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LYCCA: Lund - York - Cologne - CAlorimeter Status report L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group.

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Presentation on theme: "LYCCA: Lund - York - Cologne - CAlorimeter Status report L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group."— Presentation transcript:

1 LYCCA: Lund - York - Cologne - CAlorimeter Status report L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group

2 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group RISING Fast Beam Campaign CATE + CLUSTERS RISING Fast Beam Campaign 2009 LYCCA-0 + CLUSTERS RISING Fast Beam Campaign 2011 LYCCA-1 + AGATA Demonstrator FAIR 2013 LYCCA + AGATA

3 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Core device for: RISING HISPEC/DESPEC Objective is to uniquely identify event-by-event exotic nuclei by: mass A charge Z Flexible array of detector modules to measure: E ∆E Position ToF Tracking the reaction products at the secondary target position

4 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group 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

5 Timing wall options; stop ToF: 1.CVD diamond 20  20 mm 2.Ultra fast plastic:  10 mm strips 3.DSSSD signal from one side Target position: 1.Position: DSSSD 2.Start ToF: CVD Diamond 3.LYCCA-lcp array Pavel Golubev, Lund UniversityN

6 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Pavel Golubev, Lund University Detector construction  E-E modules  E - detector DSSSD, 58  58 mm 2, 310 um, 32 strips on each side PCB frame, ~ no dead space, wire bonding, connectors PD readout PD, 10.5  11.5 mm 2, mounted on frame PCB, signal transport E - detector CsI, 19  19 mm 2, 13 or 33 mm + 7 mm pyramid lightguide Teflon wrapping, 3  3 modules per one DSSSD 58.0 mm 62.5 mm

7 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group LYCCA-0 CATE-CsI LYCCA-CsI ”Si timing” ”CVD timing” ”Scint timing”

8 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Detector lab tests 1. CsI + PD 2. DSSSD 300 µm 60×60 mm RADCON Ltd 3 layers of teflon (0.25 mm) PD 10.5×11.5 mm 2 low C det  R % RADCON Ltd 60.0 × 60.0 mm 2, 32 ×32, 303  m C tot = 1060 pf, nA per strip

9 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Detector in-beam tests June 2007 LYCCA/R3B calorimeter GWC, TSL, Uppsala: Energy ±0.80 MeV protons. Flux reduced to 900 s -1. LYCCA DSSSD R% = 180 MeV p LYCCA PD

10 Detector LU & DAQ L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group 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.V channel FADC 14 bit 100 MS/s PD preamp signal

11 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Detector mounting Semi-clean room for detector mounting LYCCA DSSSD 60.0 × 60.0 mm 2, 32 ×32, 303  m LYCCA single telescope module mounting jig  wire bonding

12 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group

13 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group

14 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group Detectors & electronics 3 Options: CVD, F Plastic, Si Important boundary condition: January 2009 LYCCA-0 should be ready for RISING Fast Beam Campaign!

15 L U N D U N I V E R S I T YU N I V E R S I T Y Nuclear Structure Group 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 chamber 3.LYCCA-0 target chamber + feedthroughs 4.Shielding of Ge-detectors from background from LYCCA-0

16 Simulation of LYCCA0: GEANT4 & ROOT At secondary target position: X mg/cm  m DSSSD  m CDV X  0.7 g/cm 2, d  2 m What 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 YU N I V E R S I T Y L U N D Mike Taylor, York University + Lund University + PhD student, GSI

17 LYCCA Simulation Update New Lycca0 geometry implemented (geometry code courtesy of Lund) TOF timing started by Diamond detector at the target position, stopped by Si detectors

18 Titanium Gated TOF vs Energy A σ (mb) 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

19 New FRS Detector Signals New version now contains all of the signals from the FRS tracking detectors as well as particle properties immediately before the secondary target

20 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 data Si detector (x,y) position spectra a) For all good Si & CsI events b) same as a) but now with a gate on SC41 left side (x > -100 & x < 0) A small correlation is evident from the resulting spectra

21 U N I V E R S I T YU 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, 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)


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