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J.P.Delahaye CLIC @ IPAC10 (28/05/10) 1
Helsinki Institute of Physics (Finland)
IAP (Russia)
IAP NASU (Ukraine)
IHEP (China)
INFN / LNF (Italy)
Instituto de Fisica Corpuscular (Spain)
IRFU / Saclay (France)
Jefferson Lab (USA)
John Adams Institute/Oxford (UK)
Polytech. University of Catalonia (Spain)
PSI (Switzerland)
RAL (UK)
RRCAT / Indore (India)
SLAC (USA)
Thrace University (Greece)
Tsinghua University (China)
University of Oslo (Norway)
Uppsala University (Sweden)
UCSC SCIPP (USA)
Aarhus University (Denmark)
Ankara University (Turkey)
Argonne National Laboratory (USA)
Athens University (Greece)
BINP (Russia)
CERN
CIEMAT (Spain)
Cockcroft Institute (UK)
ETHZurich (Switzerland)
Gazi Universities (Turkey)
John Adams Institute/RHUL (UK)
JINR (Russia)
Karlsruhe University (Germany)
KEK (Japan)
LAL / Orsay (France)
LAPP / ESIA (France)
NCP (Pakistan)
North-West. Univ. Illinois (USA)
Patras University (Greece)
Towards CLIC feasibilityJ.P.Delahaye for the CLIC collaboration
CLIC multi-lateral Collaboration
38 volunteer Institutes from 19 Countries
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 2
Helsinki Institute of Physics (Finland)
IAP (Russia)
IAP NASU (Ukraine)
IHEP (China)
INFN / LNF (Italy)
Instituto de Fisica Corpuscular (Spain)
IRFU / Saclay (France)
Jefferson Lab (USA)
John Adams Institute/Oxford (UK)
Polytech. University of Catalonia (Spain)
PSI (Switzerland)
RAL (UK)
RRCAT / Indore (India)
SLAC (USA)
Thrace University (Greece)
Tsinghua University (China)
University of Oslo (Norway)
Uppsala University (Sweden)
UCSC SCIPP (USA)
Aarhus University (Denmark)
Ankara University (Turkey)
Argonne National Laboratory (USA)
Athens University (Greece)
BINP (Russia)
CERN
CIEMAT (Spain)
Cockcroft Institute (UK)
ETHZurich (Switzerland)
Gazi Universities (Turkey)
John Adams Institute/RHUL (UK)
JINR (Russia)
Karlsruhe University (Germany)
KEK (Japan)
LAL / Orsay (France)
LAPP / ESIA (France)
NCP (Pakistan)
North-West. Univ. Illinois (USA)
Patras University (Greece)
Towards CLIC feasibilityJ.P.Delahaye for the CLIC collaboration
CLIC multi-lateral Collaboration
38 volunteer Institutes from 19 Countries
Reminder of CLIC objectives and scheme
CLIC feasibility issues
R&D program, status and plans
Preparation of Conceptual Design Report
Outlook to the future
Conclusion
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 3
Objective: explore possible extension of e+/e- linear
colliders into the Multi-TeV colliding beam energy range by
developing most appropriate technology : ECM energy range complementary to LHC =>ECM = 0.5- 3 TeV
L > few 1034 cm-2 with acceptable background & energy spread
Affordable cost and power consumption
Physics motivation: Consensus supported by ICFA of Lepton Collider
(precision) favored facility to complement the LHC
(discovery) in future
"Physics at the CLIC Multi-TeV Linear Collider:http://clicphysics.web.cern.ch/CLICphysics/
Present goals:R&D addressing Feasibility Issues
Conceptual Design (Accelerator & Detector) with preliminary
performance & cost estimations
THE COMPACT LINEAR
COLLIDER (CLIC) STUDY
http://clic-study.web.cern.ch/CLIC-Study
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 4
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 5
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 6
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 7
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 8
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 9
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 10
HEP Electron/Positron Colliders
LEP/CERN
SLC/SLAC
ILC CLIC
1.E+30
1.E+31
1.E+32
1.E+33
1.E+34
1.E+35
0 1 2 3 4
Energy (TeV)
Lu
min
os
ity
(c
m-2
se
