Philip Burrows - INDICO-FNAL (Indico) · Philip Burrows John Adams Institute Oxford University On...
Transcript of Philip Burrows - INDICO-FNAL (Indico) · Philip Burrows John Adams Institute Oxford University On...
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CLIC status, plans and outlook
Philip Burrows
John Adams Institute
Oxford University
On behalf of the CLIC Collaborations
Thanks to all colleagues for materials
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Acceleratorcollaboration
Detectorcollaboration
Accelerator + Detector collaboration
31 Countries – over 50 Institutes31 Countries – over 70 Institutes
CLIC Collaborations
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Outline
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• Brief context and introduction
• CLIC Review
• Rebaselining + project staging
• Strategic plans 2019 and beyond
Apologies for skipping many results + details
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CLIC physics context
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Energy-frontier
capability for
electron-positron
collisions,
for precision
exploration
of potential
new physics
that may
emerge
from LHC
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CLIC physics context
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Energy-frontier
capability for
electron-positron
collisions,
for precision
exploration
of potential
new physics
that may
emerge
from LHC
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CERN DG address 18/1/16
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CERN DG address 18/1/16
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CERN DG address 18/1/16
We are vigorously preparing input for European Strategy Update ~ 2019:
• Project Plan for CLIC as a credible post-LHC option for CERN
• Initial costs compatible with CERN budget
• Upgradeable in stages over 20-30 years
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CLIC Review (Spring 2016)
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From Review Mandate – called by Frederick Bordry, director of accelerators and technology
Further to recent discussions held in the framework of the MTP, a review is called by the Director for Accelerators and Technology to assess the current status and in particular provide recommendations on the targets to be achieved that will be instrumental for the next European Strategy Update of 2019. The review will concentrate on the CLIC accelerator programme.
Ranking: High Priority, Some Priority, Low Priority, Terminate
Members of the Review Panel
• ATS Department Heads: P. Collier, JM. Jimenez, R. Losito;
• Oliver Brüning;, Roberto Saban, Rüdiger Schmidt, Florian Sonnemann;
• Maurizio Vretenar (Chair).
Indico link
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CLIC Review report
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Report: some key points
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• Produce optimized, staged design: 380 GeV 3 TeV
• Optimise cost and power consumption
• Support efforts to develop high-efficiency klystrons
• Support 380 GeV klystron-only version as alternative
• Consolidate high-gradient structure test results
• Exploit Xboxes + nurture high-gradient test capabilities
• Develop plans for 2020-25 (‘preparation phase’) + structure
conditioning strategy
• Continuing and enhanced participation in KEK/ATF2
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‘Rebaselining’
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Optimize machine design w.r.t. cost and power for a staged
approach to reach multi-TeV scales:
~ 380 GeV (optimised for Higgs + top physics)
~ 1500 GeV
~ 3000 GeV(working assumptions: exact choices of higher c.m. energies depend on LHC findings)
for various luminosities and safety factors
• Expect to make significant cost and power reductions for the initial
stages
• Choose new staged parameter sets, with a corresponding consistent
upgrade path, also considering the possibility of the initial-stage being
klystron-powered
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Rebaselining:
first stage energy ~ 380 GeV
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New CLIC layout 380 GeV
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1.5 TeV / beam
New CLIC layout 3 TeV
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Current rebaselined parameters
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Current rebaselined parameters
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Preliminary cost estimate (380)
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Klystron version (380)
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Klystron version (380)
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Klystron version (380)
Cost savings
may be possible
(at the 5% level)
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Updated CLIC run model
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CLIC Higgs physics capabilities
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Omnibus paper: about to be submitted for publication
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CLIC Higgs physics capabilities
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Higgs couplings
to heavy
particles benefit
from higher c.m.
energies:
ttH ~ 4%
HH ~ 10%
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CLIC physics capabilities
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Direct new-particle
search reach
up to 1.5 TeV
Indirect search
reach up to
O(100 TeV)
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Rebaselining document
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‘yellow report’ in preparation
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Rebaselining: ongoing studies
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Optimize drive beam accelerator klystron system
Eliminated electron pre-damping ring (better e- injector)
Systematic optimization of injector-complex linacs
Optimize / reduce power overhead estimates
Use of permanent or hybrid magnets for the drive beam
(order of 50,000 magnets)
… … …
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CTF3
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Main achievements of CTF3
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Drive beam generation:
• Linac operation (4A) with full beam loading
• Phase-coding of beam with sub-harmonic buncher system
• Factor of ~8 current amplification by beam recombination
• Power extraction from drive beam at 2 x CLIC nominal
Two-beam test stand + TBL:
• 2-beam acceleration in CLIC structures up to 1.5 x nominal
• Drive-beam stable deceleration to 35% of initial energy
• 12 GHz RF power @ ~ 1 GW in string of 13 decelerators
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Drivebeam,1-3A,100-50MeV
Æ50mmcircularwaveguide
RF
TBL decelerationTwo Beam Module,Wake-field monitors…
Dogleg Beam loading experiment
Phase feed-forward experiment
Diagnostics R&D using CALIFES
CTF3: 2016 last year of operation
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CTF3 programme 2016
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Power production:
stability + control of RF profile (beam loading comp.)
