Measurements of the charge ratio and the momentum spectrum of cosmic-ray muons at large zenith angles in the range (20÷1000) GeV/c

1975 ◽  
Vol 26 (2) ◽  
pp. 559-576 ◽  
Author(s):  
S. Iida
Keyword(s):  
Cosmic Ray ◽  
Momentum Spectrum ◽  
Charge Ratio

A proposed apparatus for the measurement of the cosmic-ray muon momentum spectrum and charge ratio, and the investigation of muon interactions

1968 ◽  
Vol 46 (10) ◽  
pp. S1135-S1139 ◽  
Author(s):  
R. M. Bull ◽  
W. F. Nash ◽  
Wendy J. Milne ◽  
R. E. Woodham ◽  
Y. Yeivin ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Momentum Spectrum ◽  
Muon Flux ◽  
Low Energy ◽  
Charge Ratio ◽  
Energy Component ◽  
Expected Performance ◽  
Muon Momentum

The construction of a cosmic-ray spark-chamber spectrometer for use in the study of the charge ratio and interactions of muons at energies up to 3 000 GeV is proposed. The apparatus will consist of a stack of interleaved spark chambers and magnetized iron plates, placed at a depth of 250 m.w.e. underground in order to remove the low-energy component of the cosmic-ray muon flux. This report gives an appraisal of the design of the apparatus and summarizes its expected performance.

Das Impulsspektrum der Ultrastrahlungs-Muonen und das Ladungsverhältnis in 5200 m Höhe

1966 ◽  
Vol 21 (8) ◽  
pp. 1205-1210
Author(s):  
O. C. Allkofer ◽  
E. Kraft
Keyword(s):  
Sea Level ◽  
Cosmic Ray ◽  
Theoretical Models ◽  
Momentum Spectrum ◽  
Charge Ratio ◽  
Lead Absorber ◽  
Muon Spectrum ◽  
Total Spectrum ◽  
Good Agreement

The momentum spectrum of cosmic ray muons and the charge ratio at 5200 m above sea level have been measured. To separate the spectrum of muons from the total spectrum a lead absorber was used. From theoretical models the spectrum of muons is calculated. Good agreement is found between the calculated and measured muon spectrum.

The muon spectra near the geomagnetic equator

1968 ◽  
Vol 46 (10) ◽  
pp. S301-S305 ◽  
Author(s):  
O. C. Allkofer ◽  
R. D. Andresen ◽  
W. D. Dau
Keyword(s):  
Integral Intensity ◽  
Geomagnetic Latitude ◽  
Cosmic Ray ◽  
Momentum Spectrum ◽  
Low Energy ◽  
Charge Ratio ◽  
Theoretical Spectrum ◽  
Measured Spectrum ◽  
Geomagnetic Equator ◽  
Chamber Technique

The vertical momentum spectrum and the charge ratio of cosmic-ray muons have been investigated in the range 0.3–25 GeV/c at a geomagnetic latitude of λ = 9 °N at sea level. The investigations have been performed by means of a magnetic spectrograph using the spark chamber technique for track location. The measured spectrum in the low-energy region is about 20% smaller than the spectra at high geomagnetic latitudes. The integral intensity for particles which penetrate more than 15 cm of lead is 7.25 × 10−3 cm−2 s−1 sr−1. The theoretical spectrum after Olbert is in agreement with our results.

Arrangement for measuring the momentum spectrum and the charge ratio of the high-energy cosmic-ray muon horizontal flux

1968 ◽  
Vol 46 (10) ◽  
pp. S1169-S1171
Author(s):  
S. V. Alchudjian ◽  
T. L. Asatiani ◽  
H. V. Badalian ◽  
K. A. Gazarian ◽  
G. I. Mekilov ◽  
...  
Keyword(s):  
Charged Particles ◽  
Cosmic Ray ◽  
High Energy ◽  
Momentum Spectrum ◽  
Magnetic Spectrometer ◽  
Charge Ratio ◽  
Horizontal Flux ◽  
The Wire ◽  
With Memory

The magnetic spectrometer of the wire spark chambers with memory of ferrite cores designed for the measurement of the momentum spectrum of high-energy muons (p ~ 3 × 103 GeV/c) at large zenith angles is described. Some characteristics of the wire spark chambers of large dimensions (S ~ 1 m2) are given. The magnetic deflections of the charged particles are automatically calculated and printed by means of a special calculating device. The ferrite memories of the wire spark chambers were directly used as "memory of the device".

scholarly journals A compact detector for the measurement of the cosmic-ray muon charge ratio

1998 ◽  
Vol 414 (2-3) ◽  
pp. 205-217 ◽  
Author(s):  
B. Vulpescu ◽  
J. Wentz ◽  
I.M. Brâncuş ◽  
H. Rebel ◽  
A.F. Badea ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Charge Ratio

On the charge ratio of cosmic-ray muons at sea level

1963 ◽  
Vol 30 (3) ◽  
pp. 762-771 ◽  
Author(s):  
P. V. Ramana Murthy
Keyword(s):  
Sea Level ◽  
Cosmic Ray ◽  
Charge Ratio

COSMIC RAY MUON MEASUREMENT BY L3 SPECTROMETER AT CERN

2001 ◽  
Vol 16 (26) ◽  
pp. 1667-1670
Author(s):  
◽  
YUQIAN MA
Keyword(s):  
Dynamic Range ◽  
Cosmic Ray ◽  
Charge Ratio ◽  
Muon Spectrum ◽  
Wide Dynamic Range ◽  
Air Shower ◽  
System A ◽  
First Results ◽  
Low Threshold ◽  
Shower Array

L3 + C is a branch experiment on L3 magnet spectrometer, which is located on the ring of LEP accelerator at CERN. To take the advantage of L3 muon chambers in its low threshold, wide dynamic range and high resolution, the momentum of cosmic ray muons in the range of 15–2000 GeV/c at a shallow depth of 30 m of molasse can be measured precisely. Since 1998, a scintillator detector system, a new fast trigger and DAQ system, and a small air shower array had been established for study the CR muon events independently. Up to August 2000, 8 billion muons and 25 million air shower events had been recorded. The first results for CR muon spectrum and the charge ratio etc. had been obtained.

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