c-1
)
CLIC/SLC energy = 20
CLIC/SLC luminosity = 104
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 11
Multi-TeV Linear Colliders challenges
Luminosity
• Beam acceleration: MW of beam power with high gradient and high efficiency
• Generation of ultra-low emittances: micron rad-m in H, nano rad-m in V
• Preservation of low emittances in strong wake field environmentAlignment (micron range)Stability (nano-meter range)
• Small beam sizes at Interaction Point: Focusing to nm beam sizesStability to sub nano-meter
Energy reach
e+ e-
source
damping ring
main linac
beam delivery
• Accelerating structures: large accelerating fields with low breakdown rate
• RF power source: high peak power with high efficiency
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 12
CLIC: specific featuresCLIC TUNNEL
CROSS-SECTION
QUAD
QUAD
POWER EXTRACTION
STRUCTURE
BPM
ACCELERATING
STRUCTURES
Drive beam - 95 A, 300 ns
from 2.4 GeV to 240 MeV
Main beam – 1 A, 200 ns
from 9 GeV to 1.5 TeV
12 GHz – 140 MW
4.5 m diameter
• Novel Two-Beam Acceleration Scheme• Cost effective, reliable, efficient
• Single tunnel, no active power components
• Modular, staged energy upgrade
• High acceleration gradient: > 100 MV/m • “Compact” collider: total length < 50 km at 3 teV
• Normal conducting acceleration structures at
high RF frequency (12 GHz)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 13
CLIC layout 3 TeV
Drive Beam
Generation Complex
Main Beam
Generation Complex
Main & Drive Beam generation
complexes not to scale
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 14
CLIC main parameters
Centre-of-mass energy 500 GeV 3 TeV
Total (Peak 1%) luminosity 2.3(1.4)·1034 5.9(2.0)·1034
Total site length (km) 13.0 48.3
Loaded accel. gradient (MV/m) 80 100
Main linac RF frequency (GHz) 12
Beam power/beam (MW) 4.9 14
Bunch charge (109 e+/-) 6.8 3.72
Bunch separation (ns) 0.5
Beam pulse duration (ns) 177 156
Repetition rate (Hz) 50
Hor./vert. norm. emitt (10-6/10-9) 4.8/25 0.66/20
Hor./vert. IP beam size (nm) 202 / 2.3 40 / 1
Hadronic events/crossing at IP 0.19 2.7
Coherent pairs at IP 100 3.8 108
Wall plug to beam transfer eff 7.5% 6.8%
Total power consumption (MW) 129.4 415
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 15
CLIC critical issues
R&D strategy and schedule
Critical issues classified in three categories: Risk registerhttps://edms.cern.ch/nav/CERN-0000060014/AB-003093
• CLIC design and technology feasibilityFully addressed by specific R&D with results in Conceptual
Design Report (CDR) including preliminary Performance &
Cost by 2011
• Performance and/or Cost Both being addressed now by specific R&D to be completed
with results in Technical Design Report (TDR) including
consolidated Performance & Cost tentatively by 2016
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 16
10 CLIC Feasibility Issues
• Two Beam Acceleration:• Drive beam generation
• Beam Driven RF power generation
• Two Beam Module
• RF Structures:• Accelerating Structures (CAS)
• Power Production Structures (PETS)
• Ultra low beam emittance and beam sizes• Emittance generation & preservation during acceleration and focusing
• Alignment and stabilisation
• Detector• Adaptation to short interval between bunches
• Adaptation to large background at high beam collision energy
• Operation and Machine Protection System (MPS)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 17
CLIC feasibility issues
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 18
Drive Beam GenerationBeam
Intensity &
Frequency
multiplication
X 24
62.5 GeV- 880m
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 19
150 MeV e-linac
PULSE COMPRESSIONFREQUENCY MULTIPLICATION
CLEX (CLIC Experimental Area)TWO BEAM TEST STAND
