Meeting on the Next Generation <sup>76</sup>Ge Experiment

Europe/Berlin
Description

The search for neutrinoless double beta decay has the potential to discover lepton number violation and to determine the nature of neutrinos. Correspondingly, large, ton-scale next-generation experiments have been identified as a high priority by the nuclear and particle physics communities. The isotope 76Ge has historically been an important isotope in terms of excellent sensitivity, resolution, and background. The ongoing 76Ge-based experiments GERDA Phase II and the MAJORANA DEMONSTRATOR aim to achieve the lowest background to date of experiments currently operating or under construction.

Members of MAJORANA and GERDA would like to move forward with planning for a new, next-generation double-beta decay experiment based on 76Ge-enriched high purity germanium detectors. We intend to combine the best technologies from our two efforts along with additional R&D studies to optimize the design. The purpose of this meeting is to discuss this future new project.

The meeting will be held in Munich, Germany. At IBZ (close to Odeons Platz):

http://www.ibz-muenchen.de/index.php/en/

Below is a list with links of hotels which are well connected to the venue. People should book directly. We have not blocked rooms.

A modest registration fee will be collected to cover coffee breaks, etc., and will be collected in cash at the start of the meeting. There will also be a meeting dinner on Tuesday evening for attendees and their guests.

Participants
    • Organizers Pre-meeting
      • 1
        Organizers premeeting
      • 10:00
        Coffee Break
      • 2
        Organizers premeeting
    • 12:00
      Lunch
    • General Considerations
      • 3
        Welcome/GERDA-MJD history and this meeting
        Speaker: Stefan Schoenert
        Slides
      • 4
        BB and nuclear theory
        Speaker: Achim Schwenk
        Slides
      • 5
        BB and particle theory
        Speaker: Martin Hirsch
        Slides
      • 6
        Neutrinos in cosmology
        Speaker: Alejandro Ibarra
        Slides
      • 7
        Non-Ge experimental programs
        Speaker: Laura Baudis
        Slides
      • 15:15
        Coffee break
      • 8
        GERDA concept, design, status
        Speaker: Konstantin Gusev
        Slides
      • 9
        MJD concept, design, status
        Speaker: Vince Guiseppe
        Slides
      • 10
        Bringing the theory to Ge76, strengths and weaknesses of Ge, how large does an experiment need to be. Contrast with other isotopes and experimental techniques
        Speaker: Jason Detwiler (CENPA)
        Slides
      • 17:45
        Adjourn
    • Community Guidance
      • 11
        Advantages of Ge detectors for bb and future improvements
        Speaker: David Radford
        Slides
      • 12
        CDEX overview
        Speaker: Qian Yue
        Slides
      • 13
        NSAC Report and CD process in US
        Speaker: John Wilkerson
        Slides
      • 14
        European Context (something similar to NSAC report, ApPEC maybe)
        Speaker: Thomas Berghoefer
        Slides
      • 10:10
        Coffee Break
      • 15
        Other physics with Ge detectors
        Speaker: Matthew Green
        Slides
      • 16
        Sino-German Cooperation
        Speaker: Iris Abt
        Slides
      • 17
        Status of UG labs
        Speaker: Stefano Ragazzi
        Slides
    • 11:50
      Lunch
    • Enrichement, purification & crystal growth
      • 18
        Indroduction
        Speaker: Allan Caldwell
        Slides
      • 19
        Status of Ge-76 production and purification in Russia
        Speaker: V. Kornoukhov
        Slides
      • 20
        Purification and Crystal growth at IKZ
        Speaker: W. Miller
        Slides
      • 21
        Ge crystal pulling, Ge processing and recycling of enriched material in the US
        Speaker: Cabot-Ann Christofferson
        Slides
      • 22
        Enrichment, crystal growth and detector fabrication in China
        Speaker: Y. Li
        Slides
    • Possible Configurations
      • 23
        Futre LAr light detectioon
        Speaker: Jozsef Janicsko
        Slides
      • 24
        Future developments in cabling
        Speaker: Stefan Schoenert
        Slides
      • 25
        Depth requirement and shield design
        Speaker: Ralph Massarczyk
        Slides
      • 15:50
        Coffee Break
      • 26
        Future developments in electronics
        Speaker: Alan Poon
        Slides
      • 27
        200 kg concepts
        Speaker: Bernhard Schwingenheuer
        Slides
      • 28
        Tonne scale concepts
        Speaker: Prof. John Wilkerson (UNC)
        Slides
      • 29
        High-level WBS indicating key R&D itmes and next steps
        Speaker: Bela Majorovits
        Slides
      • 18:20
        Adjourn
    • Group Résumés

      Each attending group will be invited to give a 15-20 minute talk on their people, history and activities.

      • 30
        Available facilities, an overview of screening facilities (Ge, ICPMS, NAA, Rn emanation…)
        Speaker: Matthias Laubenstein
        Slides
      • 31
        Individual group presentations on their capabilities. ~3 min each
        Slides
      • 10:00
        Coffee Break
      • 32
        Individual group presentations on their capabilities. ~3 min each
        Slides
    • 12:00
      Lunch
    • Résumés and Future Planning
      • 33
        Individual group presentations on their capabilities. ~3 min each
      • 14:30
        Coffee Break
      • 34
        Next steps, collaboration formation, discuss process toward a first WBS and responsibility assignment, governance issues.
        Speakers: Bernhard Schwingenheuer, Dr Steve Elliott (Los Alamos)
        Slides