The Nosecone Calorimeter an update
-
Upload
anjolie-beard -
Category
Documents
-
view
28 -
download
1
description
Transcript of The Nosecone Calorimeter an update
![Page 1: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/1.jpg)
The Nosecone The Nosecone CalorimeterCalorimeter
an updatean updatePHENIX DC Upgrades MeetingPHENIX DC Upgrades Meeting
R. SetoR. Seto
Nov. 8, 2005Nov. 8, 2005
![Page 2: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/2.jpg)
plan for todayplan for today
Rich (a completely bureaucratic talk)Rich (a completely bureaucratic talk) Physics motivationPhysics motivation
simulations (also covered by EK)simulations (also covered by EK) collaboration/managementcollaboration/management FundingFunding CDR preparationCDR preparation
EduoardEduoard Update on Technology solutionUpdate on Technology solution
simulationssimulations R and D R and D
Present tasksPresent tasks
![Page 3: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/3.jpg)
Physics Physics Motivation/SimulationsMotivation/Simulations
Heavy Ion PhysicsHeavy Ion Physics hard scatteringhard scattering
Gamma-jetGamma-jet heavy flavorheavy flavor
Chic Chic charm charm
pA collisions and the CGC and pA collisions and the CGC and Nucleon structure Nucleon structure
direct photonsdirect photons dileptonsdileptons hadronshadrons jetsjets
Spin Structure Spin Structure Delta GDelta G
Gamma-jetGamma-jet NCC will help both low-x and high -NCC will help both low-x and high -
xx TransversityTransversity W’s (isolation)W’s (isolation)
Pi0 Pi0 at high E, at high E,
two photonstwo photons total Etotal E assymassym
PhotonsPhotons ElectronsElectrons JetsJets
NCC
in pp, pA, AAin pp, pA, AA 1<y<31<y<3
MPC 3<y<4MPC 3<y<4
Coverage by calorimetry -4<y<4
together with VTX, PHENIX becomesa large acceptance ~4π detector
![Page 4: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/4.jpg)
reminder and summary of reminder and summary of “old” simulations“old” simulations
Energy resolution 20%/sqrt(E)Energy resolution 20%/sqrt(E) Jet energy measurement possible 100%/sqrt(E)Jet energy measurement possible 100%/sqrt(E) CC
measurements possible to measurements possible to ~2.5 in central Au-Au~2.5 in central Au-Au Direct photon measurements Direct photon measurements
in Au-Au (for in Au-Au (for -jet measurements)-jet measurements) ~1, p~1, pTT> 6> 6
~1.5, p~1.5, pTT> 8> 8
~2, p~2, pTT> 10> 10
in pp and dAu in pp and dAu all all ~2, p~2, pTT> 2-4 depending on > 2-4 depending on
![Page 5: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/5.jpg)
electron energy resolution
jet energy measurement
hadroniccompartment
vasily
![Page 6: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/6.jpg)
hadron rejection ~10hadron rejection ~10-2-2 to 10 to 10--
33
charged pi in pp
remainder after cut
cut is based on longitudinal shower shape only (we will need to include the lateralshape in the algoritm)
hadron rejectionratio
vasily
![Page 7: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/7.jpg)
measuring the measuring the χχCC
Central 0-10% Au-Au mCentral 0-10% Au-Au m-m-m (with background) (with background)
Assume RHIC II statistics, i.e. 10x our planAssume RHIC II statistics, i.e. 10x our plan use 10X (10% central of run 8 – 1500 ub-1)use 10X (10% central of run 8 – 1500 ub-1)
=2.5-3.0=2.5-3.0
=2.0-2.5=2.0-2.5
=1.5-2.0=1.5-2.0
=1.0-1.5=1.0-1.5
backgroundbackgroundsubtractedsubtracted
![Page 8: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/8.jpg)
Direct photons: central Au+Au
y=1-1.5
pt
dir photonFrom Pythia(5GeV cut)
bkg (simulated)
bkg (extrapolated)
Problem is pile up faking a photon, pessimistic evaluation (no gamma/pi0 rejection)
Problem worst at high y since the effective segmentation is larger Statistics is central 10% of run 8 – 1500 ub-1
pi0’s is from fitting Au-Au pi0
dir photon
lack bkg statisticfor study
=1-1.5 =1.5-2
=2.5-3=2-2.5
Ok to ~2.5 At ~1. require pT~6 GeV Below that we have to
subtract statistically
![Page 9: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/9.jpg)
=1-1.5 =1.5-2
=2.5-3=2-2.5
All OK
=1-1.5 =1.5-2
=2.5-3=2-2.5
central 20% dAucentral 20% dAu pppp
10 GeV 10 GeV 10 GeV 10 GeV 10 GeV 10 GeV
10 GeV 10 GeV pt
![Page 10: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/10.jpg)
The plots for the Edep rejection are attached. The cuts are cone radius R1=0.25, R2=0.5, R3=0.75, R4=1.0, where R=sqrt(deta**2 + dphi**2) as usual. The blue histograms are for W->mu, and the red histograms are for jet events. In the Pythia events I triggered on pt >= 10 GeV muons from W, and on charged hadrons for the jet events, in the acceptance of the muon arms, and then integrated all the energy in a cone radius (and in the acceptance of the NCC), with a response of 1 for photons and electrons, 0.5 for pi,K,p, and 0.4 for neutrals (K0L, n). The distributions are normalized to 1.
