1 / 11

AGATA Introduction

AGATA Introduction. John Simpson Nuclear Physics Group. The 4  180 detector Configuration. Ge crystals size: length 90 mm diameter 80 mm. 180 hexagonal crystals 3 shapes 60 triple-clusters all equal Inner radius (Ge) 23.1 cm Amount of germanium 362 kg

britanney-guzman
Download Presentation

AGATA Introduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. AGATA Introduction John Simpson Nuclear Physics Group

  2. The 4 180 detector Configuration Ge crystals size: length 90 mm diameter 80 mm 180 hexagonal crystals 3 shapes 60 triple-clusters all equal Inner radius (Ge) 23.1 cm Amount of germanium 362 kg Solid angle coverage 82 % Singles rate ~50 kHz 6480 segments Efficiency: 43% (Mg=1) 28% (Mg=30) Peak/Total: 58% (Mg=1) 49% (Mg=30)

  3. AGATA Detectors Hexaconical Ge crystals 90 mm long 80 mm max diameter 36 segments Al encapsulation 0.6 mm spacing 0.8 mm thickness 37 vacuum feedthroughs 3 encapsulated crystals 111 preamplifiers with cold FET ~230 vacuum feedthroughs LN2 dewar, 3 litre, cooling power ~8 watts

  4. The First Step:The AGATA DemonstratorObjective of the final R&D phase 2003-2008 1 symmetric triple-cluster 5 asymmetric triple-clusters 36-fold segmented crystals 540 segments 555 digital-channels Eff. 3 – 8 % @ Mg = 1 Eff. 2 – 4 % @ Mg = 30 Full ACQwith on line PSA and g-ray tracking

  5. AGATA Prototypes • Symmetric detectors • 3 ordered, Italy, Germany • 3 delivered • Acceptance tests in Koln • 3 work very well First results very good: 36 outer contacts 0.9-1.1 keV at 60keV and 1.9-2.1 keV at 1.3 MeV Core 1.2 keV at 60 keV and 2.1 keV at 1.3 MeV Cross talk less than 10-3

  6. AGATA Prototypes First triple cryostat in Cologne Full scan of first Detector in Liverpool

  7. Segment level processing: energy, time Detector level processing: trigger, time, PSA Global level processing: event building, tracking, software trigger, data storage

  8. 5 Clusters 1p 3p 55 Clusters 4p Array The Phases of AGATA-180

More Related