Future Accelerator Projects - PowerPoint Presentation

Slide1

Future Accelerator Projects

The Frontiers of PP; what to do next?StrategyNext Accelerator Technology Challenges for PPConclusion

Roy AleksanNobel SymposiumMay 13-17, 2013

m

H

~

125.5

GeV

Q13 ~ 9°

No direct sign of New Physics in range ~200 – 3000 GeVdepending on type of NP

High

Precision MeasurementsVery High Energy ReachHigh Intensity n Beams

B

s

’

mm

=(3

.2

±1.5)10

-9

Slide2

QuestionsWhat parameters should we measure for probing BSM physics and what precison levels should we aim at?

What energy scale should we aim at exploring to have a reasonable chance to find BSM physics?

What

neutrino beam (E and I) should we aim at building

If

we

cannot do all of the above right away, what is THE priority for the next accelerator

Slide3

High Precision Measurements Very High Energy Reach

High Intensity n BeamsHL-LHC, LC(ILC/CLIC), TLEP,

m-Coll,

gg-coll

HE-LHC:VHE-LHC, CLIC,

m-

Coll

Multi-MW

superBeam,

n-FactoriesProjects discussed/mentioned in the talkProjects

not discussed in the talkProjects already approvedLHC@14TeV,

SuperKEKB, T2K, NuMI…

Slide4

ElectroWeak Symmetry Breaking precision measurementsWith MH all parameters of SM are known!What do we

need to measure now?LHC(300)LHC (3000)ILC (250+350+500)TLEP (240+350)

Comment DmH

(MeV)~100~50~30~7

Overkill for nowDG

H/

GH (DGinv)

5.5(1.2)%1.1(0.3)%

H spin

PPPPDmW (MeV)~10~10~6<1Theo. limits

Dmt (MeV)800-1000500-8002015~100 from theo.DgHVV/gHVV

2.7-5.7%*1-2.7%*1-5%0.2-1.7%DgHff/gHff5.1-6.9%*2- 2.7%*2-2.5%0.2-0.7%D

gHtt

/gHtt8.7%*3.9%*~15%~30%DgHHH/gHHH--~30%15-20%**--Insufficient ?**Sensibility

with 2ab-1 at

500 GeV (TESLA TDR) and needs

to be comfirmed by on-

going more detailed studies

*

Assuming

systemaical

errors

scales

as

statistical

and

theoretical

errors

divided

by 2

compared

to

now

Slide5

ElectroWeak Symmetry Breaking precision measurementsAccelerator Physical quantity LHC 300fb

-1 /exp HL-LHC 3000fb-1 /expApprox. date20212030-35?NH

1.7 x 1071.7 x 108

DmH (MeV)100

50

H/H

----Δ

inv/HIndirect

(? )

Indirect (?)ΔgH/gH6.5 – 5.1%5.4 – 1.5% ΔgHgg/gHgg11 – 5.7%7.5 – 2.7%ΔgHww/gHww5.7 – 2.7%

4.5 – 1.0%ΔgHZZ/gHZZ5.7 – 2.7%4.5 – 1.0%ΔgHHH/gHHH--

< 30% (2 exp.)ΔgH/gH<30%<10%ΔgH/gH

8.5 – 5.1%

5.4 – 2.0%ΔgHcc/gHcc----ΔgHbb/gHbb15 – 6.9%11 – 2.7%ΔgHtt/gHtt14 – 8.7%8.0 –

3.9%

Dmt (MeV)

 800-1000 

500-800DmW (MeV)

~10

Includes

direct

ttH

observation

C

oupling

measurements

with

precisions

:

in the range 6-15%

with

300 fb

-1

in the range 1-4%

with

3000 fb

-1b

LHC

is

the benchmark

Higgs

Factory

Slide6

ElectroWeak Symmetry Breaking precision measurements

 

 

 

SUSY modifies

tree

-

level

couplings

e.g

. Pseudo-scalar A is difficult to find for moderate tanb=5Largest effet

expected for

bb, tte.g. light stop is an important search (hierarchy problem)Compositness All couplings reduced according to compositness scale

Higgs

couplings should

be measured as precisely

as possible!

 

H. Baer, M.

Peskin

et al.

