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DOE Annual Program Review
Center for Particle Astrophysics
Scott Dodelson
September 25, 2007 2
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Center for Particle Astrophysics
We study Fundamental Physics
Dark Energy
Dark Matter
Neutrino Mass
Seeds of Primordial Structure
These are arguably the most compelling discoveries to date of Physics Beyond the
Standard Model
September 25, 2007 3
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Center for Particle Astrophysics
Center Projects
Chicagoland Observatory for Underground Particle Physics (COUPP)
Cryogenic Dark Matter Search (CDMS) Dark Energy Survey (DES)
GammeV
Pierre Auger Observatory
Sloan Digital Sky Survey (SDSS)
SuperNova Acceleration Probe (SNAP)
Theoretical Astrophysics
September 25, 2007 4
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Center for Particle Astrophysics
COUPP
• Competitive sensitivity for spin-dependent scattering, despite high backgrounds.
Spin-dependent Spin-independent
September 25, 2007 5
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Center for Particle Astrophysics
Pierre Auger
Calibration unc. 18%FD syst. unc. 22%
5165 km2 sr yr ~ 0.8 full Auger year
Exp Obs>1019.6 132 +/- 9 51
> 1020 30 +/- 2.5 2
Suppression evident at high energy
September 25, 2007 6
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Center for Particle Astrophysics
CDMS
September 25, 2007 7
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Center for Particle Astrophysics
SDSS
Tegmark et al. 2006
September 25, 2007 8
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Center for Particle Astrophysics
S. Allam, H. Lin, T. Diehl, D. Tucker et al.
Discovered via systematic searches of the SDSS data, with ongoing and proposed multi-wavelength follow-up from ground and space-based telescopes
The 8 O’Clock Arc, the brightest known lensed Lyman Break Galaxy (LBG), with a redshift z=2.73 (Allam et al. 2007)
3 newly confirmed lensed arc systems from SDSS, with z=2.0-2.4
Gravity helps reveal a brilliant jewel of the early universeSLOAN DIGITAL SKY SURVEY NEWS RELEASE
Posted: November 8, 2006
SDSS
September 25, 2007 9
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Center for Particle Astrophysics
GammeV
Shining Light through a Wall to search for axions and/or chameleons
First Results in Poster Session Tonight!
September 25, 2007 10
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Center for Particle Astrophysics
Dark Energy Survey
Study Dark Energy using 4 complementary techniques:
I. Cluster Counts II. Weak Lensing III. Baryon Acoustic Oscillations IV. Supernovae Two multiband surveys: 5000 deg2 g, r, i, z 9 deg2 repeat (SNe) Build new 3 deg2 camera and
Data Management system 5 year Survey (525 nights)
Blanco 4-meter at CTIO
September 25, 2007 11
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Center for Particle Astrophysics
DECam
CCD development is on track 40 2kx4k devices + 10 2kx2k CCDs delivered to
Fermilab this summer (May - June 2007) Estimates of the yield based on these devices are
consistent with the cost and schedule estimates
Readout of 4 CCD mosaic meets noise and readout speed requirements (July 2007)
Prototype high-density readout boards (Spain and FNAL) meet requirements
Acquisition of large lenses (STFC and university) Procurement of glass blanks awarded Tenders for polishing the blanks due in
September
We anticipate a baseline DOE cost for DECam in the range of $24.1M – $26.7 M and a scheduled completion date from April 2011-April 2012
DECam Focal Plane
62 2kx4k Image CCDs: 520 MPix8 2kx2k focus, alignment CCDs4 2kx2k guide CCDs
Optical Lenses
CCD Readout Filters Shutter
September 25, 2007 12
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Center for Particle Astrophysics
SNAP
Science: Weak lensing & SN1A Calibration
Photometric & Astrometric “Slice” Electronics
Manage data prior to transmission CCD and Front-end Electronics
packaging and TestingSiDet is a Production Facility
Software/Simulations/Data ManagementExperience with Large HEP & SDSS
Datasets
Have started internal discussions on FNAL role in SNAP
“On-Track” Plan
September 25, 2007 13
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Center for Particle Astrophysics
Software/Simulations/Data Management FNAL processes, manages, analyzes, and serves
O(Pbyte)-size data samples & has experience with astronomical data from SDSS
We’d like to design and build the data handling, processing, cataloging, archiving, and serving systems
Focal Plane Assembly Less modest hardware effort Build & test this
SNAP
Leadership Plan
September 25, 2007 14
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Center for Particle Astrophysics
Budget
Includes indirect and scientists but not (DES) project costsExperimental RA salaries in CPA starting in June 07.
