Post on 15-Jan-2016
description
1PhiPsi2011 BINP, Novosibirsk
Johann Zmeskal, SMI Viennafor the PANDA collaboration
at
an overview
International Workshop on e+e- collisions from Phi to Psi
September 19-22, 2011, Budker INP, Novosibirsk, Russia
Existing facility - GSI:UNILAC < 15 MeV/uSIS < 1-2 GeV/uESR < 0.8 GeV/u
Facility for Antiproton and Ion ResearchPhiPsi2011 BINP, Novosibirsk
2
HESR
PANDA
SIS 100SIS 300
SIS 18
CR/RES
R
FLAIR
NESR
SuperRFS
FAIR @ GSIFAIR @ GSI
3PhiPsi2011 BINP, Novosibirsk
Facility for Antiproton and Ion Facility for Antiproton and Ion ResearchResearch
4PhiPsi2011 BINP, Novosibirsk
PANDA
Facility for Antiproton and Ion Facility for Antiproton and Ion Research Research
Antiproton production
• bunched mod• 50 ns bunches • cycle time: 10 s• 108 per bunch
Parallel OperationHigh duty cycleRapidly cycling magnets
SIS300
5PhiPsi2011 BINP, Novosibirsk
Five Pillars of Research at FAIRFive Pillars of Research at FAIR
Nuclear Structure Physics and Nuclear Astrophysics with RIBs
Hadron Physics with Antiproton Beams
Physics of Nuclear Matter with Relativistic Nuclear Collisions
Atomic Physics and Applied Science with Highly Charged Ions and Low Energy Antiprotons
Plasma Physics with Highly Bunched Beams
PhiPsi2011 BINP, Novosibirsk 6
Stochastic cooling
Stochastic cooling
Injection
Electroncooler
High Energy Storage Ring Up to 1011 stored antiprotons
Beam momentum: (1.5 ... 15) GeV/c Phase-space cooling
Fixed internal target
Operation modesa) High luminosity:
L = 2 · 1032 cm-2 s-1 p/p 10-4
b) High resolution: L = 1031 cm-2 s-1 p/p 4 · 10-5
PANDA @ HESRPANDA @ HESR
PhiPsi2011 BINP, Novosibirsk 7
Particle physics
Hadron physics
Nuclear physics
Study the strong interaction with antiprotons
Questions ... Mechanism of
confinement ? Inner structure of
hadrons ? Origin of mass
and spin (macroscopic properties) ?
Exotic colour neutral objects?
Physics goals of PANDAPhysics goals of PANDA
8PhiPsi2011 BINP, Novosibirsk
HadronHadron SpectroscopySpectroscopy Experimental Goals: mass, width & quantum numbers of resonances
Charm Hadrons: charmonia, D-mesons, charm baryons to understand new XYZ states, Ds(2317) and others
Exotic QCD States: glueballs, hybrids, multi-quarks Spectroscopy with Antiprotons:
Production of states of all quantum numbers Resonance scanning with high resolution
Physics goals of PANDAPhysics goals of PANDA
9PhiPsi2011 BINP, Novosibirsk
Nuclear PhysicsNuclear Physics
Charm in the MediumM
esons in nuclear matterM
asses change in nuclei D-mass lower Lower D D threshold
J/ψ absorption in nuclei
Hypernuclei3
rd dimension in nuclear chartD
ouble hypernuclei production via Ξ- capture Λ Λ interaction in nucleus
Other topicsS
hort range correlationsC
olor transparency
Physics goals of PANDAPhysics goals of PANDA
10PhiPsi2011 BINP, Novosibirsk
Physics goals of PANDAPhysics goals of PANDA
HadronHadron StructureStructure Generalized Parton Distributions
➔ Formfactors and structure functions
Timelike Nucleon Formfactors Drell-Yan Process full PWA or polarized beam/target
PANDA Physics Report www-panda.gsi.de
11PhiPsi2011 BINP, Novosibirsk
PANDA Detector @ FAIRPANDA Detector @ FAIR
13 m
12PhiPsi2011 BINP, Novosibirsk
PANDA RequirementsPANDA RequirementsPhysics benchmarks:
Hybrid charmonium: e.g. 7 photons, PWA
Charmonium decays: e.g. J/Ψ→ e+e- /µ+µ-, or with π0 and γ
Charm mesons: Weak decays in K0
