lycca : l und - y ork - c ologne - ca lorimeter
DESCRIPTION
L U N D. U N I V E R S I T Y. Nuclear Structure Group. LYCCA : L und - Y ork - C ologne - CA lorimeter. Status report. L U N D. U N I V E R S I T Y. Nuclear Structure Group. RISING Fast Beam Campaign 2003-2005 CATE + CLUSTERS RISING Fast Beam Campaign 2009 - PowerPoint PPT PresentationTRANSCRIPT
LYCCA: Lund - York - Cologne - CAlorimeter
Status reportL U N DU N I V E R S I T Y
Nuclear StructureGroup
L U N DU N I V E R S I T Y
Nuclear StructureGroup
• RISING Fast Beam Campaign 2003-2005 CATE + CLUSTERS
• RISING Fast Beam Campaign 2009 LYCCA-0 + CLUSTERS
• RISING Fast Beam Campaign 2011 LYCCA-1 + AGATA Demonstrator
• HISPEC/DESPEC @ FAIR 2013 LYCCA + AGATA
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Core device for:
• RISING• HISPEC/DESPEC
Objective is to uniquely identifyevent-by-event exotic nuclei by:
• mass A • charge Z
Flexible array of detectormodules to measure:
• E• ∆E• Position• ToF
• Tracking the reaction products at the secondary target position
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Basic Requirements
Physical segmentation for E and E
Energy resolution E/E 1%
Dynamic range:
from mass A=20 up to mass A=200
from energy ~200 MeV/u down to ~100 MeV/u
Achieved with:
DSSSD & CsI modules
Time resolution better than t 100 ps with ToF
Achieved with:
Si, Diamond, or Fast Plastic detectors
Timing wall options; stop ToF:1. CVD diamond 20 20 mm2. Ultra fast plastic: 10 mm strips3. DSSSD signal from one side
Target position:1. Position: DSSSD2. Start ToF: CVD Diamond3. LYCCA-lcp array
Pavel Golubev, Lund UniversityN
L U N DU N I V E R S I T Y
Nuclear StructureGroup Pavel Golubev, Lund University
Detector constructionE-E modules
E - detector• DSSSD, 58 58 mm2, 310 um, 32 strips on each side• PCB frame, ~ no dead space, wire bonding, connectors
PD readout• PD, 10.5 11.5 mm2, mounted on frame• PCB, signal transport
E - detector• CsI, 19 19 mm2, 13 or 33 mm + 7 mm pyramid lightguide• Teflon wrapping, 3 3 modules per one DSSSD
58.0
mm62
.5 m
m62
.5 m
m
L U N DU N I V E R S I T Y
Nuclear StructureGroup
LYCCA-0
CATE-CsI
CATE-CsI
LYCCA-CsI ”Si timing”
”CVD timing”
”Scint timing”
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Detector lab tests1. CsI + PD
2. DSSSD 300 µm 60×60 mm
• RADCON Ltd• 3 layers of teflon (0.25 mm)• PD 10.5×11.5 mm2
low Cdet R %
•RADCON Ltd• 60.0 × 60.0 mm2, 32 ×32, 303 m• Ctot = 1060 pf, 10-15 nA per strip
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Detector in-beam tests June 2007LYCCA/R3B calorimeter
GWC, TSL, Uppsala:
Energy 179.31±0.80 MeV protons.
Flux reduced to 900 s-1.
LYCCA DSSSD
R% = 0.5%@ 180 MeV p
LYCCA PD
Detector Lab@ LU & DAQ
L U N DU N I V E R S I T Y
Nuclear StructureGroup
• Semi-clean room for detector mounting
• Vacuum chamber Source detector test • Semi-clean room Detector mounting DSSSD bonding• VME, CAMAC, MIN electronic pool New arrival: CAEN Mod.V1724
• 8 channel FADC• 14 bit 100 MS/s• PD preamp signal
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Detector mounting
Semi-clean room for detector mounting
LYCCA DSSSD 60.0 × 60.0 mm2, 32 ×32, 303m
LYCCA single telescope module
mounting jig wire bonding
L U N DU N I V E R S I T Y
Nuclear StructureGroup
L U N DU N I V E R S I T Y
Nuclear StructureGroup
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Detectors & electronics
3 Options:CVD, F Plastic, Si
Important boundarycondition:
January 2009LYCCA-0 should
be ready for RISINGFast Beam Campaign!
L U N DU N I V E R S I T Y
Nuclear StructureGroup
Mechanics
Mechanical parts produced at University of Cologne and GSI:
1. Permanent or movable mechanics to hold two (active) tracking detectors (DSSSD & CVD) + vacuum feedthroughs
2. Extension, 1 m, of vacuum line to new LYCCA-0 chamber3. LYCCA-0 target chamber + feedthroughs4. Shielding of Ge-detectors from background from LYCCA-0
Simulation of LYCCA0: GEANT4 & ROOT
At secondary target position:X mg/cm2
+ 310 m DSSSD+ 300 m CDVX 0.7 g/cm2 , d 2 mWhat is the optimal X, d, t to get the best mass resolution?
• MOCADI as an Event Generator
• Fix ToF distance to investigate detector resolution effects• Simulate with SFRS beam profile• Simulate test experiments with final setup for Coulex, Frag., Transfer• Simulation of full HISPEC
U N I V E R S I T YL U N D
Mike Taylor, York University+ Lund University+ PhD student, GSI
LYCCA Simulation UpdateLYCCA Simulation Update
New Lycca0 geometry implemented(geometry code courtesy of Lund)
TOF timing started by Diamond detector at thetarget position, stopped by Si detectors
Titanium Gated TOF vs EnergyTitanium Gated TOF vs EnergyAA σσ (mb) (mb)42 0.0550
43 0.7896
44 5.3086
45 15.926
46 19.819
47 9.906
48 2.7932
49 0.4612
• At 2m the mass separation is better than the Co case but still a little dirty
• At 3m the separation is approaching an ideal case
New FRS Detector SignalsNew FRS Detector Signals
New version now contains all of the signals from the FRS tracking detectorsas well as particle properties immediately before the secondary target
By including signals from the FRS detectors as one would have in a real experiment the simulation allows real data analysis techniques to be used to investigate the correlations between various detector signals
Analysis with simulated dataAnalysis with simulated data
Si detector (x,y) position spectraa) For all good Si & CsI eventsb) same as a) but now with a gate on SC41 left side (x > -100 & x < 0)
A small correlation is evident from theresulting spectra
U N I V E R S I T Y
Conclusions – LYCCA
(Some) Swedish Issues:• LYCCA led by Lund Nuclear Structure Group• LU synergies with R3B/EXL and Panda Calorimeter
developments and tests; joint existing detector lab and research engineers
• GSI-LU PhD student already associated to the project
General Issues:• Core device for HISPEC• ID reaction products by A and Z, 50-200 MeV/u via E(DSSSD),
E(CsI), t (CVD diamond, ultra fast scintillators, DSSSD)• Modular, flexible system to be used in different configurations
Technical Issues:• Bench and in beam detector components tests• Construction of prototype module• Simulation GEANT4 & ROOT• Development of FEE (T-preamps, E-preamps, … AIDA ASIC)