LYCCA : L und - Y ork - C ologne - CA lorimeter

1. L U N D UNIVERSITY Nuclear Structure Group LYCCA: Lund - York - Cologne - CAlorimeter Status report

2. L U N D UNIVERSITY Nuclear Structure Group • 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

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

6. L U N D UNIVERSITY • E - detector • DSSSD, 58  58 mm2, 310 um, 32 strips on each side • PCB frame, ~ no dead space, wire bonding, connectors • E - detector • CsI, 19  19 mm2, 13 or 33 mm + 7 mm pyramid lightguide • Teflon wrapping, 3  3 modules per one DSSSD • PD readout • PD, 10.5  11.5 mm2, mounted on frame • PCB, signal transport Nuclear Structure Group Pavel Golubev, Lund University Detector construction E-E modules 62.5 mm 58.0 mm 62.5 mm

7. L U N D UNIVERSITY Nuclear Structure Group LYCCA-0 ”Scint timing” CATE-CsI ”CVD timing” LYCCA-CsI ”Si timing” CATE-CsI

8. L U N D UNIVERSITY Nuclear Structure Group Detector lab tests 1. CsI + PD • RADCON Ltd • 3 layers of teflon (0.25 mm) • PD 10.5×11.5 mm2 • low Cdet R % 2. DSSSD 300 µm 60×60 mm • RADCON Ltd • 60.0 × 60.0 mm2, 32 ×32, 303 m • Ctot = 1060 pf, 10-15 nA per strip

9. L U N D UNIVERSITY Nuclear Structure Group Detector in-beam tests June 2007 LYCCA/R3B calorimeter GWC, TSL, Uppsala: Energy 179.31±0.80 MeV protons. Flux reducedto 900 s-1. LYCCA DSSSD LYCCA PD R% = 0.5%@ 180 MeV p

10. L U N D UNIVERSITY Nuclear Structure Group Detector Lab@ LU & DAQ • 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 • Semi-clean room for • detector mounting

11. L U N D UNIVERSITY Nuclear Structure Group Detector mounting LYCCA single telescope module mounting jig  wire bonding LYCCA DSSSD 60.0 × 60.0 mm2, 32 ×32, 303m Semi-clean room for detector mounting

12. L U N D UNIVERSITY Nuclear Structure Group

13. L U N D UNIVERSITY Nuclear Structure Group

14. Important boundary condition: January 2009 LYCCA-0 should be ready for RISING Fast Beam Campaign! L U N D UNIVERSITY 3 Options: CVD, F Plastic, Si Nuclear Structure Group Detectors & electronics

15. L U N D UNIVERSITY Nuclear Structure Group Mechanics • Mechanical parts produced at University of Cologne and GSI: • Permanent or movable mechanics to hold two (active) tracking detectors (DSSSD & CVD) + vacuum feedthroughs • Extension, 1 m, of vacuum line to new LYCCA-0 chamber • LYCCA-0 target chamber + feedthroughs • Shielding of Ge-detectors from background from LYCCA-0

16. L U N D UNIVERSITY Simulation of LYCCA0: GEANT4 & ROOT Mike Taylor, York University + Lund University + PhD student, GSI • MOCADI as an Event Generator At secondary target position: X mg/cm2 + 310 m DSSSD + 300 m CDV X  0.7 g/cm2 , d  2 m What is the optimal X, d, t to get the best mass resolution? • 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

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 • 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. Analysis with simulated data 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 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. UNIVERSITY 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)