PROBE BEAMTest Beam Line
3.5 A - 1.4 ms
28 A - 140 ns
30 GHz test stand
Delay Loop
Combiner RingD FFD
DF
F
D F D
D F D
F
F
D
D F D
D F D
DF DF DF DF DF DF DF DF DF
D F D
F DF D
D FFFDD
DF
F
DDFF
FF
D F DD F D
D F DD F D
F
F
D
F
F
D
F
F
D
D F DD F D
D F DD F D
DF DF DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF
D F DD F D
F DF DF DF D
total length about 140 m
magnetic chicane
Photo injector tests,laser Infrastructure from LEP
Addressing all major CLIC technology
key issues in CLIC Test Facility (CTF3)Demonstrate Drive Beam generation(fully loaded acceleration, beam intensity and bunch frequency multiplication x8)
Demonstrate RF Power Production and test Power Structures
Demonstrate Two Beam Acceleration and test Accelerating Structures
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 20
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 21
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING4 A – 1.2 ms
120 Mev @ 1.5 GHz
10 m
RF pulse at output
RF pulse at structure input
1.5 µs beam pulse
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 22
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING4 A – 1.2 ms
120 Mev @ 1.5 GHz
10 m
RF pulse at output
RF pulse at structure input
1.5 µs beam pulse
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
7 A @ 3 GHz
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 23
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING4 A – 1.2 ms
120 Mev @ 1.5 GHz
10 m
RF pulse at output
RF pulse at structure input
1.5 µs beam pulse
28 A @ 12 GHz
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
7 A @ 3 GHz
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 24
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING4 A – 1.2 ms
120 Mev @ 1.5 GHz
10 m
RF pulse at output
RF pulse at structure input
1.5 µs beam pulse
28 A @ 12 GHz
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
7 A @ 3 GHz
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 25
DRIVE BEAM
LINAC
CLEXCLIC Experimental
Area
DELAY
LOOPCOMBINER
RING4 A – 1.2 ms
120 Mev @ 1.5 GHz
10 m
RF pulse at output
RF pulse at structure input
1.5 µs beam pulse
28 A @ 12 GHz
CTF3 completed, operating 10 months/year, under
commissioning:Drive Beam Generation demonstrated
Fully loaded acceleration
RF to beam transfer:
95.3 % measured
7 A @ 3 GHz
Beam intensity multiplication * 8
Beam frequency multiplication * 8
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 26
Drive Beam Generation Feasibility
Drive beam generation feasibility demonstrated
• Intensity stability still to be improved
• Timing stability to be addressed (XFEL collab)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 27
Installation completed
except for PETS in TBL
D FFD
DF
F
D F D
D F D
F
F
D
D F D
D F D
DF DF DF DF DF DF DF DF DF
D F D
F DF D
D FFFDD
DF
F
DDFF
FF
D F DD F D
D F DD F D
F
F
D
F
F
D
F
F
D
D F DD F D
D F DD F D
DF DF DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF
D F DD F D
F DF DF DF D
42.5 m
8 m
2
m
D FFD
DF
F
D F DDUMP
D F D
F
F
D
ITB
1.85m
CALIFES Probe beam injector
LIL-ACSLIL-ACSLIL-ACSD F D
D F D
DFDUMP
0.75
1.4m
1
DUMP
22.4 mTBL
2.5m
Transport path
DUMP
DUMP 22 m
2.0m
DF DF DF DF DF DF DF DF
3.0m3.0m6 m
D F D
F DF D
16.5 mTBTS
16 m
TL2’
42.5 m42.5 m
8 m
8 m
2
m
2
m
D FFFDD
DF
F
DDFF
FF
D F DD F DDUMP
D F DD F D
F
F
D
F
F
D
F
F
D
ITB
1.85m1.85m
CALIFES Probe beam injector
LIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSD F DD F D
D F DD F D
DF DFDUMP
0.75
1.4m1.4m
11
DUMP
22.4 m22.4 mTBL
2.5m2.5m
Transport path
DUMP
DUMP 22 m22 m
2.0m2.0m
DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF
3.0m3.0m3.0m3.0m6 m6 m
D F DD F D
F DF DF DF D
16.5 m16.5 mTBTS
16 m16 m
TL2’
Test Beam Line TBL
Two Beam Test Stand Probe Beam
