The CARPET Ground Facility for Detecting the Charged Component of Cosmic Rays

Abstract. In this paper, we discuss the influence of meteorological effects on the data of the ground installation CARPET, which is a detector of the charged component of secondary cosmic rays (CRs). This device is designed in the P.N. Lebedev Physical Institute (LPI, Moscow, Russia) and installed at the Dolgoprudny scientific station (Dolgoprudny, Moscow region; 55.56∘ N, 37.3∘ E; geomagnetic cutoff rigidity (Rc = 2.12 GV) in 2017. Based on the data obtained in 2019–2020, the barometric and temperature correction coefficients for the CARPET installation were determined. The barometric coefficient was calculated from the data of the barometric pressure sensor included in the installation. To determine the temperature effect, we used the data of upper-air sounding of the atmosphere obtained by the Federal State Budgetary Institution “Central Aerological Observatory” (CAO), also located in Dolgoprudny. Upper-air sounds launch twice a day and can reach an altitude of more than 30 km.

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A mobile complex to record several secondary cosmic rays components

E3S Web of Conferences ◽

10.1051/e3sconf/201912702001 ◽

2019 ◽

Vol 127 ◽

pp. 02001

Author(s):

Evgenya Mikhalko ◽

Evgeny Maurchev

Keyword(s):

Energy Consumption ◽

Cosmic Rays ◽

Effective Energy ◽

Record Data ◽

Charged Component ◽

Neutron Component ◽

Mobile Complex ◽

Basic Equipment

The paper presents a research of the different components variations of the secondary cosmic rays (SCR). These are being monitored at the Cosmic Rays Laboratory, PGI, Apatity, using an integrated set based on the SCR basic components detectors. Also, besides stationary equipment, a mobile complex has been developed and made, which consists of a scintillation spectrometer, a charged component detector (CCD) based on the Geiger-Muller counters, and a neutron component detector (Е > 1 MeV) based on helium counters SNM-18. The mobile complex was put into operation in the early 2019. It operates in parallel with the basic equipment, recording SCRs. Small dimensions, effective energy consumption and ability to record data onto flash drives allows this complex to be used in SCR-monitoring in remote places, as well as on ships away at sea.

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The angular distribution and attenuation of the star-producing component of cosmic rays

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1952.0163 ◽

1952 ◽

Vol 214 (1117) ◽

pp. 225-237 ◽

Cited By ~ 9

Keyword(s):

Angular Distribution ◽

Cosmic Rays ◽

Direct Measurement ◽

Zenith Angle ◽

High Energy ◽

Cascade Process ◽

Attenuation Length ◽

Energy Component ◽

Charged Component ◽

High Energy Component

Some properties of cosmic rays at 3570 m have been studied by observing nuclear dis-integrations in G5 emulsion under lead absorbers. Good geometrical definition was ensured by making these absorbers in the form of inverted lead cones of various half-angles. The nuclear cascade process is such that the overall attenuation in lead of the star-producing component increases with energy, the attenuation length varying from 370 ± 30 to 210 ± 70 g cm -2 over the range of energy responsible for the stars examined. Interpretation of the results to give the angular distribution of the star-producing radiation depends upon the nature of the cascade process. However, it is certainly more collimated than a cos 2 Θ steradian -1 distribution, where Θ is the zenith angle, and may be of the form cos 4 Θ steradian -1 for the high-energy component. For the charged component alone a direct measurement gave cos 5 ± 1 Θ steradian -1 . The rate of production in emulsion under no absorber of all stars with three or more heavy prongs is 17·0 ± 0·4 cm -3 day -1 .

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Accounting for meteorological effects in the the detector of the charged component of cosmic rays

10.5194/gi-2021-9 ◽

2021 ◽

Author(s):

Maxim Philippov ◽

Vladimir Makhmutov ◽

Galina Bazilevskaya ◽

Fedor Zagumennov ◽

Vladimir Fomenko ◽

...

Keyword(s):

Cosmic Rays ◽

Barometric Pressure ◽

Lebedev Physical Institute ◽

Federal State ◽

Temperature Coefficients ◽

Charged Component ◽

Scientific Station ◽

Central Aerological Observatory ◽

Meteorological Effects ◽

Barometric Coefficient

Abstract. In this paper, we discuss the influence of meteorological effects on the data of the ground installation CARPET, which is a detector of the charged component of secondary cosmic rays (CRs). This device is designed in the P.N. Lebedev Physical Institute (LPI, Moscow, Russia) and installed at the Dolgoprudny scientific station (Dolgoprudny, Moscow region, S55.56 °, W37.3 °; Rc = 2.12 GV) in 2017. Based on the data obtained in 2019–2020, the barometric and temperature coefficients for the CARPET installation were determined. The barometric coefficient was calculated from the data of the barometric pressure sensor included in the installation. To determine the temperature effect, we used the data of upper-air sounding of the atmosphere obtained by the Federal State Budgetary Institution «Central Aerological Observatory» (CAO), also located in Dolgoprudny.

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