In eff_rej I plot the rejection of the jet events (reddish histograms) and the efficiency for the W->mu (bluish histograms). For the W->mu efficiency curves, it goes as R1 to R4, from top to bottom, while for the jet rejection curves, it goes from R4 to R1, top to bottom.
W isolation Mickey
R4<1R3<.75R2<.5R1<.25D0 uses R<.4
R1
R1
R4
R4
R1 for R<R3kill 90% of jetskeep 80% W’s
W eff
jet rejection
Energy around W muons
Energy around jet
require PT>10 GeV
![Page 11: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/11.jpg)
new PISA studiesnew PISA studies
NCC in pisa (Vasily); not “final” design NCC in pisa (Vasily); not “final” design found “normalization”found “normalization” Clustered “photons” w/ primitive clustering algoritmClustered “photons” w/ primitive clustering algoritm Found energy and position of each photonFound energy and position of each photon No pi0/gamma used yetNo pi0/gamma used yet
Threw sample of single pi0’s for reconstruction Threw sample of single pi0’s for reconstruction excerciseexcercise 1 to 5 GeV momentum1 to 5 GeV momentum 10-30 degrees10-30 degrees both gammas had to hit NCCboth gammas had to hit NCC required gamma to be separated by 2 cmrequired gamma to be separated by 2 cm required E1 and E2 > 0.5 GeVrequired E1 and E2 > 0.5 GeV |E1-E2|/(E1+E2)<0.5|E1-E2|/(E1+E2)<0.5
![Page 12: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/12.jpg)
Energy Energy resolutionresolution
31%/sqrt(E) for higher E
22%/sqrt(E) for E<5
E (GeV)
E (GeV)
Position Resolution
cm
![Page 13: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/13.jpg)
displaydisplay
top lefttop left
all 3 viewsall 3 views
bottom rightbottom right
3 views3 views
colors are colors are photons photons foundfound
““mass” is mass” is real massreal mass
““mass mass recon” – recon” – is is reconstrureconstructed cted massmass
1C 2C 3Cg/pi0
1C1C
2C
2C
g/pi0
3C
3C
all compartments
![Page 14: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/14.jpg)
the gamma/pi0 at workthe gamma/pi0 at work
![Page 15: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/15.jpg)
pi0 resolution E<5 GeVpi0 resolution E<5 GeV
input from pisa to NCCinput to pisasmear mass
final mass reconbut use real angles
final mass reconstructedafter cluster finding etc
GeV
GeV
GeV
GeV
![Page 16: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/16.jpg)
Now add other particlesNow add other particles Primary sample pi0: 1-5 GeVPrimary sample pi0: 1-5 GeV add charged pi’s 1-5 GeVadd charged pi’s 1-5 GeV So extra particles add bkg So extra particles add bkg
do mixed subtraction in AuAudo mixed subtraction in AuAu
pi0 only
add 1 pi
add 2 pi
add 4 pi
bkg
![Page 17: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/17.jpg)
future studies (next month)future studies (next month)
PerformancePerformance to what energy does 2photon+asym pi0 detection work?to what energy does 2photon+asym pi0 detection work? How much can we improve direct photon using How much can we improve direct photon using
gamma/pi0gamma/pi0 Study what can be done with current jet energy resolutionStudy what can be done with current jet energy resolution