Drive and probe beams
in CLEX from June 2008
CTF3/CLEX (CLIC Experimental Area)
Test beam line (TBL) to study RF
power production (1.5 TW at 12
GHz) and drive beam decelerator
dynamics, stability & losses
- Two Beam Test Stand to study
probe beam acceleration with high
fields at high frequency and the
feasibility of Two Beam modules
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 28
Power Production Structure (PETS )
design, built @ CERN, power tests @ CTF3, SLAC
Drive beam driven @ CTF3
Klystron driven @ SLAC
CLIC target
266 ns(240 ns CLIC target)CLIC target
CLIC targetCLIC target
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 29
Power Production Structure (PETS )
design, built @ CERN, power tests @ CTF3, SLAC
Drive beam driven @ CTF3
Klystron driven @ SLAC
CLIC target
266 ns(240 ns CLIC target)CLIC target
CLIC targetCLIC target
CLIC
target
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 30
Test Beam Line (TBL)
• High energy-spread beam transport
decelerate to 60 % beam energy
• Drive Beam stability
• Stability of RF power extraction
total power in 16 PETS: 1.5 GW
• Alignment procedures
PETS design
42.5 m
8 m
2
m
D FFD
DF
F
D F DDUMP
D F D
F
F
D
ITB
1.85m
CALIFES Probe beam injector
LIL-ACSLIL-ACSLIL-ACSD F D
D F D
DFDUMP
0.75
1.4m
1
DUMP
22.4 mTBL
2.5m
Transport path
DUMP
DUMP 22 m
2.0m
DF DF DF DF DF DF DF DF
3.0m3.0m6 m
D F D
F DF D
16.5 mTBTS
16 m
TL2’
42.5 m42.5 m
8 m
8 m
2
m
2
m
D FFFDD
DF
F
DDFF
FF
D F DD F DDUMP
D F DD F D
F
F
D
F
F
D
F
F
D
ITB
1.85m1.85m
CALIFES Probe beam injector
LIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSLIL-ACSD F DD F D
D F DD F D
DF DFDUMP
0.75
1.4m1.4m
11
DUMP
22.4 m22.4 mTBL
2.5m2.5m
Transport path
DUMP
DUMP 22 m22 m
2.0m2.0m
DF DF DF DF DF DF DF DFDF DF DF DF DF DF DF DF DF DF DF DF DF DF DF DF
3.0m3.0m3.0m3.0m6 m6 m
D F DD F D
F DF DF DF D
16.5 m16.5 mTBTS
16 m16 m
TL2’
2 standard cells, 16 total
5 MV/m deceleration (35 A)
135 MV output Power
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 31
Fire in CTF3 Klystron Gallery (04/03/10)
Cleaning overall gallery six months delay…..
Modulator in Gallery
Faraday Cage MDK13
Pulse Forming Networkin Faraday Cage
Pulse Forming Networkafter fire
13 = bad luck?
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 32
Beam driven RF Power Generation Feasibility
• RF power generation by single PETS feasibility
demonstrated except for breakdown rate.
• ON/OFF mechanism being built, still to be tested
• Efficient RF power extraction in multiple stages being
addressed in TBL under construction for tests with beam
• Tests delayed to 2011 by CTF3 modulator fire
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 33
Accelerating Structure performance
A shining example of successful collaboration: CERN-KEK-SLAC
• RF design @ CERN
Fabricated @ tested at
SLAC and KEK
• 3 structures no damping:
Exceeded 100 MV/m at
nominal breakdown rate
• 2 structures with damping
slots: Exceeded 100 MV/m
at larger breakdown rate
• Low statistics, high reprod.
• Nominal structure (TD24)
with reduced RF pulse
heating under tests
80 85 90 95 100 105 110 115 12010
-7
10-6
10-5
10-4
10-3
Average unloaded gradient (MV/m)
Bre
ak
do
wn
pro
ba
bilit
y /(m
)
T18 [1] 230 ns, 1400 h
T18 [2] KEK 252 ns
T18 [3] 230 ns, 200 h
TD18 [1] 230 ns, 1000 h
TD18 [2] KEK 252 ns
CLIC goal
CLIC goal: 100 MV/m loaded with BR<3 10-7/m
without
damping
with
damping
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 34
Probe Beam Generation
in CTF3/CLEX (Califes)Klystron and BOC
Photo Injector
Accelerating sections RF deflector for diagnostics
waveguide RF distribution
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 35
Two Beam Test Stand (TBTS)
in CTF3/CLEX
All hardware installed!
