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Monte Carlo Simulations of Resistive Plate Chamber for 0.511 MeV Photon with FLUKA

100%
Demir N., Aydın A.
Acta Physica Polonica A
|
2016
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vol. 130
|
issue 1
466-468
EN
We report the simulation results of resistive plate chamber for 0.511 MeV photons using FLUKA code. The efficiency of resistive plate chamber is directly related to the number of electrons produced in the gas gap. Therefore, the type of converter materials and thickness are important parameters for resistive plate chamber detection performance. In this work, the FLUKA based simulations for parallel and isotropic photons were operated for detection efficiency by choosing different converter materials and thicknesses.
2
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Investigation of Energy Deposition and Dose Distributions on Collimator under Photon Beam

81%
Demir N., Kuluöztürk Z., Akkurt İ.
|
EN
The bremsstrahlung photon facility where photon beam can be created via bremsstrahlung processes has been installed in many different accelerator in the world. TARLA (Turkish Accelerator and Radiation Laboratory at Ankara) will be first facility of TAC (Turkish Accelerator Center) project in Turkey. An optimal design of collimator is important for obtain a clean high energy photon beam in a bremsstrahlung facility. In this study the photon spectrum has been obtained depending on the entrance angle of the collimator. The energy deposition and dose distributions on the collimator by photon beam generated from 30 MeV energy electron beam have been calculated with FLUKA Monte Carlo simulation code.
3
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Angular Distribution of Bremsstrahlung Photons in Ta Target for 40 MeV Electron Beam

81%
Demir N., Kuluöztürk Z., Akkurt İ.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2B
B-443-B-444
EN
Bremsstrahlung photons are created by electron beams de-accelerating in electric field (coupling with a thin radiator) and are used in a variety of different fields. In nuclear physics experiments it is important to transport and focus the created photon beam into the experimental cavity. Here angular distribution of the photon beam is one of the important parameters, which should be known. In this study a FLUKA simulation has been done to obtain angular distribution of photon beam created by interaction of 40 MeV electron beam with the tantalum (Ta) radiator of varied thickness, which is planned to be used in bremsstrahlung photon facility at TARLA (Turkish Accelerator and Radiation Laboratory in Ankara). TARLA will be the first facility of Turkish Accelerator Center project.
4
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Effect of FK506 administration after obturator nerve injury: A functional and ultrastructural study

61%
Yildirim F. B., Sarikcioglu L., Ozsoy U., Demir N., Demirtop A., Ucar Y.
|
EN
The frequency of obturator nerve damage due to pelvic diseases, fractures or gynecologic procedures is uncertain. In the present study, we investigated the effect of FK506, a potent macrolide antibiotic and immunosuppresant, on obturator nerve recovery at morphological and functional levels. Forty female Wistar rats were randomly divided into four groups (control, sham, FK506-treated, vehicle-treated). In half of animals (FK506-treated and vehicle-treated) an obturator nerve crush (30 seconds clamp) was created. In FK506-treated group FK506 administration (1 mg/kg/day, subcutaneously) was performed on each postoperative day. All the rats were functionally evaluated by pinch and adduction tests preoperatively and postoperatively at one, two, three and four weeks after nerve injury. On the 28th postoperative day obturator nerve samples were collected and analyzed qualitatively by light and electron microscopy. FK506 treatment resulted in dramatic improvement in nerve function and in the ultrastructure of nerve fibers suggesting its therapeutic potential in traumatic obturator nerve injury.
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