PhysicsPhysics redo redo χχCC and direct photon study with more realistic assumptions and direct photon study with more realistic assumptions
(resolutions etc)(resolutions etc) simulation correlation and error bars onsimulation correlation and error bars on
photon – jet (pi0) in AuAuphoton – jet (pi0) in AuAu measure x in direct photon and photon-photon in pp (spin)measure x in direct photon and photon-photon in pp (spin)
i.e. delta G measurementi.e. delta G measurement Reaction plane measurement (Shinichi)Reaction plane measurement (Shinichi)
![Page 18: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/18.jpg)
CollaborationCollaboration USAUSA
BNL:labBNL:lab Physics (Management, Design, Physics (Management, Design,
Integration, engineering etc)Integration, engineering etc) Instrumentation (engineering, Instrumentation (engineering,
Gamma/pi0 design, front end Gamma/pi0 design, front end chip)chip)
UCR (Simulations, management, UCR (Simulations, management, software)software)
ISU (Trigger, Simulations)ISU (Trigger, Simulations) UIUC (Simulations, Physics ideas)UIUC (Simulations, Physics ideas) Nevis (chi – FEE readout)Nevis (chi – FEE readout)
Korea (Si- pads/gammapi0)Korea (Si- pads/gammapi0) YonseiYonsei EwhaEwha SENS: companySENS: company ERTI:companyERTI:company
JapanJapan Riken (lab)Riken (lab)
Czech Republic (Gamma/pi0 Czech Republic (Gamma/pi0 testing, constuction)testing, constuction) Charles UCharles U Academy of SciencesAcademy of Sciences Prague Tech UPrague Tech U ON semiconductor:companyON semiconductor:company
RussiaRussia Moscow State U (Si pad design, Moscow State U (Si pad design,
testing, engineering)testing, engineering) JINR-Dubna – 2 groups (lab) JINR-Dubna – 2 groups (lab)
(Engineering, Mechanics, (Engineering, Mechanics, tungsten, assembly)tungsten, assembly)
MEPHI (front end electronics)MEPHI (front end electronics) Ekaterinbourg (company- board (company- board
assembly)assembly) RIMST-ELMA (company-RIMST-ELMA (company-
Si construction)Si construction)
![Page 19: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/19.jpg)
Management PlanManagement Plan
We will have to work out a We will have to work out a management structure – once we management structure – once we have all the responsibilities assigned have all the responsibilities assigned For construction (EK)For construction (EK) For Money DOE/Riken/Other (RKS)For Money DOE/Riken/Other (RKS)
![Page 20: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/20.jpg)
FundingFunding Small amount of funding so far for R and DSmall amount of funding so far for R and D
Riken, UCR, BNL, Local Russian funding for themselves, Riken, UCR, BNL, Local Russian funding for themselves, Czech for themselves (a fair amount)Czech for themselves (a fair amount)
What do we need?What do we need? R and DR and D I claim with $3M in cash we can build one sideI claim with $3M in cash we can build one side
this might change as we do a better cost estimate in the next this might change as we do a better cost estimate in the next month month
Purchasing Si and W now (~200K worth Riken)Purchasing Si and W now (~200K worth Riken) Major funding (hopes!!!)Major funding (hopes!!!)
