Different types of ground-based detectors have been developed and deployed around the world to monitor and study cosmic ray (CR) variations. We have designed, constructed, and operated a small (20×20 cm2) three-layer multiwire proportional chamber detector for CR muon observations. The technical aspects of this detector will be briefly discussed. The ability of the detector to detect high-energy CR muons was established. The detector performed well in this sense and showed comparable results to our existing 1-m2 scintillator detector. The influence of atmospheric effects, mainly pressure and temperature, on the detected muons was determined. The corresponding coefficients were calculated and used to eliminate the pressure and temperature effects from the measured data.
Due to the limited resolution and accuracy of several technologies that are able to get a digital X-ray image with a good
performance in the very high rates, micro-pattern technology can achieve these features by using the most effective
example of which is gas electron multiplier (GEM). The main objective of this project is to develop a two dimensions
imaging that can be used in medical imaging purposes. The project consists of the theoretical parts of the process,
including simulating the best detector dimensions, geometry, and the energy range of the applied radiation. Furthermore,
constructing a large active area of triple GEM detector, and preparing the necessary setup parts for medical imaging
system assumed. This paper presents the designing and construction of a prototype of triple-GEM detector (10cm x10
cm) that can achieve the goals as a first step toward attaining this project. In addition, the preliminary results from X-ray
and some gamma sources as a testing of the prototype detector will be presented, added to that the discussions of
outlined tasks and achievements. This paper will show the future plane of the whole project and more details about the
A rotatable muon detection telescope with two layers of scintillators was designed and constructed at the physics detector laboratory at KACST, Saudi Arabia. The objective of this system is to study the zenith angle dependence of high energy cosmic ray muons. The system has the flexibility to rotate in all directions to cover the zenith angle from 0- 90<sup>0</sup> for muon distribution studies, as well as the azimuth angle from 0-359<sup>0</sup> to observe the geomagnetic field effects on it. In this paper, the designing and the construction works as well as the calibration procedures for the detection system will be given. Some of the preliminarily results and some of the future experiments and possible modifications will be outlined.
Cosmic Ray (CR) variation measurements have been extensively conducted using different type of detectors sensing different components of CR and at different locations around the world. We have constructed and, operated a single channel muon detector in the central part of Saudi Arabia. The main goal of this detector is to record the intensity of cosmic rays on different time scales and investigate their correlations with environment parameters. This detector is expected to fill the gap between neutron monitors and muon telescopes that exist around the world. In this paper, the technical aspects of this detector will be briefly discussed. Calibration procedures conducted to characterize and improve its performance will be detailed. These include the effect of the detector geometry and the internal surface coating.