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ATLAS Heavy Ions
Executive Summary: Challenged by DOE in 9/2005 to: Firm up our plans (needs matched to concrete resources). Get personnel commitments from collaborators under the “no
new money in FY2006-07 (-08?)” constraint. Make progress on Heavy Ion Simulations & clarify ATLAS
detector advantages for Heavy Ion physics.
Status in 2/2006: Bottom-up needs evaluation: 34.5 person-years 2/2006-5/2009
220 Software subtasks Complete ZDC GANTT chart
BNL, Columbia, Iowa State, SUNYSB (Chem.): 54.5 FTE-years+ 21 FTE-years internationally. These are lower limits.
Significant simulation progress. Detector advantage studies beginning.
ATLAS HI Milestones
So far: Feb. 2006: “Healthy” HI events simulated and
reconstructed in ATHENA. May 2006: CSC: Central Services Challenge
ATLAS mock data challenge July 2006: ZDC LOI approved by ATLAS Sept. 2006: ATLAS ZDC presentation to LHCC Oct. 2006: Physics Performance Report
0th order algorithms needed June 2007: Pilot run for pp (ZDC & HI Software) Nov. 2008: Ready for PbPb run
ATLAS HI Tier 1 must be ready also May 2009: Ready to publish…
Personnel – current commitments
BNL, Columbia, Iowa State, SUNYSB(Chm) committed to ATLAS with current funding levels.
A little more money for postdocs & travel would, of course, help.
ATLAS HI FTE Projection
0
5
10
15
20
25
30
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Quarter (0=CY2005Q2)
FT
Es
Series1
Series2
Series3
CY 2006CY 2006 CY 2007CY 2007 CY 2008CY 2008
US FTEs
Non-US FTEs
Total FTEs
10
20
30
5
15
25
ZDC
FY 05 FY 06 FY 07 TotalPre-R&D 0R&D 5 5CDR 0PED/EDIA 25 27 52Construction 80 140 220Preops 0
TEC 0 105 167 272TPC 5 105 167 277
Planned RedirectNeeded New Funds (TPC-redirect) 5 105 167 277
ZDC Calorimeter Construction
Constant FY 05 $k
Proposal: Use BNL-NP baseline capitalComplete project plan available
Note: Collaborating with Zeller et al. (HEP) from Yale
Operations Budget
U.S. Atlas Heavy Ion Physics - Operations
Constant FY 05 $k
FY06 FY07 FY08 FY09
Costs US BNL BNL US BNL BNL US BNL BNL US BNL BNL
total total new total total new total total new total total new
Labor 870 490 0 1690 950 0 2210 1130 70 3310 1310 160
MST 192 70 0 329 108 0 426 130 18 620 150 38
Computing 50 50 0 50 50 0 325 325 325 350 350 350
M&O Cat.A 41.6 16 0 105 38.5 0 146 48.8 6.1 249 63.9 14.2
Total 1154 626 0 2174 1147 0 3107 1634 419 4529 1874 562
Staffing
U.S. Authors 13 5 0 19 7 0 24 8 1 35 9 2
FTE's 6.2 2 0 13.9 3.8 0 18.6 5 0.8 27 6 1.8
Assumes additional university manpower in FY09 over current commitments& 1 new BNL postdoc in FY08 & FY09
ATLAS Heavy Ions @ LHC
Barnes committee: Primary LHC HI goals
1. Properties of initial state: Low-x physics (CGC)
2. Thermalization and collective motion (sQGP)
3. Jets and jet quenching (QGP)
ATLAS Strengths Acceptance (=2, =10) goals 1, 2, 3
Calorimeter segmentation goals 1, 2, 3
Clean Muon spectrometers goals 1, 3
High rate Trigger, DAQ goals 1, 3
Synergy w/ high energy ATLAS groups
Critical to success of whole program
ATLAS Calorimetery
EM Long. Segmentation
Hadronic Barrel
Hadronic EndCap
EM EndCap
EM Barrel
Forward
Unique Longitudinal Segmentation
Full EMCAL response Layers 2&3 alone are cleanerUsing Layer 0&1 as absorbers
Recent simulation: Cole, Leltchouk, Grau (Columbia U.)
2&3
Jet “Signal”/ HIJING “Noise”
Full EMCAL response Layers 2&3 onlyS/N twice as good.Unique to ATLAS
ATLAS HI Summary
Why ATLAS (vs. CMS or ALICE)? ATLAS detector superior for jet-finding
Better resolution & longitudinal segmentation for understanding the “background” of the underlying event than CMS.
ALICE calorimeter is not in the same league. BNL/QCDLab as host for RHIC & ATLAS makes this
natural
Good progress since September 2005 Better planning Committed Collaborators Studies underway
ATLAS HI Backup
Tasks (through May 2009)
Software: 220 tasks for 31.5 person-years ATHENA/Simulations
1.5 person-year (starting now) Day 1 Readiness + Physics results
3 person-years + 1.5 person-year Quarkonia + Publication
1.5 person-year + 0.5 person-year Tracking
1.5 person-years Jet finding/reconstruction – Main Physics Focus
19 person-years Project Management
3 person-years
ZDC: 3 person-years
Operations w/ just committed manpower
U.S. Atlas Heavy Ion Physics - Operations
Constant FY 05 $k
FY06 FY07 FY08 FY09
Costs US BNL BNL US BNL BNL US BNL BNL US BNL BNL
total total new total total new total total new total total new
Labor 870 490 0 1690 950 0 2140 1060 0 2160 1060 0
MST 192 70 0 329 108 0 426 112 0 441 112 0
Computing 50 50 0 50 50 0 325 325 325 350 350 350
M&O Cat.A 41.6 16 0 105 38.5 0 146 42.7 0 178 49.7 0
Total 1154 626 0 2174 1147 0 3037 1540 325 3129 1572 350
Staffing
U.S. Authors 13 5 0 19 7 0 24 7 0 25 7 0
FTE's 6.2 2 0 13.9 3.8 0 18.6 4.2 0 19.1 4.2 0
Operations from 9/2005
U.S. Atlas Heavy Ion Physics - Operations
Constant FY 05 $k
FY06 FY07 FY08 FY09
Costs US BNL BNL US BNL BNL US BNL BNL US BNL BNL
total total new total total new total total new total total new
Labor 445 295 0 880 500 80 1320 750 205 1790 840 295
MST 135 55 0 275 105 35 420 150 75 620 170 95
Computing 50 50 0 50 50 0 325 325 325 350 350 350
M&O Cat.A 25 10 0 60 25 5 90 35 15 135 40 20
Total 655 410 0 1265 680 120 2155 1260 620 2895 1400 760
Staffing
U.S. Authors 9 4 0 17 7 2 24 9 4 35 10 5
FTE's 4.5 1.5 0 10.5 3.5 1.5 18 6 3.5 27 7 4.5
Low-x