The Tien-Shan mountain cosmic ray station of the Ionosphere Institute of Kazakhstan Republic

Zusmanovich, A. G.; Kryakunova, O. N.; Shepetov, A. L.

doi:10.1016/j.asr.2008.11.030

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…The neutron detector system of the Tien Shan station. Historically, the system of neutron registration at Tien Shan has been developing around the 18NM64 type neutron supermonitor which was installed here many years ago, and for several decades has been participating in the world wide net of the cosmic ray intensity monitoring [71]. Tien Shan supermonitor consists of three 2×3m 2 standard units [72] situated compactly in one building.…”

Section: Neutron Detectors Of the Nuclear-active Cosmic Ray Componentmentioning

confidence: 99%

New complex EAS installation of the Tien Shan mountain cosmic ray station

Chubenko

Shepetov

Antonova

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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In this paper we present a description of the new complex installation for the study of extensive air showers which was created at the Tien Shan mountain cosmic ray station, as well as the results of the test measurements made there in 2014-2016. At present, the system for registration of electromagnetic shower component consists of ∼100 detector points built on the basis of plastic scintillator plates with the sensitive area of 0.25m 2 and 1m 2 , spread equidistantly over ∼10 4 m 2 space. The dynamic range of scintillation amplitude measurements is currently about (3 − 7) · 10 4 , and there is a prospect of it being extended up to ∼10 6 . The direction of shower arrival is defined by signal delays from a number of the scintillators placed cross-wise at the periphery of the detector system. For the investigation of nuclear active shower components there was created a multi-tier 55m 2 ionization-neutron calorimeter with a sum absorber thickness of ∼1000g/cm 2 , typical spatial resolution of the order of 10cm, and dynamic range of ionization measurement channel about ∼10 5 . Also, the use of saturation-free neutron detectors is anticipated for registration of the high-and lowenergy hadron components in the region of shower core. A complex of underground detectors is designed for the study of muonic and penetrative nuclear-active components of the shower.The full stack of data acquisition, detector calibration, and shower parameters restoration procedures are now completed, and the newly obtained shower size spectrum and lateral distribution of shower particles occur in agreement with conventional data. Future studies in the field of 10 14 − 10 17 eV cosmic ray physics to be held at the new shower installation are discussed.

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Section: Neutron Detectors Of the Nuclear-active Cosmic Ray Componentmentioning

confidence: 99%

New complex EAS installation of the Tien Shan mountain cosmic ray station

Chubenko

Shepetov

Antonova

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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“…There are two detector kinds for the neutron flux measurements at Tien Shan Mountain Station. The first is a NM64 type neutron supermonitor, such as described by Hatton and Tomlinson (1968); Hatton (1971), which operates here continuously during many decades Zusmanovich et al (2009). Generally, the neutron monitors of such type can be used for a high precision registration of the intensity of energetic ( 1 GeV) cosmic ray hadrons capable to generate a multitude of evaporation neutrons in nuclear interaction within the internal lead target of the monitor.…”

Section: Neutron Detectorsmentioning

confidence: 99%

The prolonged gamma ray enhancement and the short radiation burst events observed in thunderstorms at Tien Shan

Shepetov,

Antonova,

Kalikulov

et al. 2020

Preprint

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We report the observation results of the hard radiation flashes which accompanied the lightning discharges above the mountains of Northern Tien Shan. Time series of the counting rate intensity, numerical estimations of absolute flux, and energy distribution of accelerated electrons and of keV gamma rays were obtained at the height of 3700 m a. s. l., immediately within thunderclouds, and in closest vicinity ( 100 m) to discharge region. Two different kinds of radiation emission events are presented here: a relatively prolonged rise of gamma ray intensity with minute-scale duration (the thunderstorm ground enhancement, TGE) which has preceded a negative field variation, and a short sub-millisecond radiation burst, which accompanied a close lightning discharge in thundercloud. It was revealed also an indication to positron generation in thunderclouds at the time of gamma ray emission, as well as modulation of the neutron counting rate in Tien Shan neutron monitor which was operating at a (1.5-2) km order distance from the region of lightning development.

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“…The system is aimed to register the intensity of electric pulse signals which can arrive from various kinds of cosmic ray detectors; to the real time analysis of measurement results in an automatic regime; and to store these data for permanent keeping in a globally accessible database with a web oriented interface. Originally, the system was designed for operation with output pulses of neutron-sensitive proportional counters used in informational channels of the Tien Shan 18NM64 neutron supermonitor [2], but it can be applied in other detector set-ups of a similar kind. The system supports long-term, high-precision registration of the intensity of signal pulses on its inputs: it can operate continuously with an uninterruptable duty cycle of up to some years, and permits to measure intensity variations of input signal with relative accuracy of up to 0.05-0.1%.…”

Section: Introductionmentioning

confidence: 99%

The STM32 microcontroller based pulse intensity registration system for the neutron monitor

et al. 2017

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Abstract. We present the outlines of a new microcontroller based data acquisition system which is aimed for reliable operation in a typical cosmic ray particle registration experiment. The system supports connection of up to 16 input signals and ensures the following operation functionality: (1) stable monitoring of the intensity of a digital pulse signal, or digitization of a continuous potential level with a low time resolution (typically, about 1 s-100 s); (2) registration of uninterruptable high-resolution (up to 5-10 µs) time series of the input signal intensity; (3) synchronization of registered time series with both external (physical) or local (programbased) trigger signal; (4) possibility of an on-the-fly change of the whole configuration of informational system (both the combination and type of input signals, time resolution and sum duration of the time series measurements, trigger logic, etc.) immediately in operation time through convenient communication by plain text messages in dialog mode. In particular, the considered system is applied now for a long-term, high precision measurement of the counting rate of neutron signals at the NM64 type neutron supermonitor of the Tien Shan mountain cosmic ray station, with a real-time representation of the whole collected dataset in a WWW database.

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The Tien-Shan mountain cosmic ray station of the Ionosphere Institute of Kazakhstan Republic

Cited by 7 publications

References 11 publications

New complex EAS installation of the Tien Shan mountain cosmic ray station

New complex EAS installation of the Tien Shan mountain cosmic ray station

The prolonged gamma ray enhancement and the short radiation burst events observed in thunderstorms at Tien Shan

The STM32 microcontroller based pulse intensity registration system for the neutron monitor

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