Example : Precision for Higgs couplings

Slide7

µ Mt²µ ln(MH)Verify further the consistency of the Standard Model

Need to improve Mw and MtMH

…What next

M

W= 80.385

± 0.015 GeV

Mt= 173.5 ± 1.0 GeV

Slide8

Study of the Higgs properties, its couplings and the potential

 

H potential

 

 

 

 

Interaction strength varies with energy scale, depends on quantum numbers and particle species

Strong coupling

field self coupling

H

H

H

µ

l

H

H

H

H

µ

l

1/2

M

H

Consistency

Check

Vaccuum instability

l

runs too

Slide9

Study further the Higgs properties and couplings

 

H coupling to fermions µ m

f²

 

Upgrade LHC luminosity (

by factor ~10

)

Improve current and focussing

Build a dedicated « Higgs factory »

e+e- linear or circular colliderDo we have the technology to Study Higgs properties

 

H

ffµ Yn

Slide10

Search of new particles

A statistical presicion of 15% on the SM VBS contribution (i.e. VV+ 2 forward jets) can be obtained with HL-LHC

High energy and luminosity are necessary

to probe the VLVL scatteringand verify

that unitarity is preserved

, thanks to the « 

Higgs » discovered

Sensitivity on SUSY can be

signicantly

improved … in particular for stop

Slide11

High-priority large-scale scientific activities (1)Recommendations from European

Strategy GroupRecommendation #1c) The discovery of the Higgs boson is the start of a major programme of work to measure this particle’s properties with the highest possible precision for testing the validity of the Standard Model and to search for further new physics at the energy frontier. The LHC is in a unique position to pursue this programme. Europe’s top priority should be the exploitation of the full potential of the LHC, including the high-luminosity upgrade of the machine and detectors with a view to collecting ten times more data than in the initial design, by around 2030. This upgrade

programme will also provide further exciting opportunities for the study of flavour physics and the quark-gluon plasma.

Slide12

Increase beam current a protect SC dipole (diffracted protons)Reduce beam size at IP

a Larger aperture quads near IP Protect Electrical Distribution Feedbox’s (DFBX)Improve and adjust the luminosity with beam overlap control8T-15m (20 magnets) a 11T-2x5.5 m dipoles

Change Quadrupole Triplets

a 140T/m, 150mm (13T, 8m)

a 2

100

kA ~500m HTS links

a SC RF «Crab» Cavity, for

p-beam rotation at

fs level!Strong R&D on these issues is necessaryVery substantial programme a collaborative R&D

neededAll this work is a first step toward

higher energy

Slide13

5.5 m Nb

3

Sn

3.5 m Collim

5.5

m

Nb

3

Sn

Fermilab

/CERN Collaboration

Demo single bore 11T , 2m

Test: very good to 10.4 T

Next model twin-bore by beginning of 20138T-15m a 11T-11m dipoles

Upgrading LHC luminosity early 2020’s

Increase beam current a protect SC dipole (diffracted protons)

Reduce beam size at IP a

Stronger focussing quads near IP Change Quadrupole Triplets200T/m, 70mm (~8T, <6m>)a 140T/m, 150mm (13T, 8m)

Slide14

Target parameters for HL-LHC runEfficiency is defined as the ratio between the annual luminosity target of 250 fb-1

over the potential luminosity that can be reached with an ideal cycle run time with no stop for 150 days: trun= tlev+tdec+tturn. The turnaround time after a beam dump is taken as 5 hours, t

decay is 3 h while t

lev depends on the total beam current

baseline

Slide15

G.L. Sabbi , LBNLHQ

LQS-4mLARP (US LHC program) MagnetsTest:~200T/m

13T

Test:~220T/m

~11T

Slide16

Protection of Electrical Distribution Feedbox’s (DFBX)IP5

Q3,Q2,Q1DFBXD14.5 K1.9 K3 m

In the tunnel, feed power from room temperature power converters to

the « cold world » of LHC. Actual LHC use short Nb-Ti links.