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Center for Particle Astrophysics
Organization
Scott Dodelson, Acting Director(Ellie Arroyo), Budget Officer
Scott Dodelson, Acting Director(Ellie Arroyo), Budget Officer
Research AssociatesAaron Chou, Auger
Jeter Hall, CDMSJeff Kubo, SDSS
Gajus Miknaitis, SDSSJason Steffen, Brinson Fellow
Jong-Hee Yoo, CDMS
Research AssociatesAaron Chou, Auger
Jeter Hall, CDMSJeff Kubo, SDSS
Gajus Miknaitis, SDSSJason Steffen, Brinson Fellow
Jong-Hee Yoo, CDMS
Long Term Guests & VisitorsSahar Allam, SDSS
Pasquale Blasi, Auger/TheoryDarren Depoy, DES
Suzanne Deustua, SNAP
Long Term Guests & VisitorsSahar Allam, SDSS
Pasquale Blasi, Auger/TheoryDarren Depoy, DES
Suzanne Deustua, SNAP
September 25, 2007 16
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Center for Particle Astrophysics
Weekly Seminars Semi-Annual Workshops (Dark Matter, Strong
Lensing) Move to Wilson Hall 6&7 unifies different
groups Weekly Journal Discussion Weekly Chalk Talk Weekly SDSS Science Meeting Quarterly All-Hands Meetings
Intellectual Environment
New in 2007}
September 25, 2007 17
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Center for Particle Astrophysics
FuturesMonthly meetings to chart future
Bauer, Diehl, Dodelson, Frieman, Flaugher, Kent, Mantsch, Peoples, Sonnenschein
FellowsSeparated out FCPA Experimental RA’s
Annis, Bauer, Diehl, Flaugher, Mantsch, Merritt, Newman-Holmes, Sonnenschein
SpaceDoubling Time: ~7 years
Bauer, Diehl, Glass, Merritt,Sonnenschein, Stebbins, Stoughton
VisitorsLong- and Short- Term
Annis, Glass, Sonnenschein, Stebbins
Ad-Hoc Reviews/Task ForcesComputing, GammeV, 8 O’clock Arc Follow-up, SNAP Plan, AGIS
participation
Amundson, Annis, Bauer, Carcagno, Diehl, Dodelson, Frieman, Flaugher, Gnedin, Holmgren, Hooper, Lin, Liu, Kowalkowski, Kronfeld, Marriner, McGinnis, Newman-Holmes, Nguyen, Peoples, Petravick, Wilson
Web Page Kubo, Glass, Jackson, Steffen
Preparing for the Future
September 25, 2007 18
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Center for Particle Astrophysics
Visitors
Learn the field (Bohn, Perera, Riberio, Schramm, Shapiro, Soares-Santos, ~15 summer students)
Support projects (Ahn, Blasi (Auger), Brink (CDMS), Butner (SDSS), Dall’aglio, Depoy (DES), Deustua (SNAP), Hamilton, Jaffe, Lahav (DES), Makler (DES), McElrath, Powell, Smith (SDSS), Taylor, Wayth, Weller (DES), Zhang, Zlosnik, Zurek)
Future projects (Byrum, Habib, Heitman, Meyer, Peterson, Shutt, Timbie, Vassiliev, Winstein)
Build a Users Community
September 25, 2007 19
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Center for Particle Astrophysics
Research Associates
Can help drive science (e.g., CDMS) Separate Ad/Committee (Offer to Ahn accepted to work
on Auger) Moved RAs to Center Responsibility (organize seminars, chalk talks,
web site, workshops) Monthly Meetings Be proactive in helping them get jobs
September 25, 2007 20
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Center for Particle Astrophysics
Cosmological Computing
Essential for extracting information about dark energy from upcoming experiments (DES, SNAP) Local Expertise/Interest Seed national collaboration, uniting disparate efforts (in supercomputing 2+2<4)
September 25, 2007 21
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Center for Particle Astrophysics
1. Hire Gnedin (7/05)
2. Bring idea to Futures Committee (12/06)
3. Present idea to Directorate (1/07)
