Aim of this research is a hazards assessment of radon concentration, effective radium content and radon exhalation rate were estimated in 24 vegetables samples and 9 fruits samples that collected randomly from local markets in Muang Nakhon Phanom Municipality, Thailand by active detecting method (RAD 7). The results showed that radon concentrations in vegetables were in the range of 6.27 –...
Development of an accelerator-based light source for generating coherent terahertz (THz) and mid-infrared (MIR) free-electron laser (FEL) is ongoing at the PBP-CMU Electron Linac Laboratory (PCELL). For producing high quality radiation, suitable electron beam property is necessary. In particle accelerator technology, transverse beam distribution and profile can be measured by using several...
The terahertz (THz) region of the electromagnetic spectrum covering the frequency range from 0.1 to 10 THz has attracted much attention in terms of new scientific and industrial applications. We are considering producing the THz radiation with an accelerator source based free-electron laser (FEL). The main goal is to achieve intense THz radiation at tunable frequencies of between 0.5 and 5.0...
Mid-infrared and terahertz free-electron laser (MIR/THz FEL) facility is under construction at the PBP-CMU Electron Linac Laboratory (PCELL) in Chiang Mai University. For producing MIR-FEL, electron beams with an energy of 25 MeV accelerated by a radio-frequency linear accelerator (RF linac) are required. Transporting the 25-MeV electron beam from the linac to the MIR-FEL station requires...
High-density linear plasma devices can generate plasmas, which have similar properties to that of the Tokamaks[1,2]. But, they have a much less complex structure and fewer components. The linear devices are much more cost-effective than the tokamaks for plasma material interaction studies.
In this work, results of plasma diagnostics by optical emission spectroscopy(OES) and Langmuir probe...
Cholangiocarcinoma (CCA), also known as bile duct cancer, is a silent cancer that is difficult to treat because patients are diagnosed at an advanced stage with incurable disease. Chemotherapy and radiotherapy are additional treatments options for these patients that can help improve their quality of life and survival. Nowadays, radiotherapy utilizing proton beams is gaining interest in the...
This report presents the design of an optical system to deliver X-rays produced from a 6.5T superconducting wavelength shifter, BL7.3 beamline at the Synchrotron Light Research Institute of Thailand. The beamline is planned for X-ray fluorescence (XRF) and micro-beam XRF measurements. The optical design of this beamline is based on the working principle of a single curved crystal polychromator...
TRR-1/M1 reserach reactor is loaded with 8.5% and 20% weight of uranium standard fuel elements. Fuel elements must periodically be shuffled to the reactor core in order to optimize the power, flux distribution and reactivity excess. The Reactivity Initiated Accident (RIA) analysis has been performed for rapidly removal sample from the reactor core and reactivity insertion rate of a sample is...
A beam current transformer is one of the most important equipment for electron beam characterization in an accelerator system. The electron beam current can be evaluated from the induced pulse current from the current transformer when the electron beam passes through the transformer. The components of the transformer consist of a ferrite core wound with copper wire for magnetic field coupling...
In this paper, we present the experimental setup for measuring proton-induced luminescence with a fabricated scintillating glass. The glass was synthesized based on barium-gadolinium-fluoroborate glasses using the quenching technique. The luminescence generated by X-ray excitation of the glass demonstrates that an emission band centers around 400 nm owing to the Ce3+ by 5d–4f transition....
The Cs$_2$LiYCl$_6$:Ce or CLYC crystal is an inorganic scintillator which has been developed for the $\gamma$-ray and neutron measurement with the high detection efficiency, high resolution, no need unfolding technique. To enhance the measurement of the fast neutron, the CLYC with $^7$Li-enrichment (hereafter referred to as CLYC7) scintillator are developed. In this work, the response of the...
To enhance the physical, chemical, or biological properties of polymer materials, the X-rays beam is used extensively to modify. The heavy metals in wastewater are hardly biodegradable and disposable in human organs because of their toxicity. Thus, an effective removal for the heavy metal ions from wastewater has triggered considerable concerns to environmentalists. Chitosan biomaterials have...
