Vienna International School Choir

Executive Secretary Lassina Zerbo
opened the conference

f.l.: Lassina Zerbo, Ahmet Üzümzü, Frank Klotz and Robin Grimes

f.l.: IAEA Director General Yukiya Amano and
Executive Secretary Lassina Zerbo

f.l.: Executive Secretary Lassina Zerbo and South African Minister for Science and TechnologyNaledi Pandor

f.l.: Ahmet Üzümcü, Wolfgang Hoffmann, Lassina Zerbo, Naledi Pandor

f.l.: Des Browne, Alexander Kmentt, Michael Linhart, Lassina Zerbo

Randy Bell and Nadja Bernard

Message by UN Secretary-General Ban Ki-moon

Keynote speech by South African Minister for Science and Technology Naledi Pandor

Keynote speech by OPCW Director-General Ahmet Üzümcü

Keynote speech by Des Browne, Former Defence Secretary, UK, and Vice-Chairman of the Nuclear Threat Initiative


The CTBT: Science and Technology 2015 Conference (SnT2015) took place from 22 to 26 June 2015 at the Hofburg Palace in Vienna, Austria. It was the fifth in a series of multidisciplinary conferences designed to further enhance the strong relationship between the scientific and technological community and the CTBTO. See website story on the opening day and summary.
The conference series provides a forum for scientists from around the world to exchange knowledge and share advances in monitoring and verification technologies of relevance to the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Such interaction helps ensure that the Treaty’s global verification regime remains at the forefront of scientific and technical innovation. 

With nearly 1110 registered participants and over 550 abstracts, SnT2015 is the largest such conference to date.





Conference Photos (see all images)




Young Scientist award: Sophie Guillon

for: Variability in Subsurface Gas Transport in the Light of Field Experiments and Numerical Modelling

Best poster: Gilbert Le Petit
(collected by Thierry Héritier)

for: High Resolution Electron Photon Detection System: A Major Breakthrough for Fission Product Analysis

Best oral presentation: Walter Dekin

for: Understanding the Challenges of On Site Inspection Drilling to Safely Recover Relevant Radiological Samples from an Underground Nuclear Explosion

EU Star Award: Munkhsaikhan Adiya

for: Seismic Swarm near the Capital of Mongolia Investigated Using Double Difference Tomography

Academic Forum

The 2015 CTBT Academic Forum was a results-oriented, interactive event for academics already engaged in, or interested in, CTBT education aiming to identify ways to integrate Treaty-related topics into existing policy or science-based academic curricula and to develop educational resources to further this objective. The Academic Forum was held on Friday June 26. See forum agenda (PDF).


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Additional Information & Contact

For specific inquiries or information on the conference not available on these web pages, please contact

Conference Goals

  • Enlarge the scientific community engaged in test-ban monitoring
  • Promote the wider scientific application of data that are used for test-ban verification
  • Enhance the exchange of knowledge and ideas between the CTBTO and the broader scientific community


Oral presentation are available here (PDF)

Scientific Poster are available here (PDF or JPG)


Browse the video archive of each session





See media advisory (10 June) for media opportunities at the conference and logistics. For spin-off uses of CTBTO data, see press release "Nothing Escapes The Global Ear: Nuclear Tests, Volcanoes, Earthquakes or Meteors" (17 June). For additional information, please contact or tel. +43 1 26030 6457.