To be decided

Note: LHC uses 1400 Bi-2223

current leads

Need to be protected against radiation and provide easier access

HTS links

2100 kA~500m HTS linksMove DFBX on surface

Slide17

Φ = 62 mm

Nexan Cryoflex® line (20 m long semi-flexible cryostat of link) procured and installed in the CERN SM-18 laboratory 20 kA – 4 to 80 K test A. Ballarino, CERN

On going HTS link test at CERNMgB

2, YBCO… testsstarted end 2012Possible cable configuration for high current :

7 × 14 kA, 7 × 3 kA and 8 × 0.6 kA cables Itot120 kA @ 30 K

HTS cabling

2m long MgB2 cables testedat 2x4500A

Very encouraging

results

:16kA reached with MgB2 in 20m cryostat

Slide18

« Crab » Crossing

Z

μμ

event from 2012 data with 25 reconstructed vertices

Improving further the luminosity by better overlap of the 2 beams

Also help to adjust the luminosity to ease experiments’ life (Luminosity levelling)

Effort at SLAC-ODO and in BNL, USA

Effort in Daresbury (Cockcroft Institute and STCF) with CERN.SC RF «Crab» Cavity, for p-beam rotation

at fs level!

Technology pioneered successfullyon KEKB, Japan

Slide19

UK - Cockcroft USA (ODU)

Progress in SC « Crab » Cavities

Y. Yakovlev et al.

Several types

of prototypes

being designed

and made…

~250 mm outer radius

L. Xiao et al.

… as well as cryomodule

Slide20

Recommendations from European Strategy Group (cont’d)Recommendation #2

High-priority large-scale scientific activities (2)d) To stay at the forefront of particle physics, Europe needs to be in a position to propose an ambitious post-LHC accelerator project at CERN by the time of the next Strategy update, when physics results from the LHC running at 14 TeV will be available.

CERN should undertake design studies

for accelerator projects in a global context, with emphasis on proton-proton and electron-positron

high-energy frontier machines. These design studies should be coupled

to a

vigorous accelerator R&D programme, including high-field magnets and high-gradient

accelerating structures, in collaboration with national institutes, laboratories and universities worldwide.

Slide21

Grand unification of Interactions (Strong, Weak, Electromagnetic)Additionnal particles (such as supersymmetric partners) with energy scales of TeVs affect the running of the coupling constantsNeed to explore higher energy regions (up to ~10 TeV)

 

 

 

Slide22

Whatever is found or not, reaching higher energies is unavoidableIt will

also allow more precise SM measurementsTo search for

new particles up to 10 TeV, very high energy (>50TeV)

is necessaryTo probe VL

VL

scattering up to 10

TeV region, very high energy is necessary

D

gHtt

/gHtt<1%DgHHH/gHHH<5%Coutesy M. Mangano

Slide23

Either using existing

LEP/LHC tunnel to reach 26-32 TeV collisionsOr build (or reuse) a 80km tunnel to reach 80-100 TeV collisions VHE-LHC

a more detailed study of such a tunnel needed

In both cases, SC challenge to develop 16-20 Tesla magnets!Magnets for HL_LHC is an indispensible

first step

The

detailed study of such

a machine is

needed,

including the complete injection chain (no major difficulties expected)Strong R&D on these new very high field magnet is

necessarya collaborative R&D neededVHEVHE-LHC

Slide24

First consistent conceptual designMagnet design: 40 mm bore (depends on injection energy: > 1 Tev)Approximately 2.5 times more SC than LHC: 3000

tonnes! (~4000 long magnets)Multiple powering in the same magnet for FQ (and more sectioning for energy)Only a first attempt: cos and other shapes needs to be also investigatedL. Rossi

Using multiple SC material

20 T field!

Slide25

Slide26

ElectroWeak Symmetry Breaking precision measurementsIs Higgs self-coupling (l) as expected?

H

HH

µ lH

H

H

H

µ

l1/2MH

HHH

LHCLepton collider(<TeV)One of the most difficult measurement both at LHC and LCXsections

very

low Lumi3000 fb-12000 fb-1EnergyLHC 14 TeVLHC100TeVLC 600 GeVLC 1000 GeVModes (fb)# evs (fb)# ev

s (fb)

# evs (fb)

# evHHZ34

102 00014204260 0000.163200.12240

HH

nn

-

-

0.02

40

0.10

200

Total

34

102 000

1420

4260 000

0.18

360

0.23

440

D

g

HHH

/

g

HHH

~30%

<5%

15-20%

15-20%

High

energy

pp collisions

very

useful

Slide27

ElectroWeak Symmetry Breaking precision measurementsLepton colliders allows clean absolute

measurements!

