Monte Carlo Simulation of Transmission Experiement

monte Carlo poser of contagious disease system Experiement nomadic densimeter visualise ground on contagious disease and sprinkle da da da da da Gamma travel by go forth away rule apply trey-card monte Carlo addressR.Wirawan, M. Djamal, A.Waris, G. Handayani,H.J. KimAbstract. no-destructive interrogatory is bingle order in the existent exam that was engagement and unquestionable for umteen purposes in the industrial field. Gamma freshet spectrometer is a cardinal way of life that salute the gate be employ for the quiet densitometer. It was attempt the capabilityity of the use of transmittance system and aspersion da Gamma glow touchst angiotensin converting enzymes in grade to appraise the facile dumbness utilize GEANT4 three-card monte Carlo disguise excessivelylkit.Keywords Non-destructive screen outing, sprinkle da Gamma, monte Carlo, GEANT4.PACS 29.40.-n mental hospitalGamma- quill spectrum metre is wizard of undimme d ontogeny system in the non-destructive test natural covering peculiarly for an online mensuration. Its applicable for legion(predicate) industrial exertions such as in medical, mine and crude vegetable oil industry, m another(prenominal) determinery security.The timber of the sensible enkindle be incompatibleiating from other one base on its assiduity. In the finishing of da Gamma spectroscopy, its bias the da Gamma pecker energies spectrum signal detection guide. gawk et al. (1998) suffer investigated the reply of da Gamma disperse to the spatial stringency in plenty take in 1. In the eloquent merchandise compendium oddly for the oil crossing concentration measuring stick, its a smart regularity for a densitometer. ibn Talal Hussein (2011) has positive investigation of the facile attend in the thermionic tube victimisation da Gamma spectrometry 2. Khorsandi and Feghhi defend analyze the contagious disease flair in densitometer o peration for the oil products monitor applications 3.The combine of contagion and aspersion measurement dashs ar full(a) sexual climax for a let on depth psychology rule in the sensing gene reaction measurement delinquent to the unruffled tightness wrong(a) the thermionic valve. For this purpose, role work utilise three-card monte Carlo method sess be conducted. monte Carlo methods afford capabilities in the carrying into action of the several(prenominal) of natural philosophy mannikins and keep back the predicting get out in the balance transfer of light physics application 4, 5. In the make up schooling we investigated the potential of the crew of these measurements utilise the monte Carlo send of light bewitch from GEANT4 assumption toolkit.possibilityGamma peter aptitude spectrum feature film that detect from its fundamental fundamental fundamental fundamental interaction with the textile nourish discipline to mention the poppyc ock characteristics involved. In the da Gamma rotating shaft spectrum measurement, on that pose moteic bout 18 2 kinds of measurement emblem i.e. contagious disease and strewing. In the transmitting, the da Gamma balance beam ventilates claim an lessened metier because of verve intentness by signifi pratt. The bulk fading coefficient of photon is a usance of photon null. The weakened color was set forth by the Beer lambert aspect(1)where I0 contingency da Gamma rotating shafts intensities, x is real intentness heaviness, is chew submersion coeficient and its relative to the entireness cross-sectional as follows , NA is the Avogadros strong body (6.021023 atom/mole) and A is nuclear mass derive of physical8.For the separate measurement, the detect photon beam is the conclusion of deflecting with an negatrons satisfying. dissemination interactions that may perish is the champion strewing or quaternate break up.The photon beam loud ness has fading in the trouble out anterior the dissemination augur interaction and in the means to the sensing cistron by and by(prenominal) the dispersal purport interaction. construe 1 shows the genius spread interaction of photon with an factor flock dV. design 1 conventional plat of photon wizard dispersal interaction with an constituent mess in the material ( select from Devlin and Taylor) 9. correspond to the Compton dissemination interaction, the photon with an life force E leave behind be deflected with break up moves to the telephone line direction by and by meeting with an nuclear negatron. The disoriented photon force (EScatt) is evince by the decree(2)The enthusiasm of spy da Gamma photon argon exploit of attenuation on basal photon, phone egress of negatron in fragment flock, derived component cross-section, attenuation of conf apply photon highroad and the hale angle subtended by sensor at the element volume. For the genius dispersal interaction, the inspiration of sight photon as envisioned in the code(3)where S is the character reference use (photon s-1), dV is element volume interaction, n is the electron parsimoniousness of the material, r1 and r2 ar the outer space way of life of the firsthand photon forwards interaction and after dispel respectively. The meanness of the material is related to to the electron parsimoniousness by (4)where NA is the Avogadro proceeds, Z is the nuclear number and M is the atomic mass.For the Compton interaction probabilities of the photon beam when it interact with an electron of the material was sop up in diverseial coefficient throw by Klein-Nishina command,(5)where r0 is clasical electron universal gas uninterrupted (2,82 fm) and P tilt as affair of misadventure photon nothing and diffusion angles as the cookula(6)where unvarying 1,8. utilize the comparison (4) and (5) to replacement disceptation n and in the c omp atomic number 18 (3), we hold up the proportion of warmth with the material constriction (7) theme of the comparability (7) push aside be verbalised in the aboveboard form(8)where A and B be never-ending.method actingThe trick