4. Apply for FRA grant; open discussion with KICP (2/07)
5. Include Computing Division, LQCD, Kravtsov on Task Force (4/07)
6. Place Requisitions w/ money from FRA, KICP, Theory (7/07)
7. Submit Task Force Report (8/07)
8. Begin Discussions with representatives from other Labs (8/07)
Need Scientific Talent
Look for funding
Leverage FNAL’s resources
Full support; refinement
Cosmological Computing
September 25, 2007 22
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Center for Particle Astrophysics
Wed., Nov. 7:------------
9:00-9:45 Goals of the Retreat 9:45-10:15 Coffee break10:15-11:15 UHECR: Beyond Auger
South11:15-11:45 Gravity waves: beyond
LIGO11:45-12:15 Discussion12:15-1:30 Lunch1:30-2:30 Computational Astrophysics2:30-3:30 21 cm observations3:30-4:00 Break4:00-5:00 CMB5:00-6:00 Direct dark matter detection
Retreat
Thurs., Nov. 8--------------
9:00-10:00 Optical cosmology10:00-10:30 Near-infrared observations10:30-11:00 Break11:00-12:00 Indirect Dark matter detection 12:00-12:30 Discussion12:30-2:00 Lunch2:00-2:30 Underground laboratory/experiments 2:30-3:00 Discussion3:00-4:00 Recap/lessons/next steps
George Williams College, Geneva, WI
September 25, 2007 23
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Center for Particle Astrophysics
Fermilab has a suite of exciting astrophysics projects which are producing results and/or on schedule to add to our knowledge of Physics Beyond the Standard Model
The Fermilab Center for Particle Astrophysics has created a thriving intellectual environment dedicated to the success of its projects
Over the past year, we’ve instituted the structures which will:
● establish FNAL as a User facility for astrophysicists
● ensure that Fermilab will be heavily involved in the science of its projects ● enable the Center to play a leading role in charting the future of the field
Conclusions
September 25, 2007 24
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Center for Particle Astrophysics
Backup Slides
September 25, 2007 25
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Center for Particle Astrophysics
FY07 FY08 Phase C/D
M&S FTE
M&S FTE
M&S/year FTE/year
Electronics $40k 3.5 $200k 3.5 $1000k 10
Calibration 0 0.25
1.5 0 2
Software, Simulations, Data Management 0 0.5 $150k 3 $500k 6
CCD’s $92k 0 $125k 2 $400k 6
Front-End Electronics 0 0 $25k 1 $300k 3
Science 0 0 0 0 0 2
Total One Year Costs $132k 5 $500k 11 $2.2M 29
Total (x5 for full C/D costs) $11M 145
September 25, 2007 26
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Center for Particle Astrophysics
Cosmological ComputingCosmological Computing
As of today, CD maintains an 8 core cluster for cosmology Other groups have many more resources:o Virgo Consortium: 670 CPU SparcIII, 816 CPU Power4o ITC, Harvard: 316 CPU Opteron, 264 CPU Athlono LANL: 294 CPU Pentium4 (just for cosmology)o CITA: 270 CPU Xeon clustero SLAC: 72 CPU SGI Altrix, 128 CPU Xeon clustero Princeton: 188 CPU Xeon clustero UWash: 64 CPU Pentium cluster Using FRA grant and contribution from KICP (UC), CD will host/maintain 560 core cluster for cosmology by December CD participating in Task Force to unify cosmological computing on a national scale Crucial to extract fundamental physics from astrophysical observations (SDSS, DES, SNAP)→ Complements/enhances experimental program
September 25, 2007 27
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Center for Particle Astrophysics
Can we do better?
