Topolgical data analysis for AGATA

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Presentation transcript:

Topolgical data analysis for AGATA Laura Harkness-Brennan (Physics) and Vitaliy Kurlin (Computer Science)

Supervisory Team Laura Harkness-Brennan (50%) Department of Physics Lecturer - Nuclear Physics Group Coordinator of PSA team for AGATA collaboration Expertise in radiation detectors and gamma-ray spectroscopy Vitaliy Kurlin (50%) Computer Science and MIF Joined Liverpool in 2016 Senior Lecturer – Computer Science and Materials Innovation Factory Research: Tomological data analysis for materials science, computer vision, climate Programming skills: C/C++, Java, Matlab, Python, etc

Dr Vitaliy Kurlin

Fraser Holloway BSc Physics with Nuclear Science University of Liverpool 1st Class honours Awarded Hudson Year 3 Prize Currently on a summer placement at Harwell working with Canberra-Mirion Enjoys nuclear physics, computing and python programming Would like to continue in nuclear physics after the PhD, probably working in industry

Background Advanced Gamma Tracking Array (AGATA) is a spectrometer used to probe fundamental properties of atomic nuclei Over 350 scientists across over 40 research institutes Detects gamma-rays emitted when nuclei are excited into a higher energy state by a collision, using radioactive and stable ion beams at facilities across Europe Full array: there will be 180 large volume 36-fold segmented Ge crystals in 60 triple-clusters

? Gamma-ray resolving Power Year 108 106 104 102 100 1900 1925 1950 1975 2000 2025 108 106 104 102 100 Gammasphere, Euroball Compton Suppression & HPGe Small Arrays Ge(Li) NaI Geiger-Muller Discovery of Radioactivity Ge Shell & Tracking ? How does nuclear shell structure evolve in exotic neutron-rich nuclei? How do collectivity and pairing correlations change in neutron-rich nuclei? What is the structure of the heaviest nuclear systems? What are the limits of the high-spin domain? Gamma-ray resolving Power Year

Analysis of data offline AGATA array: 6840 channels, continuously digitised by sampling 14-bit ADCs at 100MHz Pre-processing in FEE’s, 600ns data packets sent to PC farms that run PSA algorithms with data rates 370MB/s PSA used to determine gamma-ray interaction positions, fed into the tracking algorithms and sent to a grid centre Analysis of data offline AGATA Data

Milestones Identification of potential toplogical analysis methods for project Implementation and testing of methods Application of techniques to source and in-beam data Performance and impact evaluation

Placement Opportunities STFC Darsbury: (skills training), Monte-Carlo techniques IN2P3, France: Analysis of in-beam data for AGATA (LTA placement) GANIL, France: processing large experimental data sets and participation in AGATA experiments, to gain an appreciation of real-time data processing challenges (LTA placement)