S and K±
Hypernuclei: Hyperon cascades
Wide angle Compton scattering: High energy photons
Proton formfactors: Efficient e±
identification
Detector requirements:
4π acceptance
High rate capability: 2x107 s-1 interactions
Efficient event selection
Continuous acquisition
Momentum resolution ~1%
Vertex info for D, K0
S, Y (cτ = 317 µm for D±)
Good tracking
• Good PID (γ, e, µ, π, K, p)
Cherenkov, ToF, dE/dx
γ-detection 1 MeV – 10 GeV
Crystal Calorimeter
13PhiPsi2011 BINP, Novosibirsk
The PANDA SpectrometerThe PANDA Spectrometer
TargetTarget SpectrometerForward Spectrometer
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PANDA - detection conceptPANDA - detection concept
PhiPsi2011 BINP, Novosibirsk 15
TARGET SPECTROMETER FORWARD
SPECTROMETERDipole
Muon
ID
RICHVertex
Central Tracker
Electromag. Calorimeters
MuonRange System
Drift
ChambersSolenoid Target
DIRC
The PANDA SpectrometerThe PANDA Spectrometer
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Beam pipeBeam pipe
The PANDA SpectrometerThe PANDA Spectrometer
Micro Vertex DetectorMicro Vertex Detector
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The PANDA SpectrometerThe PANDA Spectrometer
Central trackerCentral tracker
Forward GEM Forward GEM trackertracker
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The PANDA SpectrometerThe PANDA Spectrometer
Cherenkov detectorsCherenkov detectors
19PhiPsi2011 BINP, Novosibirsk
The PANDA SpectrometerThe PANDA Spectrometer
Electromagnetic crystal Electromagnetic crystal calorimeterscalorimeters
20PhiPsi2011 BINP, Novosibirsk
The PANDA SpectrometerThe PANDA Spectrometer
Instrumented Instrumented yokeyoke
Solenoid Solenoid magnetmagnet
21PhiPsi2011 BINP, Novosibirsk
The PANDA SpectrometerThe PANDA Spectrometer
MuoMuonn
filterfilterTargTarg
etet LuminosiLuminosityty
monitormonitor
Dipole Dipole magnmagn
etet
22PhiPsi2011 BINP, Novosibirsk
The PANDA SpectrometerThe PANDA Spectrometer
DriftDriftchambechambe
rsrs
Muon Muon range range systemsystem
DIRCDIRC
23PhiPsi2011 BINP, Novosibirsk
Superconducting magnet Central field: |B| = Bz = 2 T High field homogeneity:
2% Dimensions inner bore:
1.9 m / length: 2.7 m
Coil and cryostate
z beam
axis
Target pipewarm hole
Outer yoke dimension: 2.3 m / length: 4.9 m
Total weight: ~ 300 t
Iron flux
return yoke
Laminated layers for
muon range system
PANDA - SolenoidPANDA - Solenoid
24PhiPsi2011 BINP, Novosibirsk
Superconducting magnet Field integral
(bending power): 2 Tm
Deflection of antiprotons with p =15 GeV/c: 2.2°
Bending variation: 15% Vertical acceptance: 5° Horizontal acceptance: 10° Total weight: 200 t
Forward tracking detectors partly integrated
PANDA – Dipole magnetPANDA – Dipole magnet
25PhiPsi2011 BINP, Novosibirsk
Beam pipe
Target pipe
Target dumping
system
Target production
Vacuum pumps(VP)
(VP)
(VP)
(VP)
~ 2
m
Injection point
• Primary target setup Appropriate cut-outs
in solenoid magnet Beam-target cross Design compatible
with all different options
PANDA – Target systemPANDA – Target system
26PhiPsi2011 BINP, Novosibirsk
Cluster-jet target Well adjustable density Constant luminosity Cluster size:
100 ... 1000 atoms
PANDA – Cluster-jet target systemPANDA – Cluster-jet target system
Full-size prototype Achieved density:
max. 8 1014 atoms / cm2
Stable operation Further density increase:
New nozzle design
27PhiPsi2011 BINP, Novosibirsk
