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