Benno ListDESY
39th AS TAG Webex meeting
5.10.2011Benno List
DESYDamping Ring Technical Baseline Review
Frascati, July 7-8, 2011
22.6.2011
TDR
TDD
Important goal to consolidate all technical documentation in EDMS in a structured fashion
Global Design Effort 31 2-Feb-12
ILCSC - Oxford
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ILC RDR Value Costing
32
Cavity & CM Ass.
RF Sys.
Cryo. & Others
Totalcavity50%
Coupler13%
Tuner6%
SCQuad+BPM4%
Cryostat/coldmass19%
String&CMassembly
8%
ILCRDR
Cavities
GDE-EC, PM-Rep, 120209 ML-SCRF BTR, KEK
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ILC Costs -- Impact of Top Level Changes
Global Design Effort 33 22-Oct-12
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Starting Point is the RDR Costs
Global Design Effort 34 22-Oct-12
LCWS12 - Arlington, TX
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Higgs Factory – Energy
• ~125 GeV from LHC
– 125+91=216 GeV cm 250 GeV
• 173 GeV Top quark
– 2x173=346 GeV cm 350-400 GeV
• Higgs self coupling (t-coupling) ???
– ≥ 500 CM (up to 650 ??)
• TeV and beyond….?
Staging / Upgrading
22-Oct-12
LCWS12 - Arlington, TX Global Design Effort 35
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250 GeV CM (first stage) Relative to TDR 500 GeV baseline
Half linacs solution
G = 31.5 MV/m
Two stage compressor (5-15 GeV)
POSITRON linac straightforward
~50% ML linac cost (cryomodules, klystrons,
cryo etc.)
~50% ML AC power
ELECTRON linac needs 10Hz mode for e+
production
DE = 135 GeV instead of 110 GeV (+25 GeV)
~57% ML linac cost (cryomodules, klystrons
etc)
10Hz needs (1/2 linac × 10Hz/5Hz):
100% ML AC power
(1/2 linac × 10Hz/5Hz)
80% cryo cost
(50% static + 100% dynamic)
Main Linac infrastructure Linac components: 50% Cryogenics: 65% RF AC power: 80%
22-Oct-12
LCWS12 - Arlington, TX Global Design Effort 36
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Y. Okada - CPM12 Fermilab
22-Oct-12
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GDE Conclusions • The major R&D milestones for TDR are in-hand
• The TDR will be a self-contained comprehensive R&D report; with a design based on new baseline; a new value costing; and a section on project implementation planning
• Submit: Dec 2012; Reviews of technical design & costs; – Technical Review by augmented PAC (Dec 2012 at KEK)
– Cost Review by international committee (Jan 2013 at Orsay)
– TDR Overall Review by ILCSC (Feb 2013 at Vancouver)
• Revise, rewrite as needed; finalize and submit to ICFA at LP2013 (June 2013)
GDE Mandate Complete
• Post–TDR ILC program: 1) extend energy reach; 2) systems tests; 3) evolve design based on technology development and LHC results; consider staged design, beginning with Higgs Factory.
Global Design Effort 38 22-Oct-12
LCWS12 - Arlington, TX
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ILCSC Plans FutureLC Board
http://newsline.linearcollider.org/2012/08/23/ilcsc-plans-the-future/
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LC organisation
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• Recent discussions of the European Members of the LCB (5+5+5+1) and soon also advisory group – discussions lead by ECFA chair Manfred Krammer
• Lyn Evans appointed director for the LC efforts (starting in 2013) – ICFA announced in June
Deputy (Physics)
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LC Organization
• Linear Collider Board
– Subcommittee of ICFA
– 16 people, 5 per region + chair
– Transitional organization
– Oversees Directorate. Responsible for
• Advancing science, technology, outreach, organization
• Preparing a single linear collider proposal – With strong support of community ….
– Whose timing and contents will be informed by LHC and other physics data .…
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Linear Collider Board
• LCB will have 16 members and will include the Directors of the world’s HEP labs and 2 members from each region.
• European members will include CERN DG, head of PP at DESY, Dubna DG and 2 representatives nominated by ICFA.