Pellet target Higher density Better vertex definition
Pellet tracking system Pellet size: 30 m Pellet frequency: 10 kHz Problem:
Luminosity variations Smaller pellet sizes Higher frequency
Dedicated prototypes Achieved density:
4 1015
atoms / cm2
Pellet stream: 3 mm
Hydrogen droplets: < 10 m, 144 kHz
PANDA – Pellet target systemPANDA – Pellet target system
28PhiPsi2011 BINP, Novosibirsk
Forward spectrometer
Forward spectrometer
Target spectrometerTarget spectrometer
Micro-VertexDetector
Micro-VertexDetector
Central tracking (Helix fit)
Central tracking (Helix fit)
Forward tracking(Straight lines)
Forward tracking(Straight lines)
Straw-tubelayers
Straw-tubelayers
Outer trackerOuter
trackerGEM
stationsGEM
stations
PANDA – TrackingPANDA – Tracking
29PhiPsi2011 BINP, Novosibirsk
Design of the MVD4
barrels and 6 disksC
ontinuous readoutI
nner layers: hybrid pixels (100x100 µm2)
Outer layers: double sided strips:
Rectangles & trapezoids
NXYTER readout
Mixed forward disks (pixel/strips) Challenges
Low mass supports
Cooling in a small volume
Radiation tolerance
PANDA – Micro Vertex DetectorPANDA – Micro Vertex Detector
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Central Tracker σrφ~150µm , σz~1mm δp/p~1% (with MVD) Material budget ~1% X0
Straw Tube Tracker
27 µm thin mylar tubes, 1 cm Ø
Stability due to 1 bar overpressure
GEM Time Projection Chamber
Continuous sampling
GEMs to reduce ion feedback
Online track finding
Forward GEM Tracker Large area GEM foils Ultra thin coating
PANDA – Central trackerPANDA – Central tracker
PhiPsi2011 BINP, Novosibirsk
31PhiPsi2011 BINP, Novosibirsk
Detector Layout 4500 straws in 20-26 layers Tube made of 27 µm thin Al-mylar, Ø=1cm Rin= 150 mm, Rout= 420 mm l=1500 mm Self-supporting straw double layers at ~1 bar overp.(Ar/CO2)
Material Budget
Max. 26 layers,
0.05 % X/X0 per layer
Total 1.3% X/X0
Detector performance r/ resolution: 130 µm z resolution: ~ 1 mm Prototype test at COSY-TOF
PANDA – Straw tubesPANDA – Straw tubes
32PhiPsi2011 BINP, Novosibirsk
PANDA PID Requirements:Particle identification essential
Momentum range 200 MeV/c – 10 GeV/c
Different processes for PID needed
PID Processes: Cherenkov radiation: above 1 GeV Radiators: quartz, aerogel, C4F10
Energy loss: below 1 GeV Best accuracy with TPC Time of flight Problem: no start detector Electromagnetic showers: EMC for e and γ
PANDA – Particle IDentificationPANDA – Particle IDentification
33PhiPsi2011 BINP, Novosibirsk
Forward spectrometerForward spectrometerTarget spectrometerTarget spectrometer
Barrel DIRCBarrel DIRC RICHRICH
D etection of I nternally R eflected C herenkov light
Radiator material: Fused silica 3 /K separation
0.8 GeV/c p 5 GeV/cC
Radiator materials: Aerogel / C14F10
/K separation2 GeV/c p 15 GeV/c
R ing I maging CH erenkov detector
Disc DIRCDisc DIRC
PANDA – Cherenkov detectorsPANDA – Cherenkov detectors
34PhiPsi2011 BINP, Novosibirsk
Forward spectrometerForward spectrometerTarget spectrometerTarget spectrometer
Barrel EMCBarrel EMC Shashlyk calorimeterShashlyk
calorimeter
Endcap structures
Endcap structures
Operated at -25°C
Cristal: PbWO4
~ 15,000 cristals
Lead-scintillator sandwiches351 modules
(13 rows / 27 columns)
PANDA – CalorimeterPANDA – Calorimeter
35PhiPsi2011 BINP, Novosibirsk
Barrel Calorimeter 11000 PWO Crystals LA-SiPM readout, 2x1cm2
σ(E)/E~1.5%/√E + const.
