ILC Status and Higgs Factory J. Gao -...

ILC Status and Higgs Factory

J. Gao

IHEP

Tsinghua LHC 2012, Nov. 12, 2012 Tsinghua University,Beijing, China

Contents -ILC status -China in ILC -Higgs Factories

Contents

-ILC status -China in ILC -Higgs Factories

ILC Layout (TDR)

ILC Main Parameters （2011） light Higgs new physics

ILC-TDR: Baseline Parameters

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

• 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

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

ILC Main Accelerator Systems

• Superconducting Accelerator (SCRF)

• BDS-ATF2

• Damping Ring

• e+ source

• RTML and ML beam dynamics

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

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

Yearly Progress in Cavity Gradient Yield

13 22-Oct-12

LCWS12 - Arlington, TX Global Design Effort

S-1 Global – plug compatible

14 22-Oct-12

LCWS12 - Arlington, TX Global Design Effort

S-1 Global – plug compatible

15 22-Oct-12

LCWS12 - Arlington, TX Global Design Effort

S-1 Global cryomodule assembly

S-1 Global

Achieved gradients

S-1 Global – plug compatible

16 22-Oct-12

LCWS12 - Arlington, TX Global Design Effort

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

Fermilab – NML SRF

Systems Tests

Fermilab NML: RF Unit Test Facility

Global Design Effort 18 23-April-12

KILC - Daegu, Korea

ATF2 – Beam size/stability and kicker tests

IP Shintake Monitor

Final Doublet

Global Design Effort 19 22-Oct-12

LCWS12 - Arlington, TX

ATF-2 earthquake recovery

22-Oct-12

LCWS12 - Arlington, TX Global Design Effort 20

• 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

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

• 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

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

LCWS12 - Arlington, TX Global Design Effort 23

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

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》

27

Grooved Insert for

CesrTA Wiggler

Global Design Effort

Conventional Facilities

22-Oct-12

LCWS12 - Arlington, TX

Japan -- New Tunnel Shape

31 km, ~100 m deep

P. Oddone – ICFA Seminar, October 3rd, 2011

28

CERN Site to Host Linear Collider

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

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

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

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

ILC Costs -- Impact of Top Level Changes

Global Design Effort 33 22-Oct-12

LCWS12 - Arlington, TX

Starting Point is the RDR Costs

Global Design Effort 34 22-Oct-12

LCWS12 - Arlington, TX

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

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

Y. Okada - CPM12 Fermilab

22-Oct-12

LCWS12 - Arlington, TX Global Design Effort 37

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

ILCSC Plans FutureLC Board

http://newsline.linearcollider.org/2012/08/23/ilcsc-plans-the-future/

LC organisation

40

• 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)

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 .…

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.

42

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

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.

44

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.

45

Contents -ILC status -China in ILC -Higgs Factories

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.

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

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

/ 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

Part of IHEP SCRF Lab

CBP (Tumbling) BCP

UPW & HPR Ultrasonic RF Pretuning

Clean Room Vertical Test Stand

Part of IHEP SCRF Lab

Cavity RF Lab

LLRF Lab

RF Measurement

Inspection Camera

Vertical test Dewar and heat exchanger (in fabrication)

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)

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)

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

Contents -ILC status -China in ILC -Higgs Factories

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

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

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)

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)

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)

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:

Thank you for your attention!