1. Three years of operational experience from Schauinsland CTBT monitoring station
- Author
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M. Zähringer, Clemens Schlosser, and J. Bieringer
- Subjects
Spectrum analyzer ,Time Factors ,Health, Toxicology and Mutagenesis ,International Cooperation ,Nuclear physics ,Lanthanum ,Radiation Monitoring ,Germany ,Calibration ,Comprehensive Nuclear-Test-Ban Treaty ,Environmental Chemistry ,Waste Management and Disposal ,Remote sensing ,Nuclear Warfare ,Radioisotopes ,Measure (data warehouse) ,Air ,Detector ,Monitoring system ,General Medicine ,Lead Radioisotopes ,Pollution ,Air Pollutants, Radioactive ,Research Design ,Fully automatic ,Environmental science ,Test phase ,Beryllium ,Environmental Monitoring - Abstract
Data from three years of operation of a low-level aerosol sampler and analyzer (RASA) at Schauinsland monitoring station are reported. The system is part of the International Monitoring System (IMS) for verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). The fully automatic system is capable to measure aerosol borne gamma emitters with high sensitivity and routinely quantifies 7Be and 212Pb. The system had a high level of data availability of 90% within the reporting period. A daily screening process rendered 66 tentative identifications of verification relevant radionuclides since the system entered IMS operation in February 2004. Two of these were real events and associated to a plausible source. The remaining 64 cases can consistently be explained by detector background and statistical phenomena. Inter-comparison with data from a weekly sampler operated at the same station shows instabilities of the calibration during the test phase and a good agreement since certification of the system.
- Published
- 2007