Upload
elisha
View
57
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Strategic Overview: Particle and Particle Astrophysics. Persis S. Drell Deputy Director Director, Particle and Particle Astrophysics. SLAC: A Lab in Transition. SLAC’s research vision is evolving dramatically. The balance and content of the scientific foci is changing in substantial ways - PowerPoint PPT Presentation
Citation preview
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 Transition SLAC’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 grow Will 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 Future X-Rays have opened the Ultra-Small World -- Realm of
SPEAR3 1012 photons/sec from high brightness undulator 400 eV –40 KeV 50 ps pulse limited coherence at x-ray wavelengths
X-ray Lasers will open the Ultra-Small and Ultra-Fast Worlds –Realm of LCLS 1012 photons/pulse 800 eV – 9 KeV 200 fs pulse at commissioning few * 10 fs within 1-2 years fully 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
Biology Nanostructured
Materials Atomic Physics Plasmas and Warm
Dense Matter Imaging of
Nanoclusters and Single Biomolecules
X-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 Universe Compelling Questions confront us
Within this decade a new accelerator is coming on line with potential to make dramatic progress in our understanding LHC We are also developing the accelerator for discovery in the
next decade: ILC Non accelerator strategies essential components
achieving our scientific goals Long 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 soon B 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 future Accelerator Research
FFTB SABER
1/24/2006 EPAC 12
Programmatic Priorities For 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 community We must complete GLAST construction and develop the
ISOC Deliver the science to the user community
We 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 Program PEP-II Accelerator
Collides e+ and e- with unequal beam energies at ECM=10.58 GeV
Premier tool for studying physics of heavy flavor
BaBar Detector Optimized for B-physics at
asymmetric energy collider Run by International Collaboration of
~623 physicists from 80 institutions in 11 countries
Program of Rich Physics B-factory program operates until
end of FY2008 Ultimate goal: Deliver to BaBar:
~1ab-1 end of FY2008 Laboratory committed to
delivering luminosity
Journal Papers
BABAR Belle
<2003 32 54
2003 39 28
2004 52 35
2005 60 36
2006 1 2
Total 184 155
1/24/2006 EPAC 15
Machine Performance
1/24/2006 EPAC 16
1/24/2006 EPAC 17
1/24/2006 EPAC 18
GLAST GLAST: -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 range Great potential for Discoveries:
Fundamental Physics (dark matter,..) Cosmic Particle Acceleration (SNR, jets, ..) Physics of Relativistic Outflows (GRB’s, Pulsars, ..)
Joint Particle Physics/Particle Astrophysics venture Involves 5 nations, 9 funding agencies
Fabrication project has been challenging! Project successfully rebaselined summer 03 after CNES withdrew
financial support Transition to flight production much more painful than anticipated
and production anomalies summer/fall led to second rebaseline winter 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 Forward Instrument is assembled and in final
testing Ship to NRL for environmental testing
at end of February Delivery to Observatory Integration in
summer Mate with spacecraft and GBM and
test Launch 8/07
Kennedy Space Flight Center Focus at SLAC transitioning to build up
of ISOC and preparation for science
1/24/2006 EPAC 24
SLAC Participation in LHC Motivations:
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
community Our 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 participation Strongly supported by our theory community
1/24/2006 EPAC 25
Proposed Areas of Involvement Specific 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 meeting Also 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
FT
E
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
ILC High 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 technology SLAC has accelerator expertise in all subsystems of the
collider R&D program now restructured to address critical issues for
cold machine SLAC fully supports GDE effort
SLAC staff are co-leading 4 of the technical subgroups
1/24/2006 EPAC 29
ILC Machine R&D activities Restructured R&D program to align with the cold
decision Accelerator Design and CDR
e+e- sources Damping ring design Beam Delivery System Instrumentation and control systems
All being done as part of the coordinated GDE effort Some accelerator R&D may be directed for additional
