Bremen 2017 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 5: Postersitzung I
EP 5.4: Poster
Dienstag, 14. März 2017, 16:30–18:00, GW2 2.OG
The not so standard Neutron Monitor: An initiative for standardization — •Christian Steigies1 and Christos Sarlanis2 — 1Christian-Albrechts-Universität zu Kiel — 2ISNet Co, Athens, Greece
Neutron Monitors (NM) are standardized ground-based cosmic ray detectors. The IGY type has been in use since the International Geophysical Year 1957. In 1964 it has been succeeded by the NM64, which provides better count-rate statistics. Although most stations of the worldwide Neutron Monitor network are of the NM64 type, some IGY NMs are still in use today. Since the beginning NMs deliver hourly count-rates to the World Data Center for Cosmic Rays (WDC-C) in a standardized format. With the creation of NMDB.eu also a standard data format for high-resolution measurements is in place. However, the data processing of NMs, that is determination of count-rates of the whole monitor (which consists of typically 18 individual counter tubes), is not standardized. Single tubes may produce errors (spikes, dropouts, drifts, snow or wind effect) which deteriorate the high-precision measurement if this data is not properly corrected. Different NM stations experience different kinds of problems, so each station has developed their own algorithms to correct data, ie a simple sum algorithm, different median editors, or the so called super editor. In a world where we are trying to standardize NM data from the detection system all the way to the database, data correction should be standardized as well. Thus we are working on a software package which will be used to study and compare the different algorithms using actual data provided by different NM stations.