Persis S. Drell Deputy Director Director, Particle and ... filePersis S. Drell Deputy Director...
Transcript of Persis S. Drell Deputy Director Director, Particle and ... filePersis S. Drell Deputy Director...
1/24/2006 EPAC 1
Strategic Overview: Particle and Particle Astrophysics
Persis S. DrellDeputy DirectorDirector, Particle and Particle Astrophysics
1/24/2006 EPAC 2
SLAC: A Lab in TransitionSLAC’s research vision is evolving dramatically.
The balance and content of the scientific foci is changing in substantial ways
Photon science is rapidly expanding It will be the dominant laboratory program by the end of the decade. In 2009, the major accelerator-based facilities will both be primarily serving photon science
Particle Physics and Particle Astrophysics Will no longer have forefront accelerator based HEP program on site.Non-accelerator efforts will growWill be serving user community at accelerator facilities that will be off site
e.g. ILC; other potential accelerator opportunities
1/24/2006 EPAC 3
Photon Science FutureX-Rays have opened the Ultra-Small World -- Realm of SPEAR3
1012 photons/sec from high brightness undulator400 eV –40 KeV50 ps pulselimited coherence at x-ray wavelengths
X-ray Lasers will open the Ultra-Small and Ultra-Fast Worlds –Realm of LCLS
1012 photons/pulse800 eV – 9 KeV200 fs pulse at commissioningfew * 10 fs within 1-2 yearsfully coherent at x-ray wavelengths
1/24/2006 EPAC 4
Linac Coherent Light Source
LCLS Will Be The World’s First X-ray Laser
1/24/2006 EPAC 5
LCLS: Remarkable Opportunities for Discovery
Femtochemistry and BiologyNanostructuredMaterialsAtomic PhysicsPlasmas and Warm Dense MatterImaging of Nanoclusters and Single BiomoleculesX-ray Laser Physics
1/24/2006 EPAC 6
Changes to Optimize Lab for its Future
New Laboratory Organization and Management Structure
New structure is built around four new directorates -- Particle & Particle Astrophysics, Photon Science, LCLS Construction, and Operations.
Lab is better positioned to serve the two science focus areas New structure stresses the importance of strong and effective line management at the laboratory
1/24/2006 EPAC 7
Previous SLAC Organization
1/24/2006 EPAC 8
1/24/2006 EPAC 9
1/24/2006 EPAC 10
An Exciting and Challenging Time in Field of Particle Physics
The Standard Model of quarks and leptons is fabulously successful---and fabulously incomplete
It only describes ~5% of the UniverseCompelling Questions confront us
Within this decade a new accelerator is coming on line with potential to make dramatic progress in our understanding
LHCWe are also developing the accelerator for discovery in the next decade: ILC
Non accelerator strategies essential components achieving our scientific goalsLong term health and future of the field of HEP relies on ILC
Excellent progress towards international realization of such a machine---but not a certainty
Budgets are very constrained
1/24/2006 EPAC 11
SLAC PPA Program: Exploiting the present and preparing for the future
Science now or soonB Factory (operations to 2008) GLAST (2007 – 2012/17)SLAC Participation in the LHC (2007 and beyond)Proof of principle experiments in accelerator research
R&D for science in the next decade (2010 and beyond)ILC (2016?)LSST (first light 2012??)JDEM (20??) EXO (2012?? if R&D successful)
R&D for farther futureAccelerator Research
FFTB SABER
1/24/2006 EPAC 12
Programmatic PrioritiesFor the near term:
We must focus on B-factory performance and delivery of science to our largest user community
For the mid term:We must continue in our leadership role for the ILC
Highest priority new facility for the world communityWe must complete GLAST construction and develop the ISOC