At

240

GeV

,

s

HZ

~250 fb

-1@Lepton colliders, coupling measurements with precisions:in the range 1.5-4% LCin the sub% level with TLEP

Note: s (mm’H) @ 125GeV = ~20pb

Slide28

e+e- colliders «clean HIGGS FACTORIES»

Slide29

Gradient Range Yield GainEnergy CM (GeV)2505001000

Luminosity (x1034cm-2s-1)0.751.83.6Beam size (sx/s

y nm)730/8

470/6480/3Pulse duration (ms)

0.750.750.9

Beam power (MW)8.4

10.527.2Total AC power (MW)

158162300

ILC

Cavity Gradient (MV/m)31.5#9-Cell cavities~16000#Cryomodules (2K)~1800#RF units (10MW Kly)~560500GeV~30km

Slide30

Some further ILC challengesFebruary 2012 sy=166±7 nmAchieving and maintaining nano beam size (sy =6-8nm) with 2x1010 e/bunch

Dec. 2012 sy=72±5 nm with low b-intensity (2x109 e/bunch)ATF2 operating since 2009 at KEK objective: 37nm @1.28 GeV

Realization of very low emittance

damping rings with ultra fast kickers for extractionAchieving the required positron rate

photons from 150 GeV beam through

150m of small-aperture SC undulator

or 125 GeV beam through 250 m of SC undulators

Industrialization of technology

at very high

scaleXFEL =5% of ILCTIARA collaboration with SLS @PSI (<1pm @2.86 GeV)Strong R&D on these issues is on-going

Carried out by international collaborative Several issues still being addressedProposal

from the Japanese physics community

Slide31

Two Candidate Sites in Japanese mountainous locations

SEFURI

5 m

Japanese HEP community proposes to host ILC based on the “staging scenario”

to the Japanese Government

.

Slide32

CLICInternational collaboration around CFT3 @CERN

Achieving very high gradiant (100Mv/m) with

low enough breakdown rate (<10 -6 )

Demonstrated with a few cavities

Energy CM (

GeV)

5003000Luminosity (x1034cm-2

s-1)2.3

5

Beam size (sx/sy nm)202/2.340/1Pulse duration (ns)177155Beam power (MW)4.914Total AC power (MW)270589

Slide33

Some further CLIC challengesSame type of difficulties as for ILC though more severe, e.g.smaller beam size (~1nm)Shorter bunch length (150ns)Normalized y emittance ~20nm and its preservationUltra

precise alignment and magnet stabilizationSome difficulties are specific to CLIC, e.g.Production of RF powerStable deceleration of drive beamAnd main beam acceleration

Although a lot of progress have been achieved, still a lot of R&D needed to deliver a TDR

Strong R&D on these issues is

on-going

Developed

by international collaborative

Slide34

Energy CM (GeV)90160240350Luminosity (x1034cm-2s-1)/IP

5616~5~1.3Cavity Gradient (MV/m)20202020#5-cell SC cavities

600600600

600Beam lifetime (mn)67

251627

Total

AC power (MW)250250260

284

TLEP Ring

e+e- collider: Primary Cost Driver Tunnel: ~2/3 cost80 km tunnelLEP/LHCBuilding on existing technologies and experience (LEP, KEKB, PEPII…)Could cover a wide range of energy up to 350 Gev collision energy.Using SC cavities

Most parameters have been achieved or are planned at SuperKEKB

Slide35

circular Higgs factories around the world

LEP3 2011

SuperTristan

2012

LEP3 on LI, 2012

LEP3 in Texas, 2012

FNAL site filler, 2012

West Coast

design, 2012

Chinese Higgs

Factory, 2012

UNK Higgs

Factory, 2012

Slide36

An important parameter is the power per unit of luminosity*Luminosity not corrected for peak1% factor

Slide37

a Need to study the energy acceptance of the collider (>2.5%) a optic design is challengingAlthough based on

strong experience in building circular collider, several challenges have to be overcome:Beamstrahlung: a Beam lifetime reduction (should not be much smaller than

bhabha scattering limits

Bremstrahlung: a Need to study heat extraction and radiation damage and shielding

issuesTop up ring: a

Need to

study the injection system Idea

is rather new

triggered

by low Higgs mass but based on long and mature experience in circular colliderssuperKEKB is a very effective technology test case

Promising possibility a need to set up a international study

t>4 s at h=1.5% (4 IPs)t

>50 s at

h=2.0% t>6mn at h=2.5%t>27mn at h=3.0%t>10mn at superKEKBExplore synergies for a

Very Large Collider

Complex

e+

e-, pp, ep?