support e.g. L-band power sources
Goals for near term: End of CY05: Select baseline configuration design End of CY06: CDR
Goals longer term: CY08/09: TDR
1/24/2006 EPAC 30
ILC Detector Program Need 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 Effort Supports national and international effort
Concept development for a detector based on Silicon One of several approaches in the community
Effort is investment limited—particularly engineering Opportunities 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 telescope
Wide field of view Weak lensing survey of entire
sky Dark matter power density
spectrum Constraints on Dark Energy
Proposed as joint DOE/NSF project SLAC lead lab on camera
development First light ~2012
R&D effort growing with GLAST roll off
LSST 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 m CCD Array3.5° FOV
LSST Camera (shown with the secondary mirror of
the telescope)
1/24/2006 EPAC 34
JDEM/SNAP 2m space based telescope—
LBNL lead lab Study high z SNe Dark
Energy Weak Gravitational lensing
Dark Matter Strong Lensing Small scale
structure Joint project DOE and NASA
SLAC involvement in OCU and possibly electronics
R&D effort growing with GLAST roll off
Anticipate full proposal at next meeting
1/24/2006 EPAC 35
EXO: Enriched Xenon Observatory Search for decay in 136Xe-->136Ba++ e- e-
EXO Philosophy Excellent energy resolution (separates 0 from 2) Positive ID Ba Ion (Ba tagging)
Strategy: Currently EXO 200 is being built
Study detector performance (no Ba+ tagging) Look at backgrounds Measure 2 mode with 1-2 year run Sensitivity of ~0.2 eV to 0 mode
Continue R&D on Ba tagging for next 2-3 years In parallel with EXO 200 operations
Successful R&D would lead to proposal for full EXO (ton scale experiment) EXO goal: <me>~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 Acceleration Laser 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 cost More innovative technologies: high risk but high
gain High Gradient R&D for e+e- colliders past
the ILC National program being encouraged by DOE Redirecting 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 Research
E164/E164X running successfully (Plasma wake field acceleration) Talk by Mark Hogan Limited 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 structures
First runs this year
e-ion
column
F = -eEz
1/24/2006 EPAC 39
SABER SABER (FFTB replacement) in proposal
development White paper outlining science case and project
description
1/24/2006 EPAC 40
SABER Scientific Opportunities Plasma Wakefield Acceleration and Beam-Plasma Physics
Continuation of successful plasma acceleration program Extend to positrons
Magnetism and Solid State Physics Use intense E and B fields associated with the electron
bunches Studies of ultra-fast magnetization dynamics
Intense THz Light Source for Surface Chemistry SABER can produce ultra-short pulse of coherent THz radiation Studies of dissociation of aligned molecules at a surface &
other surface chemistry experiments Laboratory Astrophysics Experiments
Calibration of cosmic ray observational techniques Studies of dynamics of jet-plasma interactions
Inverse Compton Scattered Beam Photon energies to 18 GeV
1/24/2006 EPAC 41
SABER ParametersEnergy Adjustable up to 30 GeV nominal. 28.5 GeV when the
Bypass Line is used concurrently with PEP-II operation.
Charge per pulse 2 x 1010 (3 nC) electrons or positrons per pulse.
Pulse length at IP (σz) 30 μm
Spot size at IP (σx,y) 10 μm nominal(5.2 x 5.4 μm achieved in computer simulations).
Momentum spread 4 % full width with full compression.
Momentum dispersion at IP (η and η’)
0
Drift space available for experimental apparatus
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.
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 community
Other program elements ILC/LCD
We 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 program
New and other reprogrammed resources will also be essential
We will compete through GDE process for some of those resources
We 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 grow SLAC Participation in LHC We will continue at roughly constant level:
Accelerator R&D Theory
1/24/2006 EPAC 45
PPA Goals for 2009 Vibrant particle physics and particle astrophysics
programs ILC LHC GLAST and BaBar data Non-Accelerator Experiments (LSST, EXO, SNAP…)
Strong support for operating accelerator program (LCLS) transferred to photon science management
Thriving 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 SLAC
SLAC’s programs and leadership central to national and international effort
Programs are science driven, innovative, flexible and responsive to scientific drivers