Beam in both lines up to end !
Commissioning with beam: PETS 2009, Two Beam Acceleration 2010
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 36
Two Beam Module tests in CTF3/CLEX
36G. Riddone
Test module representing all module types & integrating all various components: RF structures, quadrupoles, instrumentation, alignment, stabilization, vacuum, etc
Tests without beam in 2010-11, with beam in CTF3/CLEX in 2012-13
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 37
Ultra low Beam Emittance Generation
• Key parameter to achieve high
luminosity with limited beam (and
wall plug) power
• CLIC requirements close to new
generation synchrotron light
sources (Operation- Projects)
• CLIC 500 GeV similar as ILC
and demonstrated in ATF/KEK
(normalized emittance)
• CLIC 3 TeV similar as
PEPX/SLAC project.
• Close collaboration with
ATF/KEK (small emittances) and
CESRTA/Cornell (electron clouds)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 38
Extreme importance of Test FacilitiesATF/KEK: ultra low emittance
CLIC Damping Ring
CESR-TA/Cornell:Electron cloud
e+
e-
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 39
CERN/ANKA SC
wiggler
BINP SC
wiggler
BINP PM
wiggler
Parameters BINPCERN/
Karlsruhe
Bpeak [T] 2.5 2.8
λW [mm] 50 40
Beam aperture full gap [mm] 13 13
Conductor type NbTi NbSn3
Operating temperature [K] 4.2 4.2
CLIC
design
Energy [GeV] 2.86
Circumference [m] 493.05
Number of arc cells 100
Number of wigglers 76
RF voltage [MV] 6.5
Damping time x / s [ms] 1.87 / 0.94
IBS growth factor 2.0
Hor. Norm. Emittance [nm.rad] 480
Ver. Norm. Emittance [nm.rad] 4.7
Bunch length [mm] 1.4
Longitudinal emittance [eVm] 3700
CLIC DR based
on SC Wigglers
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 40
Quadrupole Magnets Horizontal Vertical
Linac (2600 quads) 14nm 1.5 nm
Final Focus (2quads) 4 nm 0.5 nm
Beam emittance preservation
Beam Dynamics, alignment and stability
Emittance blow-up from Damping Ring to BDS limited:
• in Horizontal to 30% from 500 nrad
• in Vertical to 300% from 5 nrad
Alignment procedure based on:• Actif pre-alignment of beam line components: 15 µm
• Beam-based alignment (3 µm) using BPMs with good resolution (100nm)
• Alignment of accelerating structures to the beam using wake-monitors
• Tuning based on luminosity/beam size measurement with 2% resolution
Beam stability by quadrupole stabilisation:0.2nm beam-beam stability@IP• quadrupole passive and active stabilisation
• beam feedback (pulse to pulse) and Intrabeam feedback
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 41
Active Pre-Alignment
In CTF2 facility, components maintained aligned in closed loop w.r.t.stretched wire within ± 5 microns, thanks to sensors and micro movers,
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 42
Active Pre-Alignment
In CTF2 facility, components maintained aligned in closed loop w.r.t.stretched wire within ± 5 microns, thanks to sensors and micro movers,
Improved pre-alignment (3 microns) for Two-Beam Module Integration Alignment reference (20km) by overlapping (200m) stretched wires
Validation &Integration inTwo Beam ModuleTest Stand
Girders and quadrupoles positions measured with Wire Positioning System (WPS) and independently pre-aligned by movers in respect with Wires
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 43
Vibration test stand
Nanometer Stabilisation
CLIC small quadrupole stabilizedto nanometer level by active
damping of natural floor vibration
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 44
Test Stands (2 methods) with (future)
real quadrupole prototype (400 kg)
Active stabilisation &
nano-alignment by
Hexapole:
Passive & Active Isolation
Main linac Quad.
specification
1nm
1nm
Main linac Quad.