Slide38

Slide39

ElectroWeak Symmetry Breaking precision measurements require very high luminosity

Slide40

ElectroWeak Symmetry Breaking precision measurementsAccelerator Physical quantity HL-LHC 3000fb

-1 /expILC (250)250 fb-1 ILC (250+350+1000)LEP3240 4 IPTLEP240 +3504 IP

Approx. date2030-35

2030-35?>2045?2035?

2035?N

H

1.7 x 1085 104 ZH(10

5 ZH) (1.4 105 Hvv)

4 105ZH

 2 106 ZH DmH (MeV)503535267H/H--10%

3%4%1.3%Δinv/HIndirect (?)1.5%

1.0%0.35%0.15%ΔgH/gH1.5% -- 5%3.4%

1.4%

ΔgHgg/gHgg2.7%4.5%2.5%2.2%0.7%ΔgHww/gHww1.0%4,3%1%1.5%

0.25%

ΔgHZZ/gHZZ

1.0%

1.3%1.5%0.65%0.2%

Δg

HHH

/g

HHH

< 30%

(2 exp.)

--

~30%

--

--

Δg

H



/g

H



<

10%

--

--

14%

7%

Δg

H



/

g

H



2.0

%

3,5%

2.5%

1.5%

0.4%

Δg

Hcc

/g

Hcc

--

3,7%

2%

2.0%

0.65%

Δg

Hbb

/g

Hbb

2.7

%

1.4%

1

%

0.7%

0.22%

Δg

Htt

/g

Htt

3.9

%

--

15%

--

30%

D

m

t

(MeV)

 

500-800

--

 

20

--

 

15

D

m

W

(MeV)

~10

--

~6

--

< 1

Slide41

ElectroWeak Symmetry Breaking precision measurementsSame assumptions as for HL-LHC for a sound comparisonNo exotic decay, fixed decay width

Slide42

ElectroWeak Symmetry Breaking precision measurements

Same conclusion when GH is a free parameter in the fitPlot shown only for ILC350 and TLEP, with an accurate width measurement TLEP : sub-percent precision, adequate for NP sensitivity beyond 1 TeV

Slide43

 LEP2 LHeCTLEP-ZTLEP-WTLEP-HTLEP-t

beam energy Eb [GeV] circumference [km] beam current [mA] #bunches/beam #e−/beam [1012] horizontal emittance [nm] vertical emittance [nm] bending radius [km] Momentum comp. α

c[10−5] SR power/beam [MW] β

∗x [m] β∗y [cm] σ∗x [

μm] σ∗y [μm]

hourglass Fhg

ΔESRloss/turn [GeV] 104.526.7

442.3480.25

3.118.5

111.552703.50.983.416026.710028085652.52.68.1440.181030160.990.4445.58011804400196030.80.07

9.09.0500.50.11240.270.710.048080124600

2009.40.029.02.0500.50.1780.140.750.41208024.38040.89.40.02

9.01.0

500.50.1680.140.75 2.0175805.4129.010 0.019.01.05010.11000.10.659.2TLEP parameters -1soon at

SuperKEKB:b

x*=0.03 m, bY

*=0.03 cm

SuperKEKB:

e

y

/

e

x

=0.25%

Slide44

 LEP2 LHeCTLEP-ZTLEP-WTLEP-HTLEP-t

VRF,tot [GV] dmax,RF [%]ξx/IP ξy/IPfs [kHz] Eacc [MV/m] eff. RF length [m] fRF [MHz] δSRrms [%]

σSRz,rms [cm] L/IP[1032

cm−2s−1] number of IPs b.lifetime [min]