Preparing for the Future
September 25, 2007 28
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Center for Particle Astrophysics
The Dark Energy Survey
• Study Dark Energy using 4 complementary* techniques: I. Cluster Counts II. Weak Lensing III. Baryon Acoustic Oscillations IV. Supernovae
• Two multiband surveys: 5000 deg2 g, r, i, z 9 deg2 repeat (SNe)
• Build new 3 deg2 camera and Data management system 5 year Survey (525 nights) Response to NOAO AO
Blanco 4-meter at CTIO
*in (systematics, cosmological parameter degeneracies,Geometry vs. Structure growth)
fDES Forecasts: Power of Multiple Techniques
Ma, Weller, Huterer, etal
Figure of Merit: inverse area of ellipse
• Overlap with the South Pole Telescope (SPT) SZ survey to measure cluster masses and redshifts
• Deep, Multi-band survey: SDSS g,r,i,z (or Z,Y) filters to measure photo-z’s, red sensitive CCDs
• Projecting a factor of 4.6 improvement in the Figure of Merit over Stage II projects
September 25, 2007 30
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Center for Particle Astrophysics
DES Collaboration• Fermilab: J. Annis, E. Buckley-Geer, H. T. Diehl, S. Dodelson, J. Estrada, B. Flaugher, J.
Frieman, S. Kent, H. Lin, P. Limon, K. W. Merritt, J. Peoples, V. Scarpine, A. Stebbins, C. Stoughton, D. Tucker, W. Wester
• University of Illinois at Urbana-Champaign W. Barkhouse, C. Beldica, R. Brunner, I. Karliner, J. Mohr, C Ngeow, R. Plante, T. Qian, P. Ricker, M. Selen, J. Thaler
• University of Chicago: J. Carlstrom, S. Dodelson, J. Frieman, M. Gladders, W. Hu, E. Sheldon, R. Wechsler Graduate students: C. Cunha, M. Lima, H. Oyaizu
• Lawrence Berkeley National Laboratory: N. Roe, C. Bebek, M. Levi, S. Perlmutter • University of Michigan: R. Bernstein, B. Bigelow, M. Campbell, D. Gerdes, A. Evrard, W.
Lorenzon, T. McKay, M. Schubnell, G. Tarle, M. Tecchio• NOAO/CTIO: Tim Abbott, Chris Miller, Chris Smith, Nick Suntzeff, Alistair Walker• Spanish Consortium: Institut d'Estudis Espacials de Catalunya (IEEC/CSIC): Francisco Castander,
Pablo Fosalba, Enrique Gaztañaga, Jordi Miralda-Escude; Institut de Fisica d'Altes Energies (IFAE):Enrique Fernández, Manel Martínez, Ramon Miquel; CIEMAT, Madrid: C. Maña, M. Molla, E. Sanchez, J. Garcia-Bellido (UAM)
• United Kingdom Consortium: University College London: O. Lahav, D. Brooks, P. Doel, M. Barlow, S. Bridle, S. Viti, J. Weller: University of Cambridge: G. Efstathiou, R. McMahon, W. Sutherland; University of Edinburgh: J. Peacock; University of Portsmouth Institute of Cosmology and Gravitation: R. Crittenden, R. Nichol, W. Percival; University of Sussex: A. Liddle, K. Romer
• University of Pennsylvania: M, Bernardi, G. Bernstein, M. Devlin, B. Jain, M. Jarvis, R. Jimenez, L. Gladney, M. Sako, R. Seth, L. Verde
• Brazil-DES Consortium:Observatorio Nacional (ON): Staff: L. da Costa, P. S. Pellegrin, M. Maia, C. Benoist; Post-Docs: J. M. Miralles, L. F. Olsen, R. Ogando: Centro Brasileiro de Pesquisas Fisicas (CBPF): M. Makler Universidade Federal do Rio de Janeiro (UFRJ): I. Waga, M. Calvao; Universidade Federal do Rio Grande do Sul (UFRGS): B. Santiago