• Probably will set up a European Advisory Board
• Joint meeting of LCB and ILCSC in Vancouver in February.
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LC Organization
• Directorate
– Linear Collider Director
Lyn Evens (CERN)
– Three Associate Directors
• SCRF Accelerator (ILC) (Mike Harrison, BNL)
• Two-Beam Accelerator (CLIC) (Steinar Stapnes , CERN)
• Physics and Detectors (CLIC and ILC) (???)
– Possibly Three Regional Coordinators/Directors
• Americas, Europe, Asia
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ILC
• The ILC TDR and Detector DRD are almost finished.
• They will be reviewed by an extended PAC in December.
• A review of the cost estimate for the machine will be made early in 2013.
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CLIC
• CLIC R&D will continue under the present management in order to prepare a long-term option for CERN.
• The Conceptual design report is almost complete and will include staging options.
• A klystron-based start version is also under study.
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Contents -ILC status -China in ILC -Higgs Factories
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China’s Strategy for Particle Physics
(under discussion)
http://newsline.linearcollider.org/archive/2012/20120607.pdf
2013 ILC Roadmap 香山会议is previewed
From 29 to 30 May, the Institute of High Energy Physics held China’s second Linear Collider
Workshop (CLCWS12) in Xijiao Hotel, Beijing.
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China ILC Accelerator R&D
ILC Damping Ring
1.3Ghz high gradient
9cell SC cavity
Cryomodule
Final focus: ATF2
Positron source
LLRF and
instrumentation
Global parameter
and beam dynamics
High power
coupler
Bunch
compressor
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Developed Key Technologies for ILC
9-cell cavity (IHEP-01), 科学院主页报道 Tuner Large-grain low-loss shape, 20 MV/m KEK slide-jack type
Input coupler LLRF KEK STF type New IQ detection method
12 m Cryomodule for Euro-XFEL PXFEL1 in FLASH; 58 ordered for XFEL
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/ IHEP
IHEP-02 (2012)
PXFEL1
58 Cryomodule
IHEP-01(2010)
IHEP-03(2013)
IHEP-03 (2013)
IHEP-01(2011)
IHEP ILC 1.3 GHz SCRF
International Collaboration IHEP-KEK ILC SRF Webex
meeting every month
Frequent visit to all the Labs
>10 person-month / year
超导加速组元
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Part of IHEP SCRF Lab
CBP (Tumbling) BCP
UPW & HPR Ultrasonic RF Pretuning
Clean Room Vertical Test Stand
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Part of IHEP SCRF Lab
Cavity RF Lab
LLRF Lab
RF Measurement
Inspection Camera
Vertical test Dewar and heat exchanger (in fabrication)
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ICFA Beam Dynamics Workshop – Accelerators for a Higgs
Factory: Linear vs. Circular (HF2012)
Nov. 14-16, 2012, Fermi National Lab, USA
Organizer and program committee
W. R. Chou (Fermi)
K. Yokoya (KEK)
J. Gao (IHEP)
A. Chao (SLAC)
A. Blondel (University of Geneva)
D. Schulte (CERN)
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ILC CLIC SLC NLC LEP3 TLEP
Super- TRISTAN
Fermilab Site-filler
IHEP Ring
LBL/SLAC
Ring
Muon Collider
Collider
Ecm (GeV) L (1034 cm-2s-1) Length (km) Bending ρ (km) Ibeam (mA) Pbeam (MW) ΔEsynch (GeV/turn) Psynch (MW) Pwall (MW) σy, IP (nm) σx, IP (nm) σz, IP (nm) εy,n (mm-mrad) Polarization Damping rings Eacc (MV/m) Ne (1010 per bunch) δB (%, beam-beam) ΔEcm (%, single beam)
N Nhadron Energy upgrade limit
Number of expts. Tech. readiness (yrs) Specific issues
Technical Comparison between Different Types of Higgs Factory (Rev. 10/26/2012)
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ILC TRD Launch Event 2013 ILC TDR Launch Event Organising Committee:
France: F. Le Diberder,
Italy: U. Doselli
Canada: D. Carlen
Fermi lab: Y-K Kim
CERN: S. Stapens; E. Tsesmelis
China: Jie Gao
India: R. Godbole
Korea: Wanbe Park
SLAC: N. Graf
KEK: K. Yakoya.