3.640.770.0250.065 1.6

7.5485352

0.221.611.2543600.5

0.66N/AN/A0.6511.942

7210.12

0.69N/A1N/A2.04.00.070.071.2936007000.060.1956004672.05.50.100.100.453

6007000.100.2216004256.09.40.100.100.44

106007000.150.1748041612.04.90.100.100.4320600

700

0.220.25130420TLEP parameters -2LEP2 was not beam-beam limitedLEP data for 94.5 - 101 GeV consistently suggest a beam-beam limit of ~0.115

Lifetime

at superKEKB = 10 min

Slide45

ILC – CLIC – LEP3/TLEP main parametersWall plug power = 250-280MW

Slide46

ElectroWeak Symmetry Breaking precision measurementsUltra

precise Z pole measurementsallow one to reduce drastically theerrors on « LEP1+SLC elipse »Significant

reduction of error on M

w is possible @WW threshold

Now

LHC

ILCLCLC# Z @ 90GeVMega Z-Giga

ZTera Zs(M

w) @ 160 GeV

~15 MeV~10 MeV~6 MeV<1MeVZ polestudiesMw

??

Are electroweak data compatible with this « Higgs »?Z polestudiesMw

M

t 

Lepton

collider

Slide47

Many other accelerator R&D topics have not been discussed here e.g. e-p collider, gg collider, m collider, plasma acceleration…They should not be forgotten…

…but at present either the physics reach is deemed limited and/or lead time seems too longProton-proton and electron-positron colliders appear as most promissing/practical options

Slide48

Higgs Factories

Linear Collider

Plasma Wakefield

Circular Collider

Muon Collider

g-g

Collider

Technical Maturity

Proj

launch/First beam



2018/2027



?2020/2030



?



2025/2035

Engineered

design readiness



ILC









Size (km)



13-50



2.5



20-80



1.5(0.3)



10

Cost

(BCHF

)



8-10



?





6

-7



?



?

Power

(MW) Consumption



128-235



133



280



200



?

Energy Resolution



10

-2



Few 10

-2



10

-3-

10

-6



10

-5



?

Polarisation



80/30



?/?





@

low E only



15-15



?/?

MDI









background



laser

Energy (

TeV

)

Upgradability



1-3



3





0.35e-

/100 p+



3-6



1-2

Power

@

Emax

~300-600

~320

~200

~280

?

Slide49

Recommendations from European Strategy Group (cont’d)Recommendation #3

High-priority large-scale scientific activities (3)e) There is a strong scientific case for an electron-positron collider, complementary to the LHC, that can study the properties of the Higgs boson and other particles with unprecedented precision and whose energy can be upgraded. The Technical Design Report of the International Linear Collider (ILC) has been completed, with large European participation. The initiative from the Japanese particle physics community to host the ILC in Japan is most welcome, and European groups are eager to participate.

Europe looks forward to a proposal from Japan

to discuss a possible participation.

Slide50

Particle – antiparticle AsymmetryAny interaction able to differentiate a particle and its antiparticle?Essential to generate a Universe dominated by matter (over antimatter)!

)

 

Phenomenon initially observed in

s

quark decays in 1964 but underlying process was not experimentally understood Observation of dissymmetric behavior in 2001 in

b quark decays (BaBar, Belle) a Electroweak interactions

are responsible

 Explained through interference mechanisms because:Physical quarks are superpositions of flavor states e.g.

 All quark masses

$ at least 3 families of quarks !!!  Thanks to H

Slide51

Unfortunately the particle/antiparticle asymmetry generated at the electroweak scale by the SM in quark sector is too small to explain matter/antimatter asymmetry in UniverseMay be different in lepton sector?Good news is however that mechanisms exist in NaturePhysical neutrinos are superpositions of flavor states (neutrino mixing observed with cosmics, reactors and accel.)$ at least 3 families of leptons !!!