Deliver the science to the user communityWe must work to provide additional opportunities for science to the HEP user community in ~2012
e.g. LHC, LSST, EXO, JDEM,...For the long term:
The R&D in accelerator science is our hope for the future of the field
To make the next accelerator *after* the ILC technically feasible and affordable
1/24/2006 EPAC 13
Near Term Program: Science Now or Soon
B-factoryGLASTSLAC Participation in the LHC
1/24/2006 EPAC 14
B-Factory ProgramPEP-II Accelerator
Collides e+ and e- with unequal beam energies at ECM=10.58 GeVPremier tool for studying physics of heavy flavor
BaBar DetectorOptimized for B-physics at asymmetric energy colliderRun by International Collaboration of ~623 physicists from 80 institutions in 11 countries
Program of Rich PhysicsB-factory program operates until end of FY2008
Ultimate goal: Deliver to BaBar: ~1ab-1 end of FY2008Laboratory committed to delivering luminosity
212006
155184Total
36602005
35522004
28392003
5432<2003
BelleBABARJournal Papers
1/24/2006 EPAC 15
Machine Performance
1/24/2006 EPAC 16
1/24/2006 EPAC 17
1/24/2006 EPAC 18
GLASTGLAST: γ-ray Large Area Space Telescope
GLAST measures direction, energy and time of celestial gamma rays from 20MeV – 300 GeV
Gamma rays probe cosmological distances in a largely unexplored energy rangeGreat potential for Discoveries:
Fundamental Physics (dark matter,..)Cosmic Particle Acceleration (SNR, jets, ..)Physics of Relativistic Outflows (GRB’s, Pulsars, ..)
Joint Particle Physics/Particle Astrophysics ventureInvolves 5 nations, 9 funding agencies
Fabrication project has been challenging!Project successfully rebaselined summer 03 after CNES withdrew financial supportTransition to flight production much more painful than anticipated and production anomalies summer/fall led to second rebaselinewinter 05
1/24/2006 EPAC 19
LAT Instrument
1/24/2006 EPAC 20
LAT Instrument
Tracker/Converter (TKR):Silicon strip detectors.W conversion foils.80 m2 of silicon (total).106 electronics chans.High precision tracking,
small dead time.
Calorimeter (CAL):1536 CsI crystals.8.5 radiation lengths.Hodoscopic.Shower profile
reconstruction (leakage correction)
Anti-Coincidence (ACD):Segmented (89 tiles).Self-veto @ high energy limited.0.9997 detection efficiency (overall).
1/24/2006 EPAC 21
..\My Documents\My Pictures\16Tower_rotated.gif
1/24/2006 EPAC 22
ACD Installed
1/24/2006 EPAC 23
GLAST Moving ForwardInstrument is assembled and in final testingShip to NRL for environmental testing at end of FebruaryDelivery to Observatory Integration in summer
Mate with spacecraft and GBM and test
Launch 8/07Kennedy Space Flight Center
Focus at SLAC transitioning to build up of ISOC and preparation for science
1/24/2006 EPAC 24
SLAC Participation in LHCMotivations:
Energy frontier Physics. Synergy between LHC and ILC.Experience in detector and operations relevant for ILC.To maintain a healthy work force for ILC Strong user interest from traditional SLAC user communityOur experience on detector/computing are seen as valuable assets which could help ATLAS to prepare for the first physics at LHC. The M&S cost is moderate and should be able to fit more flexibly into the Lab budget.
Good synergy with existing LARP participationStrongly supported by our theory community
1/24/2006 EPAC 25
Proposed Areas of InvolvementSpecific proposal for SLAC participation in ATLAS developed under leadership of Su Dong and Charlie Young Four related items:
Pixel detector Trigger Simulation Tier 2 computing center
Simulation production Calibration. Primary location for physics analysis. A really functional Tier 2 requires much more than keeping a bunch of boxes running.
