César Domingo Pardo GSI Helmholtzzentrum für Schwerionenforschung GmbH - PowerPoint PPT Presentation

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César Domingo Pardo GSI Helmholtzzentrum für Schwerionenforschung GmbH

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  1. Status of AGATA@GSI and Expected Performance César Domingo Pardo GSI Helmholtzzentrum für Schwerionenforschung GmbH AGATA ISTANBUL WORKSHOP 5.5.2010

  2. Outline • Summary of the Meeting on AGATA@GSI setup (30.4.2010) • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  3. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): RIB beam

  4. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): Chamber RIB beam Sec. Target + DSSD + Plastic TOF Start

  5. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): Chamber RIB beam Liquid Hydrogen Target

  6. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): Chamber RIB beam Plunger + DSSD + Plastic TOF Start

  7. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): Chamber RIB beam Sec. Target + DSSD + Plastic TOF Start

  8. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): Chamber RIB beam LYCCA Products Sec. Target + DSSD + Plastic TOF Start

  9. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): AGATA Chamber RIB beam LYCCA Products Sec. Target + DSSD + Plastic TOF Start

  10. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): AGATA Chamber RIB beam LYCCA Products +/- 15 cm Sec. Target + DSSD + Plastic TOF Start

  11. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): HECTOR AGATA Chamber RIB beam LYCCA Products Sec. Target + DSSD + Plastic TOF Start

  12. Summary on the AGATA@GSI Meeting on set-up, detectors and mechanics, 30.4.2010 Set-up at the FRS final focal plane (S4): HECTOR AGATA Chamber RIB beam LYCCA Products Sec. Target + DSSD + Plastic TOF Start

  13. AGATA S2' = 10 ATC + 5 Double Cluster Detectors Geometry cases • S2 + 5 Double Cluster detectors closing part of the central hole (15-16cm?). Remains shell with 5 crystals hole + pentagon hole AGATA S2' Geometry AGATA S2 Geometry = + 10 triple Cluster + 5double Cluster

  14. AGATA S2' = 10 ATC + 5 Double Cluster Detectors Geometry cases • S2 + 5 Double Cluster detectors closing part of the central hole (15-16cm?). Remains shell with 5 crystals hole + pentagon hole Beam pipe diameter = 9 - 12 cm

  15. AGATA S2' = 10 ATC + 5 Double Cluster Detectors beam

  16. AGATA S2' = 10 ATC + 5 Double Cluster Detectors beam Blue crystals are at diameter = 17 cm Room for a chamber 46cm diameter

  17. AGATA S2' = 10 ATC + 5 Double Cluster Detectors • S2’ Geometry + Spherical Chamber 46 cm

  18. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  19. Performance comparison: general aspects • Systematic study of efficiency and resolution vs. distance for all geometries • “Reference physics case”: (GEANT4 AGATA code from E.Farnea et al.) Eg,o = 1 MeV, recoil nucleus at b = 0.43 (E = 100 MeV/u), Mg = 1 Systematic study several distances sec. target – detector Detector Target Beam distance distance GSI FRS Spatial Beam Profile FWHMx = 6 cm FWHMy = 4 cm Active target DSSSD

  20. S-Geometries Performance comparison: Efficiency S1 S1 S2’ S3 S2’ S3’ S2 S2 S3’ S1 S3 S2’ S3 S3’ S2

  21. S-Geometries Performance comparison: Resolution S1 S1 S3 S3’ S2’ S2 S2’ S2 r = 5 mm (fwhm) S3’ S1 S3 S3’ S3 S2 S2’ r = 2 mm (fwhm)

  22. Shell Geometries performance comparison: Summary S1 r = 5 mm S2’ S2 -Eff. (%) -Sensitivity (Rising Units) S3’ -Eff. (%) FWHM (keV) r = 2 mm S3

  23. AGATA S2' Performance Summary Geometry cases • S2 + 5 Double Cluster detectors closing part of the central hole (15-16cm?). Remains shell with 5 crystals hole + pentagon hole Beam pipe diameter = 12 cm g-EFFICIENCY gg-EFFICIENCY RESOLUTION

  24. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  25. AGATA S2' @ GSI: angular dependence of the efficiency

  26. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  27. AGATA S2' @ GSI: relativistic dependence of the efficiency b = 0.43 b = 0

  28. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  29. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters S2’ Configuration = 10 ATC + 5 ADC ATC (Agata Triple Cluster) ADC (Agata Double Cluster)

  30. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters S2’ Configuration = 10 ATC + 5 ADC ATC (Agata Triple Cluster) ADC (Agata Double Cluster)

  31. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters S2’ Configuration = 10 ATC + 5 ADC ATC (Agata Triple Cluster) ADC (Agata Double Cluster)

  32. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters S2’ Configuration = 10 ATC + 5 ADC ATC (Agata Triple Cluster) ADC (Agata Double Cluster)

  33. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters S2’ Configuration = 10 ATC + 5 ADC ATC (Agata Triple Cluster) ADC (Agata Double Cluster)

  34. AGATA S2' @ GSI: efficiency vs. # triple (double) clusters Dependence of the efficiency on the number of triple (double) clusters • In the "high-efficiency" configuration (d=8.5cm) one losses 2% for each Double Cluster missing, and 1% for each Triple Cluster missing. • In the "standard" configuration (d=23.5cm) one losses 1% for each Double or Triple Cluster missing.