All lepton masses possibly  

H

n

n

 

Scenario 1

Search for asymmetric behavior of neutrino vs antineutrino

Search for heavy neutrinos (at high energy accelerators)

New particles @ high energy scale

n are their own antiparticle (Majorana type)

Hnn

 

HScenario 2 Not possible with charged fermions

Distinct

n and anti-

n(Dirac type neutrino)

Slide52

From neutrino superBeams toward n-factories

Multi-MWSC cavities5-10 GeV

~2 K~300K

5MWESS

Cavity type

Gradient

#cav.(cell)#cryomod.Spoke8 MV/m48(2)16Ellip. 1

~14 MV/m36(5)9Ellip. 2

~21 MV/m112(5)

14Do we have technology for multiMW proton driver ? Indeed, see for examplen,m 

Goal: >1021 m/yearstoredFast

Slide53

More generally, we are going toward very high power proton accelerators a useful to many applications

Courtesy of Mike Seidel, PSISC cavities are vital

Slide54

Do we have technology for cooling the muons? Ionization coolingDemonstrator being constructed

MICE @RALCooling section consists of 100 cells 0.75m in length (total length 75m)100 RF cavities (15MV/m) operating in high magnetic field100 superconducting 0.15m coils (2.8T)On-going R&D by international collaborative

Maintaining a Strong

R&D on these issues is important

A project like

nuStorm is also an

interesting idea

to test

muon storing and decays to nHowever, thanks to large q13 value, conventional beam based on high power proton beam

(~1MW) can be usedThe key issue : beam cooling

Slide55

Recommendations from European Strategy Group (cont’d)Recommendation #4

High-priority large-scale scientific activities (4)f) Rapid progress in neutrino oscillation physics, with significant European involvement, has established a strong scientific case for a long-baseline neutrino programme exploring CP violation and the mass hierarchy in the neutrino sector. CERN should develop a neutrino programme

to pave the way for a substantial European role in future long-baseline experiments. Europe should explore the possibility of major participation in leading long-baseline neutrino projects in the US and Japan.

Slide56

From n-factories toward the “dream” of muon collider

Require much smaller beam size (i.e. lower emittance) Very efficient cooling 

Some ultra-challenging components: Very high field solenoids (20-30T)High gradient cavities in multi-Tesla field

1-2x104 H/Year

If cooling demonstrated

!

Slide57

From e+e- Higgs factory to e-e-

/gg colliderMain issues:Laser with required

power and rep. rateDevelop the IR and the Machine Detector Interface (MDI)

s(H)=200fb

Slide58

Conclusion

The last few years were very excitingMany teams have contributed to this success, they have to be warmly congratulated Thanks to this work,

prospects for the Future looks very promising, with many new ideas emerging

The European Strategy was an opportunity to bring these ideas on the table and provide further momentum toward our quest for understanding the fundamental laws of the Universe

The Strategy is an important opportunity to open up a medium and long term ambitious vision and

programme

for Particle Physics in Europe : Top priority in the Strategy

Accelerator R&D is vital to enable the realization of our vision

once we get the results of the LHC runs @ 13-14TeV and should remain at

the highest priority within our strategy

Slide59

My Conclusion

I have a DreamE=mc²

Extended

Multiprobe Collider Complex

Slide60

My Conclusion

PSB

PS (0.6 km)

SPS (6.9 km)

LHC (26.7 km)

TLEP

: e+e

-, up to √s ~350 GeV

VHE-LHC : pp, √s ~ 100 TeVIncluding possiblyep collisions(CERN implementationE=

mc²

Slide61

My Conclusion

AcceleratorPhysicsExperimentsAccelerator

Physics

Experiments

TLEP

VHE-LHC

E=mc²

Slide62

My Conclusion

Ambitious milestones should be set upCDR in 2 yearsTDR in 5 years, in a timely fashion with an update of the European Strategy in 2017-18, after the first round of operation of the LHC@13-14 TeV

2010

2015

2020

2025

2030

2035

2040

LHC

HL-LHC

R&D + constr

TLEP*

Design + R&D + construction

VHE-LHC*

Design

+ R&D + construction

ILC

Design

+ R&D + construction

*tentative

timeline

;

similar

timeline

applies

for LEP3/HE-LHC but installation

requires

stopping

LHC

A possible timeline should be discussed

Slide63

My Conclusion

TLEP

Indirect:M

H

=94.0 ± 1.5Direct: MH=125.500

±0.007

Note: This

is indicative, a careful analysis

still to

be carried outActual MH

Slide64

TLEP