Status and prospects for the International Linear Collider · 2015. 2. 5. · 5.1 km 1. 1 k m Main...
Transcript of Status and prospects for the International Linear Collider · 2015. 2. 5. · 5.1 km 1. 1 k m Main...
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Status and prospects for the International Linear Collider
Nicholas Walker (MPY)
263rd Meeting of the WA
20.08.2013
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 2
Introduction
> This talk will focus on the ILC machine status, and the situation in
Japan.
> Discovery of a light Higgs particle @126 GeV by LHC changed the
world physics landscape
Japan was waiting for this “signal”
EU strategy welcomes ILC in Japan
US Snowmass process endorsed ILC in Japan
> I will not discuss physics or detectors
Although DESY’s leadership role in these areas is undisputed.
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 3
central
region
ILC in a Nutshell
> 200-500 GeV Ecm e+e- collider L ~2×1034 cm-2s-1
upgrade: ~1 TeV
> SCRF Technology
1.3GHz SCRF with 31.5 MV/m
17,000 cavities
1,700 cryomodules
2×11 km linacs
> Developed as a truly global collaboration
Global Design Effort – GDE
~130 institutes
http://www.linearcollider.org/ILC
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 4
500 GeV Parameters
Max. Ecm 500 GeV
Luminosity 1.8×1034 cm-2s-1
Polarisation (e-/e+) 80% / 30%
dBS 4.5%
Physics Physics
sx / sy 574 nm / 6 nm
sz 300 mm
gex / gey 10 mm / 35 nm
bx / by 11 mm / 0.48 mm
bunch charge 2×1010
Beam (interaction point)
Beam (interaction point)
Number of bunches / pulse 1312
Bunch spacing 554 ns
Pulse current 5.8 mA
Beam pulse length 727 ms
Pulse repetition rate 5 Hz
Beam (time structure)
Beam (time structure)
Average beam power 10.5 MW (total)
Total AC power 163 MW
(linacs AC power 107 MW)
Accelerator (general)
Accelerator (general)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 5
ILC History
> Pre Global Design Effort
1992 TESLA starts (TTF)
2002 BMBF XFEL decision
2004 ITRP decision
2009 XFEL construction begins
> Since 2005: GDE
2005-2007 Reference Design Report and cost estimate
2008-2012 Technical Design Phase
2012 Technical Design Report and updated cost estimate
> 2013… Linear Collider Collaboration (LCC) and towards Project Realisation (in Japan)
2001
2006
2007
2011
R&D status
report 2013
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 6
GDE Timeline
Reference Design Report (RDR)
GDE
TDR
published
LHC physics
Tech. Design Phase (TDP) 1
TDP 2
LCC
~250 FTE per year (avg)
~2,000 MY ( ~5,000 if pre-GDE included)
~300 M$ globally
Tokyo CERN Fermilab
2005 2006 2007 2008 2012 2009 2010 2011 2013 2014
Global Event
June 12
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 7
ILC TDR: 2,400 signatories worldwide
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 8
Three Projects – One Technology
DESY is THE world-leading
centre for this technology
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 9
FLASH@DESY 9mA Experiment
XFEL ILC
(upg.)
FLASH
design
9mA
studies
Bunch charge nC 1 3.2 1 3
# bunches 3250 2625 7200* 2400
Pulse length ms 650 970 800 800
Current mA 5 9 9 9
Many basic demonstrations:
- heavy beam loading with long bunch trains
- operation close to quench limits
- klystron overhead etc.
Development (LLRF & controls):
- tuning algorithms
- automation
- quench protection etc.
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 10
European XFEL @ DESY
Largest deployment of
this technology to date
- 100 cryomodules
- 800 cavities
- 17.5 GeV
The ultimate ‘integrated
systems test’ for ILC.