specification
[Nm RMS]
[Hz]
10
0.1
100
101
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 45
Nanometer beam sizes in KEK ATF2
Final Focus System Diagnosticb mat-ching Extraction line
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 46
Nanometer beam sizes in KEK ATF2
Final Focus System Diagnosticb mat-ching Extraction line
Improved performances to address CLIC issues:
small(er) beam sizes and high(er) chromaticities
R.M.S. Beam Sizes at Collision
in Linear Colliders
ATF2
FFTB
ATF2
Ultra-Low
ILC
500 GeV
CLIC
500 GeV
CLIC
3 TeV
1
10
100
10 100 1000
Horizontal Beam Size (nm)
Ve
rtic
al
Be
am
Siz
e (
nm
)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 47
Machine Detector Interface
Intratrain
feedback
kicker
• FD sub-nm jitter tolerance
• Supports decoupled from detector
& compatible with push-pull mode
• Active feedbacks FD stabilization
• Intra-train feedback (150 nanosec) Tunnel part
Hybrid permanent magnet QD0
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 48
Machine Detector Interface
Intratrain
feedback
kicker
• FD sub-nm jitter tolerance
• Supports decoupled from detector
& compatible with push-pull mode
• Active feedbacks FD stabilization
• Intra-train feedback (150 nanosec) Tunnel part
Hybrid permanent magnet QD0
Mechanical
feedback
Beam
feedback
Feed forward
CLIC
target
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 4949
Detectors in
Push-pull mode
Close collaboration with ILC taking advantage
of advanced ILC detector concepts
Adapted to CLIC technology: Time stamping (0.5 ns between bunches)
Multi-TeV operation (beam-beam background)
49http://www.cern.ch/lcd Lucie Linssen,
15/1/2010
CLIC_Si
D
Length: 6.9m
CLIC_IL
D
Length: 7.1m (not to Scale)
Height:
6.9 mHeight:
7.0 m
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 50
R&D on CLIC feasibility issue:
Operation & Machine Protection System
Taking advantage of LHC experience !
Great synergy with ILC main beam (11MW @ 500GeV)
Common reflection on reliability & availability
Concept based on passive & Real Time protection,
Beam Interlock System & next Cycle Permit.
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 51
CLIC Tentative Schedule
Conceptual
Design Report
(CDR)
Technical
Design Report
(TDR) ?
CLIC CDR and
CLIC TDP proposal
@ CERN Council
Project submission?
European Strategy
for Particle Physics
@ CERN Council
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 52
Extremely fruitful
CLIC /ILC Collaboration• ILC for a TeV LC based on SC RF technology & CLIC
extending LC into Multi-TeV range complementary.
• Common working groups on technical subjects with
strong synergy between CLIC & ILC• making the best use of the available resources
• developing common knowledge of both designs and
technologies on status, advantages, issues and prospects
• preparing together by the Linear Collider Community
made up of CLIC & ILC experts:• proposal(s) best adapted to the future HEP requirements
Joint CLIC & ILC workshop (October 18-22 @ CERN)
(IWLC10: Linear Collider Accelerator and Detectors)
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 53
Conclusion• Novel CLIC technology to extend Linear Colliders into the Multi-TeV beam colliding energy range with promising performances and challenging parameters
• R&D on feasibility issues and concept of 3 TeV multi-TeV Linear collider in a Conceptual Design Report (CDR) by mid 2011
• Ambitious Test Facilities: CTF3, ATF1,2, CESR-TA…
• Exploration to determine LC capabilities & limitations in multi-TeV range
• Technical design phase (five to six years):• engineering design optimization, technological risks & cost mitigation
• Linear collider energy, luminosity and appropriate technology to be defined as the best trade-off following:
• Physics requirements when better known from LHC/Tevatron results
• Design performances, technology risk, power consumption and cost
Warm thanks to outstanding contributions of CLIC collaboration
in the past, present and …. future
Close CLIC / ILC collaboration extremely beneficial for Linear Colliders in preparation for best possible future HEP facility as
requested by Physics and complementary to LHC
J.P.Delahaye CLIC @ IPAC10 (28/05/10) 54
35 CLIC related contributions to IPAC10