Proposal for SLAC to join ATLAS is being presented to you at this meetingAlso considered CMS option
1/24/2006 EPAC 26
Possible SLAC Physicist Profile
0
2
4
6
8
10
12
14
16
18
20
2006 2007 2008 2009 2010 2011
Year
FTE
Trigger Simulation Pixel Analysis TBD
1/24/2006 EPAC 27
R&D for science in the next decade: 2010 and beyond
ILCLSSTJDEMEXO
1/24/2006 EPAC 28
ILCHigh Energy e+e- LC highest priority new machine for world community
SLAC has led field in development of LC design and technology
Champion of warm RF technology
How has the ‘cold’ technology choice impacted the lab?SLAC has always been committed to playing a leadership role in ILC independently of choice of RF technologySLAC has accelerator expertise in all subsystems of the colliderR&D program now restructured to address critical issues for cold machine
SLAC fully supports GDE effortSLAC staff are co-leading 4 of the technical subgroups
1/24/2006 EPAC 29
ILC Machine R&D activitiesRestructured R&D program to align with the cold decision
Accelerator Design and CDRe+e- sourcesDamping ring designBeam Delivery SystemInstrumentation and control systems
All being done as part of the coordinated GDE effortSome accelerator R&D may be directed for additional support
e.g. L-band power sourcesGoals for near term:
End of CY05: Select baseline configuration designEnd of CY06: CDR
Goals longer term:CY08/09: TDR
1/24/2006 EPAC 30
ILC Detector ProgramNeed to grow program of linear collider detector R&D
SLAC is working with LBNL and FNAL to provide opportunities for user community to engage
Simulation EffortSupports national and international effort
Concept development for a detector based on SiliconOne of several approaches in the community
Effort is investment limited—particularly engineeringOpportunities to grow with GLAST roll off You will hear a report on the status at this meeting
1/24/2006 EPAC 31
LSST-Large Synoptic Survey Telescope
8.4 m ground based telescopeWide field of viewWeak lensing survey of entire skyDark matter power density spectrumConstraints on Dark Energy
Proposed as joint DOE/NSF project
SLAC lead lab on camera developmentFirst light ~2012
R&D effort growing with GLAST roll offLSST proposal in front of you at this meeting
* Dark matter and dark energy with weak lensing Full LSST survey will cover 20,000 square degrees, and resolve over 4 billion high-redshift (z ≤ 3) galaxies!
* Dark matter and dark energy with
supernovaeLSST will detect 250,000 type I-a supernovae (z ≤ 1) per year!
* Cluster survey and baryon
oscillations.
* Gravitational micro-lensing.
* Strong galaxy & cluster lensing:
physics of dark matter.
* Multi-image lensed SN time delays:
separate test of cosmology.
* QSO time delays vs z: independent
test of dark energy.
1/24/2006 EPAC 32
The LSST Collaboration
Brookhaven National Laboratory
Harvard-Smithsonian Center for Astrophysics
Johns Hopkins University
Las Cumbres Observatory
Lawrence Livermore National Laboratory
National Optical Astronomy Observatory
Ohio State University
Pennsylvania State University
Research Corporation
Stanford Linear Accelerator Center
Stanford University
University of Arizona
University of California, Davis
University of Illinois
University of Pennsylvania
University of Washington
1/24/2006 EPAC 33
2m
3.2 Giga-Pixel10 µm CCD Array3.5° FOV
LSST Camera(shown with the secondary mirror of
the telescope)
1/24/2006 EPAC 34
JDEM/SNAP2m space based telescope—LBNL lead labStudy high z SNe Dark Energy
Weak Gravitational lensingDark MatterStrong Lensing Small scale structure
Joint project DOE and NASASLAC involvement in OCU and possibly electronics
R&D effort growing with GLAST roll offAnticipate full proposal at next meeting
1/24/2006 EPAC 35
EXO: Enriched Xenon ObservatorySearch for ββ0ν decay in 136Xe-->136Ba++ e- e-
EXO PhilosophyExcellent energy resolution (separates ββ0ν from ββ2ν)Positive ID Ba Ion (Ba tagging)
Strategy:Currently EXO 200 is being built
Study detector performance (no Ba+ tagging)Look at backgroundsMeasure 2νββ mode with 1-2 year runSensitivity of ~0.2 eV to 0νββ mode
Continue R&D on Ba tagging for next 2-3 yearsIn parallel with EXO 200 operations
Successful R&D would lead to proposal for full EXO (ton scale experiment)
EXO goal: <mνe>~10’s of meV
1/24/2006 EPAC 36
