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AGA: Arbeitsgruppe Physik und Abrüstung

AGA 4: The Nuclear Test Ban Treaty and its Verification

AGA 4.1: Hauptvortrag

Donnerstag, 30. März 2017, 16:15–17:15, S Aula

Scientific methods to analyse the CTBT International Monitoring System data with emphasis on the area or radionuclide analysis — •Martin Kalinowski — International Data Centre Division, CTBTO

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans nuclear explosions by everyone and everywhere in the atmosphere, underwater and underground. In preparation for entry into force of the Treaty, the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has been tasked to establish the International Monitoring System (IMS) to monitor the planet for signs of nuclear explosions. The IMS consists of 321 globally distributed monitoring stations that continuously provide in near real-time measurements of seismic, infrasound, hydroacoustic and radioactivity sensors. The five announced nuclear tests of the Democratic People*s Republic of Korea have all been detected and this demonstrates the effectiveness of the monitoring system. The CTBTO maintains close cooperation with the scientific community to constantly refine its methods and ensure that the verification regime operates at the cutting edge of scientific knowledge. This presentation describes the science and technology process and uses the area of radionuclide analysis as an example how processing and interpretation of IMS data is improved by research and methodology developments. Global efforts are undertaken to understand the radioxenon background in the atmosphere that results from civil sources, to characterize the observations at IMS noble gas systems and to screen them for possible indications of signals that may be caused by a nuclear explosion so as to optimize the detectability of nuclear tests.

Slides in English, presentation in German.