Date: June, 2012, between DESY LC13 event May 27-31 and the start of
Lepton-Photon on June 24th
Places: KEKCERNFermi
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Contents -ILC status -China in ILC -Higgs Factories
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Difference between a e+e-Linear Collider and a e+e- storage ring collider
02 1 34
max
,
10.7 10 1
b
y IP IP
P MW P MWL cm s R
cm N
Fhourglass
Linear Collider
Storage ring collider
2 2
0exp2 2
hourglass
a a aF K
*
y
l
a
J. Gao, “Emittance growth and beam lifetime limitations due to beam-beam effects in
e+e- storage rings”, Nucl. Instr. and methods A533(2004)p. 270-274.
7 * *
04 10
e b
Dx Dy
x y
N P MWL H H
e m m E GeV
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BHF LEP3
Energy (GeV) 120 120
Circumference (km) 50 26.7
Number of IPs 1 2
SR loss/turn (GeV) 2.9 6.99
Ne/bunch (1012) 2 1
Bunch number 11 4
Beam current (mA) 21 7.2
SR power /beam (MW) 60.5 50
B0 (T) 0.062 0.154
Dipole length (m) 4 5.25
Bending radius (km) 6.4 2.6
Momentum compaction (10-4) 0.5 0.8
Main quadrupole length (m) 1.5 1.0
Arc quadrupole strength k1 (T/m) 10 810
Transverse tune x/y 149/149 未知
Chromaticity x/y -176/-172
IP x/y (m) 0.2/0.001 0.2/0.001
Emittance x/y (nm) 11/0.64 25/0.1
Transverse IP (um) 47/0.8 71/0.32
y/IP 0.102 0.08
V RF (GV) 12 12
f RF (GHz) 1.3 1.3
Harmonic number 215872 114742
z (mm) 1.1 2.3
fs (kHz) 2.36 3.91
Energy spread (%) 0.13 0.23
Energy acceptance (%) 5.9 4.2
L0/IP (1034cm-2s-1) 5.06 1.07
An update for BHF design (50km e+ e- storage ring collider )
D. Wang and J. Gao
2012.11.05
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An update for BHF design (50km e+ e- storage ring collider )
D. Wang and J. Gao
2012.11.05
Chromaticity correction Dispersion suppressor
FODO arc IP section (preliminary design)
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ICFA Beam Dynamics Workshop – Accelerators for a Higgs
Factory: Linear vs. Circular (HF2012)
Nov. 14-16, 2012, Fermi National Lab, USA
Organizer and program committee
W. R. Chou (Fermi)
K. Yokoya (KEK)
J. Gao (IHEP)
A. Chao (SLAC)
A. Blondel (University of Geneva)
D. Schulte (CERN)
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ILC CLIC SLC NLC LEP3 TLEP
Super- TRISTAN
Fermilab Site-filler
IHEP Ring
LBL/SLAC
Ring
Muon Collider
Collider
Ecm (GeV) L (1034 cm-2s-1) Length (km) Bending ρ (km) Ibeam (mA) Pbeam (MW) ΔEsynch (GeV/turn) Psynch (MW) Pwall (MW) σy, IP (nm) σx, IP (nm) σz, IP (nm) εy,n (mm-mrad) Polarization Damping rings Eacc (MV/m) Ne (1010 per bunch) δB (%, beam-beam) ΔEcm (%, single beam)
N Nhadron Energy upgrade limit
Number of expts. Tech. readiness (yrs) Specific issues
Technical Comparison between Different Types of Higgs Factory (Rev. 10/26/2012)
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Concluding remark
① ILC phase I (Higgs factory) is a reasonable choice for the next energy front lepton collider after LHC, with its technical status and energy upgrade ability to ILC Phase II (500GeV) and phase three (1 TeV).
②Chinese storage ring Higgs Factory proposal is interesting in terms of its complementary to ILC phase-I, and forward looking pp collider (50TeV, 50km) in China.
My personal view is that:
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Thank you for your attention!