Post on 11-Jan-2016
EuCARD EuroNNAc Workshop
Summary Session 1:Introductory Presentations
P. Collier
Session Presentations
Goals of the Network and Workshop R. Assmann
Accelerator R&D as Driver of Innovation R. Heuer
History and Outlook for Plasma Acceleration T. Toshi
Modern Lasers and Novel Acceleration Methods G. Mourou
Accelerator R&D for Particle physics S. Myers
Status Report Asia Z. Sheng
Status and Plans US (Beam Driven) M. Hogan
Status and Plans US (Laser Driven) E. Esarey
Very Dense session … A huge amount of information to compress into a short summary
Workshop and Network Goals
Conventional metallic RF structures are fundamentally limited!
Plasma walls cannot be destroyed!
The dream:
Build accelerators 100-1000 times more compact.
o A compact synchrotron light accelerator (FEL, …) for each
university lab and industry!
o Compact (and affordable) TeV colliders for high energy physics.
o Compact medical accelerators.
P.Collier Session 1 Summary
… but also very diverse
Plasma Science
Laser Science
Accelerator Science
EuroNNAc
Build bridges
Identify synergies
Define roadmap
European proposal
for facility
Ultra-fast Science
European Network for Novel Accelerators
Many challenges:
o Different notations, language and scientific cultures.
o Different goals (scientific achievement versus building
operational accelerators).
o More centralized “big science” versus more decentralized
university-based research.
o Complex, inter-disciplinary science problems.
P.Collier Session 1 Summary
Network Goals
• Comparison of different methods to drive plasma wakefields and dielectric structures: lasers, electron beams, proton beams.
• Description of required R&D that is still needed for verifying various technologies and establishing the required technological basis.
• Roadmap towards a novel beam test facility with first test applications (medical, synchrotron, ultra-fast science).
• Roadmap towards high energy physics applications with intermediate applications for applied science. – How can a 1 – 10 GeV beam test facility be best used for
developing ultra-high gradient technology for high energy physics?
• Coordination of European expertise towards one or several test facilities, including close collaboration with the US and Asian communities.
P.Collier Session 1 Summary
Timeline Milestone
May 2011 EuroNNAc Workshop at CERN: Review activities and discuss strategy
Jun 2011 First small initiative(s) into EuCARD2, if possible
Jun 2011 – 2012 Prepare coherent European strategy, maximizing synergy and maintaining productive competition
2012 – 2013 Agree on possibilities for a substantial FP8 proposal, prepare proposal
P.Collier Session 1 Summary
Accelerator R&D Driving Innovation
P.Collier Session 1 Summary
Large scientific projects stimulate innovation• Space : Apollo missions, Space Station, Pioneer/Voyager Missions• Particle Physics : accelerators in general
At CERN : LEP, LHC
Pushing back the frontiers of technology. CERN Examples:• Superconductivity, magnets, cryogenics, vacuum, survey/metrology.• Transport and installation of heavy equipment.• Solid-state detectors resistant to high-intensity radiation.• Large-scale industrial control systems.• Electronic and information systems.• Project management and co-ordination.
all topics
addressed in
accelerator
systems
P.Collier Session 1 Summary
Basic Research Accelerators are excellent tools for innovation since they tend to push the envelope of what is technically possible in a wide range of domains
Research and Training in Accelerator Science provides a variety of science opportunities and possibilities for interdisciplinary work
Development of innovative acceleration techniques, such as those based on lasers, will enhance connection between diverse scientific and engineering domains and strengthen relations to industry
Besides discovering the secrets of the Universe … a beam of the right particles with the right energy at the right intensity can shrink a tumour, produce cleaner energy, spot suspicious cargo, make a better radial tire, clean up dirty drinking water, map a protein, study a nuclear explosion, design new drug, make a heat resistant automotive cable, diagnose a decease, reduce nuclear waste, detect an art forgery, implant ions in a semi-conductor, prospect oil, date an archeological find, or package a Christmas turkey.*)
*) (Accelerators for America’s Future, DOE)
P.Collier Session 1 Summary
o Accelerators have become an indispensible component of particle physics research and discovery.
o Fundamental research in particle physics stimulates people to search for novel solutions as well as putting together new global collaborations.
o Each new accelerator and each new detector is a prototype, always unique in its type, and which requires the application of new technologies and methodologies.
o Innovative solutions for various problems are developed in collaboration with industry, solutions which result often in products with much added value.