End cap 4000 PWO crystals High occupancy in center LA-SiPM or VPT
PANDA PWO Crystals PWO is dense and fast Low γ threshold Increase light yield: - operation at -25°C (4xCMS) Challenges: - temperature stable to 0.1°C - control radiation damage - low noise electronics Delivery of crystals started
PANDA – CalorimeterPANDA – Calorimeter
36PhiPsi2011 BINP, Novosibirsk
Forward spectrometerForward spectrometerTarget spectrometerTarget spectrometer
Barrel tile hodoscope Barrel tile hodoscope
Time resolution: (50...100) psScintillator slabs or
pads of multigap resistive plate chambers (RPC)
Scintillator wallScintillator wall
Scintillator slabsTime resolution: ~ 50 ps
Quad module
Scintillator
SiPM
PANDA – Time-of-flight systemsPANDA – Time-of-flight systems
37PhiPsi2011 BINP, Novosibirsk
PANDA – DAQPANDA – DAQ
Self triggered readoutComponents:Time distribution systemIntelligent frontendsPowerful compute nodesHigh speed network
Data Flow:Data reductionLocal feature extractionData burst buildingEvent selectionData logging after online reconstruction
Programmable Physics Machine
38PhiPsi2011 BINP, Novosibirsk
• FAIR will offer unique opportunities for nuclear and hadron physics, plasma and
atomic physics
• PANDA is THE DETECTOR to access the physics in the charm quark sector Nearly 4 acceptance High momentum resolution ~1% Precise vertex resolution ~ 100 m Good particle identification ( , e, , , p ) Photon detection in a wide range ( 1 MeV ... 10 GeV) High energy resolution ~ few % (or better)
Technical design finished 2011 Installation in 2016
SummarySummary
39PhiPsi2011 BINP, Novosibirsk
U BaselIHEP BeijingU BochumIIT BombayU BonnIFIN-HH BucharestU & INFN BresciaU & INFN CataniaJU CracowTU CracowIFJ PAN CracowGSI DarmstadtTU DresdenJINR Dubna (LIT,LPP,VBLHE)U EdinburghU ErlangenNWU Evanston
U & INFN FerraraU FrankfurtLNF-INFN FrascatiU & INFN GenovaU GlasgowU GießenKVI GroningenIKP Jülich I + IIU KatowiceIMP LanzhouU LundU MainzU MinskITEP MoscowMPEI MoscowTU MünchenU MünsterBINP Novosibirsk
IPN OrsayU & INFN PaviaIHEP ProtvinoPNPI GatchinaU of SilesiaU StockholmKTH StockholmU & INFN TorinoPolitechnico di TorinoU & INFN TriesteU TübingenTSL UppsalaU UppsalaU ValenciaSMI ViennaSINS WarsawTU Warsaw
more than 400 physicists from 53 institutions in 16 countries
Thank you!