• The Ohio State University: D. DePoy, K. Honscheid, C. Kochanek, P. Martini, D. Terndrup, D. Weinberg, T. Walker
• Argonne National Laboratory: S. Kuhlmann, H. Spinka, Rich Talaga
Red = joined in the past 6 months
September 25, 2007 31
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Center for Particle Astrophysics
DES Organization• DES consists of three
projects and the Science Committee– DECam: Fermilab– Data Management: NCSA– CTIO Facilities Upgrades:
CTIO/NOAO• The DES council
provides over-site• DES Project Director
coordinates the three projects and the science committee
September 25, 2007 32
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Center for Particle Astrophysics
DECam replaces the Prime Focus Cage of the Blanco
3556 mm
1575 mm
Hexapod
Optical Lenses
F8 Mirror
CCDRead out
Filters Shutter
September 25, 2007 33
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Center for Particle Astrophysics
DES Project Approval Status
• July 2006: – Positive recommendation to proceed with DES from P5 to HEPAP– Fermilab Directors review, practice for CD-1 review by DOE
• Oct. 2006: NSF and DOE request “end-to-end” description of DES in the form of a proposal. This was competed at the end of Dec.06.
• Feb. 2007: DECam is in the FY08 presidents budget request for a construction start in FY08 (a necessary, but not sufficient step as we still need to go successfully through the DOE review process)
• May 1-3 2007: joint NSF-DOE review of DES– This will serve as the CD-1 review of the DECam project– Will also review Data management and plans for upgrades to the Blanco
• Aim for CD2/3 ~ Nov. 2007 with construction start ~ March 2008
September 25, 2007 34
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Center for Particle Astrophysics
DOE and NSF Actions on DES in 2007
Actions prior to July 31, 07: • The DOE FY08 Congressional Budget Request contains
$3.6 M for DES MIE, but expenditures are contingent on successful scientific and technical readiness reviews by DOE and NSF.
• Joint DOE-NSF review of DES held at Fermilab 1-3 May 07– The Review Committee recommended that DOE
pursue CD-1 approval for the DECam project– DECam, Data Management, NOAO, and Science Teams
are actively addressing the 58 recommendations• DOE and NSF formed a Joint Oversight Group for DES- it
has met ~10 times since late May• DOE awarded DECam $900 K of funds for Dark Energy
R&D
September 25, 2007 35
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Center for Particle Astrophysics
DOE and NSF Actions on DES in 2007 cont’d
Actions since August 1, 07 • DOE and NSF agreed to proceed to the next stage of
DES; continuation of DOE R&D support for DECam, initial NSF support of Data Management at NCSA and NOAO support of CTIO upgrades
• NSF-AST recommended funding for DES Data Management: sufficient for full effort for ~ 15 months
• Acquisition Strategy submitted to Office of Science for approval and we hope to have CD-1 approval by the end of September
• 2nd Joint NSF-DOE review of DES has been scheduled for 29-31 Jan 08. It will serve as the DOE CD-2 review of DES, the NSF review of the 2nd DES proposal to NSF for data management and the review of DES planning for commissioning and operations.