RF phase/amplitude drifts along TBL
PETS switching at full power
beam deceleration + dispersion-free steering in TBL
routine operation
Drive-beam phase feed-forward prototype system
Beam orbit stabilisation/control
…
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Lucie Linssen, March 5th 2015 33
Recently installed 2-beam acceleration module in CTF3(according to latest CLIC design)
drive beam
main beam
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Module mechanical characterisation test stand:
active alignment, fiducialisation + stabilisation (PACMAN)
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• X-band FEL collaboration (preparation for EU-proposal)
• Continuation of the CLIC high-gradient research
• Instrumentation tests (including WFMs)
• Discharge plasma wakefield experiments
CALIFES
• Impedance measurements
• Irradiation facility
• THz production
• General interest from AWAKE (including instrumentation)
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Workshop on exploitation of CALIFES as an e- beam
user facility: CERN 10-12 October 2016
CALIFES workshop
https://indico.cern.ch/event/533052/
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Walter Wuensch, CERNCLIC Project Review, 1 March 2016
CLIC accelerating structureOutside
Inside
6 mm diameter beam aperture
11.994 GHz X-band100 MV/mInput power ≈50 MWPulse length ≈200 nsRepetition rate 50 Hz
Micron–precision disk
25 cm
HOM dampingwaveguide
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Walter Wuensch, CERNCLIC Project Review, 1 March 2016
Performance summary at CLIC specifications
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X-band test stands (CERN)
CPI50MW1.5usklystronScandinovaModulatorRepRate50HzBeamtestcapabili es
Xbox-1
Previoustests:2013 TD24R05(CTF2)2013 TD26CC-N1(CTF2)2014-15 T24(Dogleg)
Ongoingtest:
Aug2015- TD26CC-N1(Dogleg)
OPERATIONAL
Xbox-2
CPI50MW1.5usklystronScandinovaModulatorRepRate50Hz
Previoustests:2014-15 CLICCrabCavity
Ongoingtest:
Sep2015- T24OPEN
OPERATIONAL
Xbox-3
4xToshiba6MW5usklystron4xScandinovaModulators
RepRate400Hz
Mediumpowertests(Xbox-3A):20153D-printedTiwaveguide2015X-bandRFvalve
COMMISSIONINGSpring2016
Majorincreaseintes ngcapacity!
Xboxes
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High-gradient structure tests
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Maximal use of slots in structure test stands:
• Higher statistics on baseline structure design
• Tests of 380 GeV (and FEL) structures
• Simplified structure design (halves, brazing vs. bonding)
• Qualification of industry-produced structures
• 7 structures ready for test
• 6 structures in production
• 30 - 40 tested structures in next 3 years
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• X-band technology appears interesting for compact, relatively low cost FELs – new or extensions– Logical step after S-band and C-band– Example similar to SwissFEL: E=6 GeV, Ne=0.25 nC, sz=8mm
• Use of X-band in other projects will support industrialisation– They will be klystron-based, additional synergy with klystron-
based first energy stage
• Collaborating on use of X-band in FELs– Australian Light Source, Turkish Accelerator Centre, Elettra,
SINAP, Cockcroft Institute, TU Athens, U. Oslo, Uppsala University, CERN
• Share common work between partners – Cost model and optimisation– Beam dynamics, e.g. beam-based alignment– Accelerator systems, e.g. alignment, instrumentation…
• Define common standard solutions– Common RF component design, -> industry standard– High repetition rate klystrons (200->400 Hz now into test-
stands)
Important collaboration for X-band technology
Background (Shanghai Photon Science Center)
Compact XFEL SXFEL
580m
Possible X-band FELs
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• X-band technology appears interesting for compact, relatively low cost FELs – new or extensions– Logical step after S-band and C-band– Example similar to SwissFEL: E=6 GeV, Ne=0.25 nC, sz=8mm
• Use of X-band in other projects will support industrialisation– They will be klystron-based, additional synergy with klystron-
based first energy stage
• Collaborating on use of X-band in FELs– Australian Light Source, Turkish Accelerator Centre, Elettra,
SINAP, Cockcroft Institute, TU Athens, U. Oslo, Uppsala University, CERN
• Share common work between partners – Cost model and optimisation– Beam dynamics, e.g. beam-based alignment– Accelerator systems, e.g. alignment, instrumentation…
• Define common standard solutions– Common RF component design, -> industry standard– High repetition rate klystrons (200->400 Hz now into test-
stands)
Important collaboration for X-band technology
Background (Shanghai Photon Science Center)
Compact XFEL SXFEL
580m
Possible X-band FELs
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Aim to:
• Present CLIC as a credible post-LHC option for
CERN
• Provide optimized, staged approach starting at
380 GeV, with costs and power not excessive
compared with LHC, and leading to 3 TeV
• Upgrades in 2-3 stages over 20-30 year horizon
• Maintain flexibility and align with LHC physics
outcomes
Outlook European Strategy
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CLIC roadmap
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Key deliverables:
Project plan: physics, machine parameters, cost,
power, site, staging, construction schedule,
summary of main tech. issues, prep. phase (2019-
2025) summary, detector studies
Preparation-phase plan: critical parameters, status
and next steps - what is needed before project
construction, strategy, risks and how to address
them
Outlook European Strategy
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Backup
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CLIC energy staging (CDR)
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Energy-staging exercise started for CDR
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CLIC energy staging (CDR)
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AC power (1.5 TeV)
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