Strategic Elements of Accelerator Research
Accelerator Research for Future MachinesHigh Gradient Studies for CLIC type machineDevelopment of L-band power sources for ILC
Proof of Principle Studies of New Acceleration Mechanisms:Plasma AccelerationLaser Acceleration
1/24/2006 EPAC 37
Accelerator Research for Future Machines
Accelerator Research for ILC We are developing plans for R&D effort into alternative sources of L-band power for ILC
Plug and play replacement to multi beam klystron at lower costMore innovative technologies: high risk but high gain
High Gradient R&D for e+e- colliders past the ILC
National program being encouraged by DOERedirecting some of resources (people) from warm RF R&D to these efforts
1/24/2006 EPAC 38
Proof of Principle Studies of New Acceleration Mechanisms
Accelerator ResearchE164/E164X running successfully (Plasma wake field acceleration)
Talk by Mark HoganLimited by finite lifetime of FFTB
Laser acceleration experiment progressing in NLCTA
Demonstrate and develop new methods for accelerating electrons with laser radiation using solid-state structuresFirst runs this year
e-ion column
F = -eEz
1/24/2006 EPAC 39
SABERSABER (FFTB replacement) in proposal development
White paper outlining science case and project description
1/24/2006 EPAC 40
SABER Scientific OpportunitiesPlasma Wakefield Acceleration and Beam-Plasma Physics
Continuation of successful plasma acceleration programExtend to positrons
Magnetism and Solid State PhysicsUse intense E and B fields associated with the electron bunchesStudies of ultra-fast magnetization dynamics
Intense THz Light Source for Surface ChemistrySABER can produce ultra-short pulse of coherent THz radiationStudies of dissociation of aligned molecules at a surface & other surface chemistry experiments
Laboratory Astrophysics ExperimentsCalibration of cosmic ray observational techniquesStudies of dynamics of jet-plasma interactions
Inverse Compton Scattered BeamPhoton energies to 18 GeV
1/24/2006 EPAC 41
SABER Parameters
2 m from last quadrupole to focal point. Approximately 23 m from focal point to Arc 3 magnets. This space will be available for experimental use and for the dump line system, depending on user requirements. Further expansion is possible by removing unused arc magnets downstream.
Drift space available for experimental apparatus
0Momentum dispersion at IP (η and η’)
4 % full width with full compression.Momentum spread
10 μm nominal(5.2 x 5.4 μm achieved in computer simulations).
Spot size at IP (σx,y)
30 μmPulse length at IP (σz)
2 x 1010 (3 nC) electrons or positrons per pulse.Charge per pulse
Adjustable up to 30 GeV nominal. 28.5 GeV when the Bypass Line is used concurrently with PEP-II operation.
Energy
1/24/2006 EPAC 42
Looking Forward
1/24/2006 EPAC 43
Vision for HEP at SLAC Highest priority is given to B-factory operations through FY2008
Delivery of science to our largest user communityOther program elements
ILC/LCDWe hope resources saved to HEP by transfer of responsibility of accelerator operations to BES and eventual termination of B-factory program will be used to help build up national ILC R&D programNew and other reprogrammed resources will also be essentialWe will compete through GDE process for some of those resourcesWe anticipate an aggressive growth model for ILC program at SLAC
This must be matched by aggressive growth in the national program
1/24/2006 EPAC 44
Vision for HEP at SLAC
Other program elements (cont.)Non-accelerator based programs will growSLAC Participation in LHCWe will continue at roughly constant level:
Accelerator R&DTheory
1/24/2006 EPAC 45
PPA Goals for 2009Vibrant particle physics and particle astrophysics programs
ILCLHCGLAST and BaBar dataNon-Accelerator Experiments (LSST, EXO, SNAP…)
Strong support for operating accelerator program (LCLS) transferred to photon science managementThriving cross disciplinary programs
Accelerator Research Scientific Computing
Strategic decisions now are focused on achieving these goals
1/24/2006 EPAC 46
Summary
Enormous opportunities for world class science at SLACSLAC’s programs and leadership central to national and international effortPrograms are science driven, innovative, flexible and responsive to scientific drivers