September 25, 2007 36
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Center for Particle Astrophysics
Institutions Participating in the DES Collaboration
• Fermilab• University of Illinois at Urbana-Champaign• University of Chicago• Lawrence Berkeley National Laboratory• University of Michigan• NOAO/CTIO• Spain-DES Collaboration:
Institut d'Estudis Espacials de Catalunya (IEEC/ICE), Institut de Fisica d'Altes Energies (IFAE), CIEMAT-Madrid:
• United Kingdom-DES Collaboration: University College London, University of Cambridge, University of Edinburgh, University of Portsmouth, University of Sussex
• The University of Pennsylvania• Brazil-DES Consortium• The Ohio State University• Argonne National Laboratory
17 institutions and 110 participants
September 25, 2007 37
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Center for Particle Astrophysics
The DES Organizationa collaboration perspective
September 25, 2007 38
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Center for Particle Astrophysics
DECam Summary
• To meet the science requirements, within the allocated time period (525 nights) DECam must have:
• 3 sq. deg. field of view with excellent image quality
• red sensitive CCDs • g,r,i,Z,Y filters
• The CCD Procurement is on track– 40 2kx4k devices + 10 2kx2k CCDs delivered to
Fermilab this summer (May - June 2007)– Estimates of the yield based on these devices are
consistent with the cost and schedule estimates
• Readout of 4 CCD mosaic meets noise and readout speed requirements (July 2007)
• Prototype high-density readout boards (Spain and FNAL) meet requirements
• Acquisition of large optical elements (STFC and university)
– Procurement of glass blanks awarded– Tenders for polishing the blanks due in
September
• We anticipate a baseline DOE cost for DECam in the range of $24.1M – $26.7 M and a scheduled completion date from April 2011-April 2012
DECam Focal Plane
62 2kx4k Image CCDs: 520 MPix8 2kx2k focus, alignment CCDs4 2kx2k guide CCDs
Optical Lenses
CCD Readout Filters Shutter
September 25, 2007 39
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Center for Particle Astrophysics
September 25, 2007 40
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Center for Particle Astrophysics
September 25, 2007 41
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Center for Particle Astrophysics
September 25, 2007 42
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Center for Particle Astrophysics
fCOUPP 60 Kg Chamber
•Construction of a new 60 kg chamber was approved by the PAC and director last fall.•Now under construction-- will run in 2008.
Steel Outer Vessel Quartz Inner Vessel
September 25, 2007 44
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Center for Particle Astrophysics
Discrimination strategies• Most particle physics experience in MeV range
• Direct detection requires keV scale Phonons
10 meV/ph
Ionization~ 10 eV/e
Scintillation~ 1 keV/γ
CRESST CDMSEDELWEISS
ZEPLINXENON
WArP, ArDM
Sub-K low threshold
large mass >$$
Scintillation high threshold
Noble liquids high threshold but
large mass <$$
Initially need both
DAMAZEPLIN I
DEAPCLEAN
September 25, 2007 45
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Center for Particle Astrophysics
Compare CDMS with noble liquids In the end,
the tails of the background distributions determine the sensitivity
gammas
n-recoils
XENON PrototypeBest CDMS Ge ZIP
countingstatistics
Best resolution from SCDMS experiment allows better discovery potential
99% discrimination to below ~10 keV
overlap starts at ~50 keV
for more detail see
http://www.physics.ucla.edu/hep/dm06/talks/shutt.pdf
September 25, 2007 46
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Center for Particle Astrophysics
Fundamental technology differences
• Left out of DM SAG presentation is technology risk associated with noble liquid experiments due to x10 intrinsically worse resolution. – See examples of problems in preprints from WARP and ZEPLIN
II (hard to review private communication to DM SAG from XENON 10).
– Very intricate phenomenology that will take time to understand and calibrate (energy, contamination etc.).
• Not wise to lose best technology even if more expensive - we do not want to be in the DAMA situation again.– Since a large fraction of the costs are people, there is only a
modest savings between SCDMS and any of the proposed experiments once they mature.
• Essential to understand backgrounds and to have very good discrimination. – Example is the degradation of sensitivity in the present
ZEPLIN II results from the fact that they have a background that they cannot reject.
– A caution against assuming that the new technologies can mature too quickly in this very challenging research.
September 25, 2007 48
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Center for Particle Astrophysics
FNAL has made a splash in CDMS w/ relatively small investment. RA’s have made a big difference.