  35. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  36. AGATA S2' @ GSI: efficiency for pure E2 transitions (full align.) Dependence of the efficiency on the g-ray multipolarity (Isotropic vs. pure E2) E2 Isotropic

  37. AGATA S2' @ GSI: efficiency for pure E2 transitions (full align.) Dependence of the efficiency on the g-ray multipolarity (Isotropic vs. pure E2) E2 Isotropic

  38. AGATA S2' @ GSI: efficiency for pure E2 transitions (full align.) Dependence of the efficiency on the g-ray multipolarity (pure E2) E2 Isotropic Isotropic

  39. AGATA S2' @ GSI: efficiency for pure E2 transitions (full align.) Dependence of the efficiency on the g-ray multipolarity (pure E2) E2 Isotropic pure E2 Isotropic

  40. AGATA S2' @ GSI: efficiency for pure E2 transitions (full align.) Dependence of the efficiency on the g-ray multipolarity (pure E2) E2 ? Isotropic pure E2 Isotropic

  41. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  42. MC Simulation of a reference fragmentation experiment Realistic MC Simulation of a fragmentation experiment • Event Reconstruction • Detectors resolution • Doppler-correction • Tracking • Event Builder • Detector AGATA response (list of hits) + Ancillaries • (by Enrico Farnea) • Primary Event Generator • fragmentation • (coulex) • (by Pieter Doornenbal)

  43. Fragmentation Experiment Benchmark: 54Ni -> 50Fe* 10+ 1581 keV 8+ 1627 keV 6+ 1308 keV 4+ 1087 keV 2+ 765 keV 0+ Realistic MC Simulation of a fragmentation experiment 50Fe 54Ni @ 150 MeV/u • Primary Event Generator • fragmentation • g-ray decay • (by Pieter Doornenbal) Be Target (700mg/cm2) 50Fe

  44. Fragmentation Experiment Benchmark: 54Ni -> 50Fe* Realistic MC Simulation of a fragmentation experiment 50Fe • Primary Event Generator • fragmentation • g-ray decay • (by Pieter Doornenbal) 54Ni @ 150 MeV/u Be Target (700mg/cm2) b before b after g-ray vertex spatial distribution

  45. Fragmentation Experiment Benchmark: 54Ni -> 50Fe* • Event Builder • Detector (AGATA) response (list of hits) • (by Enrico Farnea) Realistic MC Simulation of a fragmentation experiment Be Target (700mg/cm2) GAMMA 1 1000.0000 RECOIL 0.5000 0.0000 0.0000 0.0000 1.0000 0.0000 SOURCE 0 0 0.0000 0.0000 0.0000 $ -1 1401.723 -0.43045 0.48009 0.76434 0 29 73.617 -142.729 141.623 234.825 52 1.053 29 39.475 -143.302 150.765 245.890 52 1.129 29 148.895 -151.199 143.686 236.472 51 1.083 29 155.373 -151.207 143.675 236.479 51 1.083 29 251.516 -129.956 144.860 230.891 41 1.007 29 166.208 -129.833 144.792 230.981 41 1.008 29 163.364 -129.791 144.692 230.949 41 1.008 29 132.162 -129.764 144.711 230.911 41 1.008 29 86.873 -129.765 144.716 230.913 41 1.008 -1 1627.135 0.23197 -0.26644 0.93552 1 1 126.640 125.339 -75.549 240.008 34 1.154 1 334.250 120.598 -82.006 265.573 43 1.065 1 71.117 120.608 -81.984 265.633 43 1.065 1 160.091 120.600 -81.997 265.637 43 1.065 1 11.067 120.642 -81.972 265.678 43 1.065 1 45.200 120.643 -81.971 265.679 43 1.065 -1 1087.822 -0.71426 -0.56881 0.40778 2 -1 1257.962 -0.08354 0.77764 0.62313 3 24 129.869 -24.004 192.131 156.311 05 0.836 24 30.817 -34.318 197.026 157.088 15 0.874 . . . . .

  46. Fragmentation Experiment Benchmark: 54Ni -> 50Fe* • Event Reconstruction • Detectors resolution • Doppler-correction • Tracking 10+ 1581 keV 8+ 1627 keV 6+ 1308 keV 4+ 1087 keV 2+ 765 keV 0+ Realistic MC Simulation of a fragmentation experiment Raw Low Statistics Doppler Corr. Raw High Statistics Doppler Corr. 50Fe

  47. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  48. Another example: line shape analysis on first 2+ of 74Ni 2+ 1024 keV 0+ 74Ni Realistic MC Simulation of a fragmentation experiment: DSAM Analysis 74Ni 76Zn @ 150 MeV/u t = ? Fe Target (500mg/cm2) t = 0.5 to 1.5 ps Zoom

  49. Outline • AGATA Geometry for experiments at GSI FRS (PRESPEC) • Performance in terms of efficiency and resolution • Angular dependence of the g-ray efficiency for several distances • Relativistic dependence of the efficiency on b • Performance vs. number of double and/or triple cluster available • Efficiency performance for pure E2 transitions • MC Simulation of a Fragmentation experiment • MC Simulation of the line-shape for DSAM analysis • First steps towards implementation of background in the simulations • Outlook • Conclusion

  50. Realistic MC Simulation: Background Degrader Target