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Munich-Centre for Advanced Photonics A pixel detector system for laser-accelerated ion detection Sabine Reinhardt Fakultät für Physik, Ludwig-Maximilians-Universität.

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Presentation on theme: "Munich-Centre for Advanced Photonics A pixel detector system for laser-accelerated ion detection Sabine Reinhardt Fakultät für Physik, Ludwig-Maximilians-Universität."— Presentation transcript:

1 Munich-Centre for Advanced Photonics A pixel detector system for laser-accelerated ion detection Sabine Reinhardt Fakultät für Physik, Ludwig-Maximilians-Universität München, Germany Sabine Reinhardt Fakultät für Physik, Ludwig-Maximilians-Universität München, Germany

2 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Detection of laser-accelerated proton (ion) beams: Ultra-short ( 10 7 ions/cm 2 ) ion pulses EMP presence Mixed radiation background Large energy spread of ions

3 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics 10 8 particles / cm² = 1 particle / µm² A, N 1 / 4 A  1 / 4 N Pixel detector as online detector in Thomson spectrometer: real time measurement excellent spatial resolution good energy resolution

4 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Munich 14 MV Tandem accelerator

5 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Kappa DX-4 Kodak CCD sensor KAI 1020 7.4  m x 7.4  m pixel size 2  m depletion depth commercial system integrating detector

6 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Summary + Dynamic range: 1 - 10 6 p/cm 2 /pulse + Linear response + Radiation hardness (20 MeV, 10 7 p/cm 2 ): 1000 shots - Charge sharing effects - Small sensitive area

7 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Timepix Timepix (in collaboration with IAEP CTU Prague) Medipix collaboration (CERN) hybrid detector system 300  m Si-sensor 256 x 256 pixel (50 x 50  m 2 ) 3 different read-out modes: Medipix mode (counting) Timepix mode (time) TOT mode (energy) Single event Double event cluster = adjacent pixel above threshold

8 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics + Single particle response + Linear response + Good energy resolution 65 keV @ 5239 keV - Large charge sharing effects - Small sensitive area -- Saturation and non-linear effects 2.5. 10 5 p/cm 2 /pulse Summary

9 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Rad Eye detector system RadEye 1 sensor Si-photodiode array 48  m x 48  m pixel size 2  m depletion depth large sensitive area: 25 mm x 50 mm commercial system integrating detector

10 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Munich 14 MV Tandem accelerator continuous beam 15 MeV protons ~ 10 4 p/cm 2 /s Munich 14 MV Tandem accelerator continuous beam 15 MeV protons ~ 10 4 p/cm 2 /s No charge sharing effects observed Single and double hits can be distinguished Cluster distribution: Cluster pixel distribution: single hit double hit Single proton sensitivity

11 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Munich 14 MV Tandem accelerator pulsed beam 20 MeV protons 10 4 - 10 7 p/cm 2 /ns Munich 14 MV Tandem accelerator pulsed beam 20 MeV protons 10 4 - 10 7 p/cm 2 /ns cd ab Good agreement to continuous measurements

12 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Munich 14 MV Tandem accelerator continuous + pulsed beam 20 MeV protons <= 6. 10 10 p/cm 2 Munich 14 MV Tandem accelerator continuous + pulsed beam 20 MeV protons <= 6. 10 10 p/cm 2 Lifetime 90% residual dynamic range 3000 shots (20 MeV, 10 7 p/cm 2 ) Radiation hardness

13 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics MPQ Atlas laser 2.5 J, 30 fs, focal spot 3  m (FWHM) 5-10 nm DLC foils wide angle spectrometer  dipole set 2 x 0.5 T  entrance slit 0.3 x 140 mm 2 E proton > 1 MeV MPQ Atlas laser 2.5 J, 30 fs, focal spot 3  m (FWHM) 5-10 nm DLC foils wide angle spectrometer  dipole set 2 x 0.5 T  entrance slit 0.3 x 140 mm 2 E proton > 1 MeV RadEye- System DLC foil Entrance slit dipole set Al- foillaser

14 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Pixel value spectrum: Peak position Energy loss Peak content Average number of proton hits per pixel

15 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Sensor “C” Sensor “D”

16 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics

17 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics MPQ Atlas laser 400 mJ, 30 fs 20-40 nm DLC foils small angle spectrometer  only dipole 0.5 T  pinhole   2.5 mm E proton > 4 MeV MPQ Atlas laser 400 mJ, 30 fs 20-40 nm DLC foils small angle spectrometer  only dipole 0.5 T  pinhole   2.5 mm E proton > 4 MeV

18 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Compact integrated system “RE4PC”  Stand alone system  computer control and read-out electronics  Compact size: 30 x 25 x 25 cm 3  Parallel read-out of 4 RadEye detectors

19 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Astra Gemini laser 4-6 J, 50 fs focal spot: 3  m (FWHM) target: 75 nm plastic foil p > 3.7 MeV C > 20 MeV Astra Gemini laser 4-6 J, 50 fs focal spot: 3  m (FWHM) target: 75 nm plastic foil p > 3.7 MeV C > 20 MeV p ?? 6+ C

20 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Conclusion

21 Instrumentation for Diagnostics and Control of Laser-Accelerated Proton (Ion) Beams: 2 nd Workshop, Paris, France07.-08.06.2012 Munich-Centre for Advanced Photonics Many thanks to Wolfgang Draxinger, and Walter Assmann Klaus Allinger, Jianhui Bin, Wenjun Ma and Jörg Schreiber Carlos Granja and Frantisek Krejci


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