Upgrade of Apatity Neutron Monitor

24th European Cosmic Ray Symposium

Balabin, Yu.^1 ; Vashenyuk, E.^1 ; Gvozdevsky, B.^1 ; Germanenko, A.^1

Polar Geophysical Institute, Apatity, Russia^1

关键词: Count rates;    Electric noise;    High-time resolution;    Large dead time;    Neutron monitors;    Pulse amplitude;    Rapid data acquisition;    Software calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/632/1/012047/pdf
DOI  :  10.1088/1742-6596/632/1/012047

来源: IOP

【 摘 要 】

The neutron monitor (NM) in Apatity has been deeply upgraded in the end of 2013. We developed and installed new amplifier-discriminators. The detecting tubes of NM were tested and calibrated with additionally using of a pulse-amplitude analyzer. Due to this operation electric noise and interfering pulses are reduced. The NM was equipped with a new rapid data acquisition system. The system registers each NM pulse with time accuracy of 1 microsecond. This gives a possibility to investigate such fast phenomena as, for example, multiplicities in NM. Moreover, using these detailed data, it is possible to produce not only a standard NM count rate (number of pulses per minute) but (if necessary) a count rate with any high time resolution. Based on the detailed data we implemented the software calculation of so called "large dead time" data, which previously was done by hardware.