September 25, 2007 49
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Center for Particle Astrophysics
CDMS II Continuing to Run at Soudan
Current sensitivity of CDMS
Xenon10 limitPublished CDMS lim
it
DAMA MSSM
CDMS is the only direct detection dark matter experiment currently running without backgrounds!
814 kg-day exposure
Large calibration data sets
High efficiency for collecting data
September 25, 2007 50
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Center for Particle Astrophysics
CDMS Collaboration at SoudanDOE LaboratoryFermilabLBNL
DOE UniversityBrownCalTechFloridaMinnesotaMITStanfordUC Santa Barbara
NSFCase Western ReserveColorado (Denver)Santa ClaraUC Berkeley
CanadaQueens
September 25, 2007 51
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Center for Particle Astrophysics
Fermilab responsibilities in CDMS II
Established roles in CDMSProject Management
Project Manager, Financial support peopleOperations
Lead the Soudan operations on both physicist and technical sidesCryogenics
Lead the design, construction and testing of the cryogenics systems
Electronics, DAQ, Computing
Warm electronics, event builder software, online and offline processing
Infrastructure
Clean rooms, control rooms, computing roomsAnalysis
Independent analysis chain (based on ROOT, time-domain pulse fitting)
September 25, 2007 52
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Center for Particle Astrophysics
New Fermilab responsibilities in SuperCDMS
New roles for SuperCDMSBackgrounds
Collaborating with COUPP on understanding Radon, alpha screeningMay get involved in beta screening with new clean TPC
Shield/Veto
Do mechanical design and construction together with cryogenicsDetectors
Exploring possibilities for automated inspection and repair at SiDetMay also get involved in bonding our sensors to larger crystals
Systems Test
Put everything together at Fermilab and test before taking to SNOLAB
Need more scientist and engineering help to push forward these new areas
September 25, 2007 53
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Center for Particle Astrophysics
CDMS budget summaryCDMS II Project budget = $18.5M (6 years)Total budget including base funding = $29.5MMost of the operations funding comes from Fermilab
FY2007 ~$0.5M M&S, $1.3M Labor
SuperCDMSProject budget = $16.2M (6 years)Total budget including base funding = $47.3MFNAL operations budget request increased
FY2008 ~$1.1M M&S, $2M Labor
September 25, 2007 54
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Center for Particle Astrophysics
Progress on SuperCDMS Design
• Pulse tube cryocooler under test in clean room in Lab 3 at Fermilab– Important to
understand vibrations since these are an integral part of the cryogen-free dilution refrigerators we plan to use for SuperCDMS
• New warm electronics prototype for SuperCDMS– Replaces a chain of four
9U-sized boards used for CDMS II
– Fewer connections, lower power draw => more robust
September 25, 2007 55
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Center for Particle Astrophysics
SuperCDMS Cryogenics Design• Cryogen-free dilution refrigerator
– Much lower operations and maintenance cost
• Larger volume to accommodate more detectors– More robust thermal connections than in CDMS II
September 25, 2007 56
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Center for Particle Astrophysics
Scientific reach of CDMS at Soudan
CDMS II - Current
CDMS II - Current
CDMS II -projected
CDMS II -projected
EdelweissEdelweissZEPLIN-1
ZEPLIN-1DAMA
SUSY Models
new XENON10 preprint
new XENON10 preprint
September 25, 2007 57
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Center for Particle Astrophysics
Schedule and Budget summary
September 25, 2007 59
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Center for Particle Astrophysics
• Variety of techniques search for WIMP dark matter - interesting sensitivity
• Several have the potential to reach 10-44 cm2 soon and 10-
46 cm2 in future
Status of Direction Detection Search
1 ev/kg/month
1 ev/kg/year
1 ev/ton/year
DAMA
KIMS
CRESST
EDELWEISS
ZEPLIN II
WARP
CDMS Soudan 2004+2005
XENON10 APS2007
CDMS Soudan Proj
SuperCDMS SNOLab ProjLUX 300kg Proj1 ev/10 kg/year