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 11
Worldwide Cryomodule Development
CM1 at FNAL NML module test facility
S1 Global at KEK SRF Test Facility (STF)
PXFEL 1 installed at FLASH, DESY, Hamburg
now commencing XFEL production
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 12
Quest for high gradients
> GDE worldwide R&D effort to
establish high-gradient cavity
production
> 6 Now qualified cavity vendors
> XFEL (mass) production
large (~800) unbiased statistical
sample (<10% )
critical for ILC
> ILC-HiGrade programme
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0
2
4
6
8
10
12
14
16
18
11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45
1st&2ndpass
1stpass
yield1st+2ndpass
yield1stpass
yie
ld
# c
avitie
s
MV/m
35 MV/m 25 MV/m
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 13
S1-Global @ KEK (2011)
> S1 G
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 14
Global SCRF Technology
KEK, Japan SLAC JLAB
Cornell DESY LAL
Saclay INFN Milan
IHEP, China ◉ TRIUMF, Canada
FNAL, ANL STFC
BARC, RRCAT India
◉ ◉ ◉ ◉ ◉
◉ ◉ ◉
◉
◉ ◉
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 15
ILC-EDMS and 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
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 16
ILC Design Integration (DESY IPP)
> Complete lattice description of
accelerator
> Automated generation of 3D models
> Integration into tunnel / halls
> Integration of more detailed 3D models
from many sources worldwide
> All in ILC-EDMS
TDD defines the formal technical
baseline for ILC
Now under formal change control
Link to cost estimate (also in ILC-EDMS)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 17
Linear Collider Collaboration
Linear'Collider'BoardProgram'Advisory'
Commi4ee
ICFA
Directorate'Lyn'Evans
Deputy'(Physics)''Hitoshi'Murayama
ILC''Mike'Harrison
Physics'&'Detectors'Hitoshi'Yamamoto
CLIC'Steinar'Stapnes
Regional'DirectorsBrian'FosterHarry'Weerts
FALC
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 18
Staged construction: 250 GeV first phase
5.1 km
1.1
km
Main Linac
bun
ch c
om
p.
2.2 km
1.3
km
BDS
e+
src
IP
central region
15.4 km
• Option 1
• 1/2 RTML long
transfer line
• Common
• Full length tunnel
• BDS
• for 1 TeV
• 1/2 magnets
• 10 Hz mode e-
linac
• Option 2
• 5 km transport
@ 125 GeV
• full RTML long
transfer line
5.1 km
1.1
km
Main Linac
bu
nch
co
mp.
2.2 km
1.3
km
BDS
e+
src
IP
central region
15.4 km
125 GeV transport
quasi-adiabatic energy upgrade
• Complete civil construction for 500 GeV machine
• Install ~1/2 linacs for fist stage operation (and long transport line)
• Capital savings ~25%
• Adiabatic energy upgrade (lower rate cryomodule production)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 19
250 GeV 500 GeV 1 TeV
BDSMainLinac(base)
e+src
IPBC
BDS
e+src
IP
BC
BDS
e+src
IP
BC
BDS
e+src
IP
BC
startcivilconstruc on 500GeVopera ons
500GeVopera ons
Installa on/upgradeshutdown
civilconstruc on+installa on
finalinstalla on/connec on-removalfirst10GeVofbaselinelinac-removal/reloca onofBC-removalofturnaroundetc.
Installa onofaddi onmagnetsetc.
Commissioning/opera onat1TeV
MainLinac(base)
MainLinac(base)
MainLinac(base)
MainLinac(upgrade)
Upgrade scenario included
in TDR.
~50 km machine
Concept: concurrent
construction and operation
(minimum downtime for
physics)
Lumi ~ 3-5×1034 cm-2s-1
PAC ~ 300 MW (limited)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 20
TDR Value Estimate
7.8 Billion ILCU
22.6 Million person-hours
7.8 Billion ILCU
22.6 Million person-hours
1 ILCU = 1 US$ Jan 2012
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 21
Common7%
ElectronSource3%
PositronSource4%
DampingRings6%
RTML8%
MainLinac66%
BDS4%
IR2%
By accelerator
system
TDR Value Estimate
CFS-Civilconstruction 10%
CFS-other 6%
L-bandCavitiesandCryomodules 32%
L-bandHLRF 9%
Cryogenics 7%
Controls 2%
TOTALMainLinac 66%
CFS-Civilconstruc on
18%
CFS-other11%
L-bandCavi esand
Cryomodules35%
L-bandHLRF10%
Cryogenics8%
Installa on1%
MagnetsandPowerSupplies
6%
ControlsandCompu ng
Infrastructrure6%
Instrumenta on1%
DumpsandCollimators
1%
Vacuum1%
NonL-bandRF1%
Areasystemspecific
1%
By technical
system
7.8 Billion ILCU
22.6 Million person-hours
7.8 Billion ILCU
22.6 Million person-hours
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 22
TDR: Japanese site-dependent design
Challenges of a
mountainous terrain
Long horizontal access
tunnels (≤ 1 km)
Almost entirely under
ground installation
Site-dependent design study will
officially start when Japanese
candidate site is announced
(23.08.13)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 23
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 24
Japanese candidate site
Competition in Japan between two sites has been intense
Single site will be formally announced on 23.08
Concept of new “Science City” being evaluated.
