News from TrackingNews from Tracking
R. Meier Univ. Tübingen
Towards a straw tube tracker prototypeTowards a straw tube tracker prototype
PANDA outer tracking - status
Outer tracking subgroupOuter tracking subgroup
• JINR Dubna - Russia B. Morosov et al.
M. Sapozhnikov et al.• GSI Darmstadt - Germany
A. Sokolov et al.• INFN Frascati - Italy
P. Gianotti et al.• INFN Ferrara - Italy
D. Bettoni et al.• Jagiellonan Univ. Krakow
J. Smyrski• TU München - Germany
B. Ketzer et al.• Universität Tübingen - Germany
R. Meier et al.
• + +
Spokesperson: P. Gianotti
Joined Research Project Proposal for I3HPJoined Research Project Proposal for I3HP
JRA on the development of high speed gas detectors J. Wessels et al.JRA on the development of high speed gas detectors J. Wessels et al.
Approved
Joined Research Project Proposal for I3HPJoined Research Project Proposal for I3HP
JRP on the development of high speed gas detectors J. Wessels et al.JRP on the development of high speed gas detectors J. Wessels et al.
Approved
Charmonium States: FormationCharmonium States: Formation
Physics – charged particle trackingPhysics – charged particle tracking
)(2 ),(2 , KKKKc
)(2 KKc
Charmed Hybrids: ProductionCharmed Hybrids: Production
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1
gccpp
/ J
2
KK
PANDA trackingPANDA tracking
Cylindrical trackerCylindrical trackerMicrovertex detectorMicrovertex detector
Mini driftchambers
Requirements: Vertex resolutionTrack resolutionMomentum resolutionDetection efficiency
Material budgetRate capabilityRadiation hardnessTrigger capabilitySpace budgetHeat budget
Physics benchmarks
Other
subd
etecto
rs
Beam/Target conditions
PANDA trackingPANDA tracking
Forward trackingForward tracking
Mini drift chambersMini drift chambers
2 Prototype designs2 Prototype designs
Krakow J. SmyrskiKrakow J. Smyrski Dubna M. SapozhnikovDubna M. Sapozhnikov
INTAS application
Krakow MDC prototypeKrakow MDC prototype
PANDA central trackerPANDA central tracker
Straw tube tracker
• Spacial resolution: 150 m (r,) 1mm (z)• Rate capability• Existing model: WASA straw tube tracker• 2LT Trigger capability
• Structure material• Not usable as Cerenkov medium• Amplifiers on tubes •Number of tubes = number of cables
Straw tube tracker
• Spacial resolution: 150 m (r,) 1mm (z)• Rate capability• Existing model: WASA straw tube tracker• 2LT Trigger capability
• Structure material• Not usable as Cerenkov medium• Amplifiers on tubes •Number of tubes = number of cables
Time projection chamber
• Spacial resolution 100 m (r,) 1mm (z)• Low material budget• Drift volume transparent • dE/dx information for low mom. PID
• No existing design capable of continous beam operation• New developments required: GEM readout• Trigger capability?• Single event reconstruction?
Time projection chamber
• Spacial resolution 100 m (r,) 1mm (z)• Low material budget• Drift volume transparent • dE/dx information for low mom. PID
• No existing design capable of continous beam operation• New developments required: GEM readout• Trigger capability?• Single event reconstruction?
STTSTT TPCTPC
Cylindrical tracker
STT TPC
Simulation group design
WASA based design
GEM readoutprototype
Physics Requirements BenchmarksFeasibility
Reality
Towards a PANDA cylindrical trackerTowards a PANDA cylindrical tracker
Detailed discussion: Next PANDA meeting
• 9000 straw tubes.• 15 double layers• 2-14 layers are skewed with angle between 4-9o
• tube length – 1.5 m• tube diameters 4, 6, 8mm• inner radius - 15 cm.• outer radius – 42 cm.
• 9000 straw tubes.• 15 double layers• 2-14 layers are skewed with angle between 4-9o
• tube length – 1.5 m• tube diameters 4, 6, 8mm• inner radius - 15 cm.• outer radius – 42 cm.
Straw tube tracker for PANDAStraw tube tracker for PANDA
The WASA mini drift chamberThe WASA mini drift chamber
25/26-Aug Mini subgroup meeting at Uppsala
1738 Straws 4,6,8 mm17 Layers
Inner/outer radius 4/20 cmStraw length 40 cm
The WASA mini drift chamberThe WASA mini drift chamber
Design position resolution: 150m/1.5mm
Mechanical precision and stability: ‘massive‘ support structures
Design position resolution: 150m/1.5mm
Mechanical precision and stability: ‘massive‘ support structures
Straws
BeamPellet
1.2 mm Be/Al Outer cover 1% rl Front/Back wire mounting rings >2% rl
1.2 mm Be Beam pipe 0.3% rlSensitive volume 0.5% rl
WASA-based design for PANDA?WASA-based design for PANDA?
Design parameters included in simulation (A. Sokolov)
Now Maybe?
MVD
Straws
DIRC
Beam pipe
Inner cover
Outer cover
Scintillator barrel
Towards a PANDA cylindrical trackerTowards a PANDA cylindrical tracker
WASA based design
Low density STT
Foamstructure
Pressure stabilization
Carbon fiber structure
Readout design Mechanical structure
TDR
Prototypes
Rate capabilityHeat budgetSpace budgetTrigger capability
Physics benchmarksOther subdetectors req.Space budget
Feasibility
Self-Supporting StrawsSelf-Supporting Straws
Self-Supporting StrawsSelf-Supporting Straws
Self-Supporting StrawsSelf-Supporting Straws
Wire position fixed by 1mm thick Cu-coated belt
Coming up: tracking, position resolution testsComing up: tracking, position resolution tests
PANDA PrototypesPANDA Prototypes
Objectives:• Wire material• Straw material• Gas mixture• Straw geometry• Electronic coupling/readout• gravitational sagging (spacers?)• mechanical precision• WASA-based construction• Self-supporting construction• Radiation hardness/lifetime• In-beam position resolution
Objectives:• Wire material• Straw material• Gas mixture• Straw geometry• Electronic coupling/readout• gravitational sagging (spacers?)• mechanical precision• WASA-based construction• Self-supporting construction• Radiation hardness/lifetime• In-beam position resolution
Timeline?• Prototype definition end of 2003• Prototype design/construction first half 2004• Prototype tests second half 2004
Timeline?• Prototype definition end of 2003• Prototype design/construction first half 2004• Prototype tests second half 2004
Possibilities:
• Lab single straw tests• WASA based prototype using existing material and installations • Self-supporting prototype based on Jülich construction• Cosmics tests• MIP tests (GSI, PSI)
Tracking subgroup meeting:
Sunday, 7-September 8:30 Room 4.140
Tracking subgroup meeting:
Sunday, 7-September 8:30 Room 4.140
Agenda:
1. Central tracking• STT vs. TPC• Simulations• STT prototype definition• Timeline
2. Forward tracking• Prototype plans• Timeline
3. Funding applications
Agenda:
1. Central tracking• STT vs. TPC• Simulations• STT prototype definition• Timeline
2. Forward tracking• Prototype plans• Timeline
3. Funding applications