As in the past, the accelerators of particle physics can and should play their role as spearheads in discovery, innovation and global
collaboration, now and in the future.
(CERN) Accelerator R&D for Particle Physics
P.Collier Session 1 Summary
R&D / Test Facilities for enhancing the performance of the existing machineso Major Upgrade projects at CERN – HL-LHC, LIU
High Field Magnets, Superconducting Links, SCRF (Crab Cavities) Collimation, Machine Protection, Radiation Hard Electronics HiRadMat Facility
o Extensions to existing facilities – HIE-Isolde SCRF
Preparation for the next generation of acceleratorso Linear Collider studies at the energy frontier
CLIC and ILCo SPL – high intensity proton driver, Beta-beams …
SCRF
Novel Acceleration techniqueso Use of CERN Facilities – or new test facilities
LARP (US LHC program) MagnetsSQSM TQS
LR
LQS-4m
HQTQC
Compact 400MHz Crab Cavities
LHCpipe1
LHCpipe2
194mm
New idea for a very compact elliptical 800 MHz
Collimation
R&D New Collimator Materials
HIE – ISOLDE projectCavity successfully sputtered and tested at
CERN in dedicated cryostat
Testing Facilities
P.Collier Session 1 Summary
HiRadMat• Facility to study the impact of intense pulsed beams on materials
– material damage even below melting point– material vaporization (extreme conditions)– Radiation damage to materials – change of properties– Thermal shock - beam induced pressure waves
• Uses an LHC-type (25ns) beam extracted from SPS– 440 GeV/c proton beam, 3.4MJ max pulse energy, variable spot size– Ion beams can be used as well:
173.5 GeV/n Pb82+
• Foreseen clients : LHC collimators, machine components (dumps, windows, vacuum pipe coatings), material studies (bulk, superconductors(!)), high-power targets …
Possibilities to
develop test fa
cilities based on th
e extensive
(and Unique) infra
structure at C
ERN
P.Collier Session 1 Summary 13
CERN Interest in Novel Acceleration Research
"CERN is very interested in following and participating in novel
acceleration techniques, and has as a first step agreed to
make protons available for
the study of proton-driven
plasma wakefield acceleration."
Steve MyersCERN Director of
Accelerators & Technology4 October 2010
P.Collier Session 1 Summary 14
o Brief history of collective acceleration:Collectively driven wakefields: emerging tools for HEP
(both by charged bunches and laser pulses)o Broad applications of LWFA (and lasers) HEP(colliders, XFEL, ion sources, ion acceleration, γγ collider) cancer therapy (IORT), ultrafast radiolysis, THz, X-ray sources,…. o Bridge between laser and accelerator communities: ICUIL-ICFA collaboration, Bridgelab, EuCARD,….o Collider physics challengeso Laser technology development for colIiders. e.g. ICANo Energy frontier at PeV with attosecond metrology
History and Outlook for Plasma Acceleration
Two-stage gas cell LWFA experiments
B.B. Pollock et.al., submitted 2011
Plasma emission imaging indicates thatN2 is only present in the injector stage
Electron injection can be controlled
using a two-stage gas cell
800nm Laser
Plasma Emission
IntegratedPlasma
Emission
99.5% He, 0.5% N2 100% He
• The electron density throughout the cell is measured with interferometry to be 3x1018 cm-3
• No self-trapping is observed in pure He for densities below 4x1018 cm-3
50 TW
Ionization-induced injection from the
N2 terminates after the injector stage• Filling only the injector
gives a low energy, broad spectrum feature
• Filling both stages produces high energy, high quality electron beams
Injector Accelerator
1 2 3 4 5 6 7Length (mm)
0 8
Gas Cell
The electron beams are dispersed by a ~0.5 T dipole magnet
P.Collier Session 1 Summary 16
Laser driven collider concept
Etat de l’Art HEEAUP 2005
En
erg
ie p
ar
imp
uls
ion
LIL
1 J
1 k J
