ATLAS: Setting the SceneFred

ATLAS Hardware

RayProductionAssembly

JoeQA

Data base

JoReception

Testing

Trigger

ThorstenL1/HLT

Physics

Sarah(Fred)WW

PaulInstallation

Testing

SteveField mapAlignment

Sarah’s 2005 : WW ScatteringWW scattering at high mass (MWW ~ 1-2TeV):

Considered several possible signals against W+jets and ttbar backgrounds.Analysis: pT cuts (>320GeV) on each of the W’s

E (>300GeV) and η (>2.5) cuts on tag jets + further environment cuts.Studied optimum way to define hadronic W (2 overlapping jets), compared kT and cone algorithms.

Also joined in with ATLAS full simulation effort:

• in initial selection of events with lepton and ET

miss, found 65 % fewer events than ATLFAST,

• effect of subsequent cuts was ~ as predicted.More issues to be investigated yet:

•how to implement our hadronic W finding in full simulation,

• how well are backgrounds (W+jets) modelled,

• how to convince someone to make millions of background events for us?

TO BE CONTINUED…TO BE CONTINUED… Simon Head Simon Head (Manchester),(Manchester),

Stathis Stefanadis (UCL)Stathis Stefanadis (UCL)

Fast simulation of ATLAS detector (ATLFAST):

TO APPEAR IN A THESIS NEAR YOU SOON.TO APPEAR IN A THESIS NEAR YOU SOON.

For 30fb-1 s/b s/√b

Double Resonance 4.1 12.5

No Resonance 1.5 4.7

W+jetsttbar

ATLAS Hardware

RayProductionAssembly

JoeQA

Data base

JoReception

Testing

Trigger

ThorstenL1/HLT

Physics

Sarah(Fred)WW

ChrisTop

JamesJet gaps

SimonWW

WorkingGroups

HiggsSarah

Brian/Fred

DiffractiveIrina/Pilko/Will

Brian/Fred

TopChris

Mike/ThorstenJo

SMSteve

IrinaDiffractive

PilkoDiffractive

WillDiffractive

PaulInstallation

Testing

SteveField mapAlignment

ATLASsLHCsSCT

SoIManchester on

No fte’s

ProposalSpring 2006Manchester ?

R&D2006-09

• 2015: End of life of inner detector Increase in luminosity (x10) sLHC

• 2006: Start of 3-year R&D for SCT Radiation hard detector

Thermal/Mech engineeringIntegrated coolingOpto-electronicsReadout (x10 channels)

22 SY/year £650k/year

• 2090: sLHC decision Trigger upgrade proposal

• 2010: Start of 5-year build & install SCT 65 SY/year (Manchester 2-3/year) £27M overallProd/Install

2010-2015

ATLASsLHCsSCT

SoIManchester on

No fte’s

ProposalSpring 2006Manchester ?

R&D2006-09

FP420

Brian

Prod/Install2010-2015

(Irina)PilkoWill