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 25
The road to a Japanese ILC
> March 2013: Formal proposal to Science Council of Japan (SCJ)
100’s of proposals across all of science
> May 2013: MEXT requests separate evaluation of ILC
sub-panel of SCJ set-up.
> Report expect ~end of August – what we expect:
science case of ILC 250-500 GeV very good
further studies required for practical scope (2-3 years) of hosting an
international project.
> In parallel
Technical evaluation of two sites by domestic evaluation committee,
outcome reviewed and endorsed by international committee (under LCC).
Formal announcement 23.08 – start of site dependent design study.
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 26
Japanese political support
> Federation of diet members for promotion of the ILC
Established in 2008
Expanded to a multi-partisan group: now ~150 members
> Association of Corporate Executives
Strong statements and endorsements on Japan hosting the ILC
Lobbying government to proceed
> Advanced Accelerator Association for promoting science and technology (AAA)
Established in 2008
Headed by a former CEO of Mitsubishi Heavy Industries: Mr. Nishioka
Hitachi, Toshiba, Mitsubishi, etc.
~90 industries + ~30 universities
> Shinzo Abe (PM, Liberal Democratic Party) strong support for ILC
Mentions ILC twice in its election manifesto
Meeting with Lyn Evens (director LCC)
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 27
A European (in-kind) contributions to the ILC machine?
> Cavity & Cryomodule production infrastructure
> XFEL wisdom and know-how (including
operations)
> Large cryogenics systems (XFEL and LHC)
> International project management experience
(LHC, XFEL…)
Project tools (ILC-EDMS and beyond)
> Other (machine) areas
Damping rings
Beam delivery system
Sources
…
XFEL cold-linac
consortium
CERN LHC
experience
CERN, DESY…
CERN, DESY,
UK, Frascati,
LAL…
Strong synergy
with CLIC
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 28
A European (in-kind) contributions to the ILC machine?
> Cavity & Cryomodule production infrastructure
> XFEL wisdom and know-how (including
operations)
> Large cryogenics systems (XFEL and LHC)
> International project management experience
(LHC, XFEL…)
Project tools (ILC-EDMS and beyond)
> Other (machine) areas
Damping rings
Beam delivery system
Sources
…
XFEL cold-linac
consortium
CERN LHC
experience
CERN, DESY…
CERN, DESY,
UK, Frascati,
LAL…
Strong synergy
with CLIC
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 29
Next Steps (in Europe)
> (Wait for Japan announcement)
> Form an interim European Design Effort
Establish a post-TDR network
Site-specific studies
> Get involved in XFEL construction and commissioning
Important for ILC to maximise knowledge and experience from this unique opportunity
and help XFEL be a success
> Begin in-kind contribution and possible project structure studies
IKC in Europe – scenarios, what does it mean? How much will it cost?
Project structure – how would Europe organise itself as part of the global project?
Funding ?
Currently looking to EU
for possibilities
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 30
Summary
> Publication of the GDE’s ILC TDR has been a major international achievement
Built on >20 years of history
A major and ready-to-go technical design
> DESY’s has contributed enormously
Mostly via XFEL and FLASH synergy
But also more specific ILC contributions
> Situation in Japan exciting
A major science project on the brink of reality
But still hard international negotiations ahead (they have started!)
> Single Japanese candidate host site to be announced Friday
Beginnings of specific site ILC international design study
> Europe (and DESY) well placed to contribute to the ILC hosted by Japan
As part of a European collaboration (probably lead by CERN)
More than just cryomodules
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Nick Walker | ILC Status – DESY WA | 20.08.13 | Page 31
From Hamburg to Japan
tunnel
superconducting linacPOSITRON
superconducting linacELECTRON
cryogenic hall
wiggler-basedpositron source
experimental hall& detetor
"dog bone" damping ring
X-ray FEL facility
HERA
tunnel
superconducting linacPOSITRON
superconducting linacELECTRON
cryogenic hall
wiggler-basedpositron source
experimental hall& detetor
"dog bone" damping ring
X-ray FEL facility
HERA
TESLA 2001
Japan in 2013
It only took ~10 years!
(It may take ~10 more)
But it started here @ DESY