100 J
10 J
10 k J
100 k J
1 M J
10 M J
0,1 J
LULI
LMJ/NIF
10 210110-1
10-2
10-3
10-4
10-5
LULI 100TW
1 kW de puissance moyenne
1 W de puissance moyenneCommercial
LULI 2000 pico 2000
Taux de répetition (Hz)
100J/10HzLuli
150J/.1HzJena
100MW High Energy Physics
104
WahooLaser Fusion
15MW
Linear Accelerator100MW
G. Mourou (2005)
Search for High Average Power and Efficient Driver Laser
18
Thin Disk Fiber Amplifier
Best o
ption a
t the m
oment a
ppears to
be th
e
Fibre
Am
plifier
The CAN concept
P.Collier Session 1 Summary 19
Bridgelab Symposium for Laser Acceleration – Paris, Jan 14, 2011 – Matthieu Somekh
Laser concept based on a diode-pumped fiber network of femtosecond pulses Device possibly based on standard, cheap and reliable telecom components
• Laser architecture allowing high peak / high average powers are desired for future societal application
• Coherent combining demonstrated for CW regime, few experiments in ns regime, no results yet in fs regime
• Coherent combining required for some application not for all of them
International Coherent Amplification Initiative (ICAN)
P.Collier Session 1 Summary 20
Different communities joining their efforts towards the collaborative evaluation of the fiber CAN concept as one of the possible solutions for the next laser-based driver generation:– Laser & fibre communities– High energy physics community
Final goal : definition, conception, design and realisation of such a laser
Now in
a sh
ortlist
in E
U (Marc
h,
2011)
Status Reports:
AsiaUS (Beam Driven)US (Laser Driven)
P.Collier Session 1 Summary 21
ASIA
P.Collier Session 1 Summary 22
GIST-APRI, Korea
JAEA-KPSI, Japan
CAS-IOP, China
CAEP-LFRC, China
CAS-SIOM, China
RRCAT, India
280TW 720TW 300TW
890TW
100TW
150TW
NCU, Taiwan
100TW
Potential for laser accelerationin Asia: >8 labs having >100TW lasers
Some Activities
P.Collier Session 1 Summary 23
P.Collier Session 1 Summary 24
• The Asian community on laser plasma acceleration is growing both in theory/simulation and experiments. A few more new laser facilities are planned or under constructions.
• There have been a lot of collaboration in this field between different labs/groups from Asian countries.
• Potential applications of laser-driven particle beams and radiation sources are attracting significant attention among Asian research groups.
• A vibrant and active community!!
USA (Beam Driven)
P.Collier Session 1 Summary 25
P.Collier Session 1 Summary 26
Exciting ti
me for P
lasma D
riven W
akefield Accelera
tion in
the
US
Science
at the Facil
ities d
riven by N
ational L
ab-Universi
ty
Collabora
tions
US (Laser Driven)
P.Collier Session 1 Summary 27
Large number of Labs and Institutes involvedSeveral Facilities with multi-100TW-PW installationsInvolved in Laser Plasma Accelerator research
Some (few) activities
P.Collier Session 1 Summary 28
P.Collier Session 1 Summary 29
Conclusions (session, or Workshop?)
P.Collier Session 1 Summary 30
A Vibrant and Active Field – progress is being made in labs throughout the world
However, there is a huge diversity of studies and developments
Developments in the US and in Asia are impressive
Basic research facilities drives innovation. Innovation is needed for basic research accelerators!o However, it is not clear that we are ready to tackle a real machine at the
energy frontier – forget the PeV’s and and concentrate on the GeV’s!!
All the pieces are in place to start preparing the roadmap for a real facility:o Test the concept in anger for a facility that has to produce scienceo Tailor the facility as both a useful science base AND a proof of principleo ~10GeV Synchrotron Light Source?
Europe can play a role in bringing together the active groups in preparing this roadmap
CERN is ready to play a part.