Riken $1.5MRiken $1.5M DOE ~$2m - $5MDOE ~$2m - $5M Other ~$1MOther ~$1M
Major question - timingMajor question - timing
![Page 21: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/21.jpg)
Schedule in the next couple Schedule in the next couple monthsmonths
CDRCDR Skeleton in CVS (CVS co offline/analysis/NCCCDR)Skeleton in CVS (CVS co offline/analysis/NCCCDR) Major tasksMajor tasks
WritingWriting Cost estimateCost estimate TimelineTimeline
Dec ~4 CDR to collaborationDec ~4 CDR to collaboration EC/DC etc reviewEC/DC etc review
Jan Jan BNL ReviewBNL Review
Feb – To DOEFeb – To DOE Beam Tests – now at Dubna (Vasily/Andrei with Merkin, Litvinenko etc) Beam Tests – now at Dubna (Vasily/Andrei with Merkin, Litvinenko etc)
beam test 9beam test 9thth to 13 to 13thth (1 (1stst prototype) prototype) Korea Trip Nov 14-18 – EK/RKSKorea Trip Nov 14-18 – EK/RKS
In the next yearIn the next year Large prototype being designed (with gamma/pi0)Large prototype being designed (with gamma/pi0) Full electronicsFull electronics
![Page 22: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/22.jpg)
CommissionNCC proto 1
Old Gannt chart from LOI
![Page 23: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/23.jpg)
CDR writing/reading teamCDR writing/reading team
Readers Readers PHENIX folksPHENIX folks
Ahbay - spin, and pAAhbay - spin, and pA Ed Kinney - SpinEd Kinney - Spin Atsushi - lots of it (design Atsushi - lots of it (design
etc)etc) Matthias - lots of it.Matthias - lots of it. Ken – spinKen – spin Miraslov Finger (Charles Miraslov Finger (Charles
Univ)Univ) Outside folksOutside folks
Raju Venugopalan (pA - Raju Venugopalan (pA - saturation)saturation)
Mark Strickman - nucleon Mark Strickman - nucleon strucutrestrucutre
Dima KharzeevDima Kharzeev
writers writers RKSRKS EKEK Mickey (spin)Mickey (spin) Jen-Chieh (pA and nucleon Jen-Chieh (pA and nucleon
structure)structure) Mark Strikman (pA and Mark Strikman (pA and
nucleon structure)nucleon structure) John L (hard scattering)John L (hard scattering) jamie (charm and chic)jamie (charm and chic)
Could use another person Could use another person in each of spin, heavy ion, in each of spin, heavy ion, pApA
![Page 24: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/24.jpg)
CDR OutlineCDR Outline 1. Executive Summary (RKS)1. Executive Summary (RKS) 2. Physics Overview2. Physics Overview
(a) Heavy Ion Physics(a) Heavy Ion Physics i. Gamma-jet (John L I hope)i. Gamma-jet (John L I hope) ii. Chic (Jamie)ii. Chic (Jamie) iii. charm (Jamie)iii. charm (Jamie)
(b) pA collisions and the CGC (b) pA collisions and the CGC (Jen-Chieh+R. Seto)(Jen-Chieh+R. Seto)
i. direct photonsi. direct photons ii. dileptonsii. dileptons iii. hadronsiii. hadrons iv. jetsiv. jets
(c) Spin Structure of the (c) Spin Structure of the nucleon (Mickey - how much?)nucleon (Mickey - how much?)
i. Wi. W ii. Delta G Gamma-jetii. Delta G Gamma-jet iii. Transversityiii. Transversity
(d) Nucleon structure (Jen-(d) Nucleon structure (Jen-Chieh)Chieh)
3. Physics 3. Physics Measurements with Measurements with the NCC (RKS)the NCC (RKS) (a) Performance(a) Performance
i. Pi0i. Pi0 ii. Photonsii. Photons iii. Electronsiii. Electrons iv. Jetsiv. Jets
(b) Physics reach(b) Physics reach i. Heavy Ion Physicsi. Heavy Ion Physics ii. Spin Structureii. Spin Structure iii. Nucleon Structureiii. Nucleon Structure
(c) Physics reach with (c) Physics reach with the all Upgradesthe all Upgrades
![Page 25: The Nosecone Calorimeter an update](https://reader036.fdocuments.us/reader036/viewer/2022062720/5681345b550346895d9b3fdb/html5/thumbnails/25.jpg)
outline (cont)outline (cont)
4. The design of the NCC (EK)4. The design of the NCC (EK) (a) Overview(a) Overview (b) The Calorimeter(b) The Calorimeter (c) EM compartment(c) EM compartment (d) Hadronic compartment(d) Hadronic compartment (e) Gamma pi0 detector(e) Gamma pi0 detector (f) Electronics(f) Electronics (g) Mechanics and Cooling(g) Mechanics and Cooling (h) Integration(h) Integration (i) Triggering(i) Triggering
5. R and D (EK)5. R and D (EK) 6. Project Management and 6. Project Management and
Responsibilities (RKS)Responsibilities (RKS) (a) Overview(a) Overview (b) Management Structure(b) Management Structure (c) Responsibilities(c) Responsibilities
7. 7. Budget and Schedule (RKS, Budget and Schedule (RKS, EK)EK)
(a) Total Estimated Cost (TEC)(a) Total Estimated Cost (TEC) (b) Contingency Analysis(b) Contingency Analysis (c) Overhead(c) Overhead (d) Budget(d) Budget (e) Fiscal Responsibilities(e) Fiscal Responsibilities (f) Schedule(f) Schedule
8. 8. AppendicesAppendices