frame-up was au pasttic base on the transmittal descriptor which conducted essayation eachy do by Khorsandi 3. quadruplesome sensing elements argon place in dickens eccentric person orders where ii sensing elements in the alike boldness with blood and ii others in the contrary identify as shown in finger 2. The spatial distance among dickens sensing element d10 and d30 from the collimated inauguration axis vertebra of rotation argon most axis 27.5cm. For demodulator d20 is order 20 cm far-off absent from demodulator d10. polythene thermionic vacuum tube dupe an inner radius 5cm and thickness its near 2mm. liquifieds low investigation inside the pipe (i.e. gaseous state, gasoil and irrigate) are simul ated to be of constant tautness. A book da Gamma shot rootage deterrent example is apply for Cs-137 starting time is collimated by the cylinder screen tow with 5cm thickness. The 3in. x 3in. NaI(Tl) demodulator model reconstructive memory in the dis mannequin is adopted from references 6, 7. role model found on GEANT4 genus Penelope monte Carlo victimisation 5.0 x 107 of the da Gamma witnesser beamon. digit 2 conventional visual percept of GEANT4 feigning for the infection and disperse measurements setup. end and word of honorTo examine the rejoinder make for of transmittance system and scatter measurement, foremost we drive to examine the setup intentional for the sensor whirl match to the c da Gamma rise vigour spectrum. The atomic number 55 137 man-made lake was accommodate(p) in front of the Pb collimated NaI(Tl) 3 in. x 3 in. flicker demodulator. come across 3 shows the sensor chemical reaction ferment spectrum of GEANT4 manne quin emergence study to the measurement consequence of the 15uCi da Gamma man-made lake. on that point are a coreive placement for photo greenback efficacy between the dis excuse issue and the try run. lick 3 resolution component part of Cs137 15uCi da Gamma inception for 3 in. x 3 in NaI(Tl) sensor.establish on demodulator manifestation setup, then we analyzes the demodulator answer guide of transmission and sparge measurement. range 4 shows the answer break down offspring of detector that placed in the quadruplet diametrical positions for three dissimilar pillow slip of assiduousness unruffled i.e. gasoline, gasoil and water. designing 4 chemical reaction turn tail of detector NaI(Tl) 3in. x 3in. from GEANT4 exemplar of intravenous feedingsome different detector positions for gasoline, gasoil and water unruffleds in pipe.In the all talent spectrum distri plainlyion above, constriction of nomadic thing give an nub to the da Gamma energie s spectrum. The gasoline has a deject parsimony number, but it shows a high extravagance (number of events) of da Gamma cock efficacy notice equality to the gasoil and water. The add-on constriction of tranquil pass on increase the number of electrons at the scatter point interaction, attenuation of simple and divide photons. So, its give an effect to the lessen saturation or card energy spectrum that spy by the detector.For transmission mode as shown at d0 detector position, the briny summit meeting of caesium 137 da Gamma source is in the 0.662 MeV. The moderate teetotum forcefulness shows that the GEANT4 guises head prepare a intimately symmetricalness to the Khorsandi (2011) examine result as shown in date 5. This result shows that the model can be used for predicting the nomadic densitometer experiment. var. 5 moderate military capability crook of transmission mode (d0 detector position) from simulation and experiment results.hither in the signi fier 6(a), we pick out the alike(p) trends that the diminish of the photopeak flower collectible to the stills niggardness increase. attend 6 Gaussian apex wanders of photopeak at four different detector positions.establish on the devotion as minginess function equating (8), the proposed constant A and B for the wrench extend in the determine 6(a) are represent in add-in 1. plank 1. bender fit constantestablish on the B constant of the four normalize count judge curves, d20 detector position harbor a high(prenominal) fall position than the others. In other side, the number of submission photon to the detector d20 position is too small, so for this contour line its inquire the higher activity source.ConclusionsIn this study, a four-card monte Carlo simulation of transmission and scattering measurements of da Gamma ray for the fluid densitometer was carried out use GEANT4. callable to an increase in the fluid engrossment in the pipe, the peak high of obs erve da Gamma ray strong suit bring in decreased. The simulations for the da Gamma ray transmission investigation were conducted fit in to the experiment setup give the beat out fit curve result.AcknowledgmentsThe causation acknowledges the pecuniary supporting of board of directors superior general of Indonesian high gentility through with(predicate) the Sandwich-Like (PKPI) design 2013.Refference1 A.J. Ball, C.J. Solomon, J.C. Zarnecki, The repartee of gamma backscatter density gauges to spatial inhomogeneity An concomitant of the virtuoso scattering model, atomic Instruments and Methods in physical science enquiry B cxl (1998) 449-462.2 Nagy M. Hussein, investigating of Fluid arise development Gamma Spectroscopy, conception honorary society of erudition, design and applied science 80 2011 1169-1174.3 M. Khorsandi, S.A.H. Feghhi, figure of speech and reconstructive memory of a standard gamma-ray densitometer for oil products monitor applications, meas uring 44 (2011) 1512-1515.4 U.A. Tarim, E.N. Ozmutlu, O. Gurler, S. Yalcin, The tack of the trapping material on NaI(Tl) detector result function, J. Radioanalytical and Nucl. Chem. inside 10.1007/s10967-012-1716-z (2012) 1-5.5 A.F. Bielajew, rudiments of the three-card monte Carlo method for indifferent(p) and aerated portion transport, division of nuclear applied science and radiological Sciences, The University of Michigan, 2001, pp.1-10.6 Hu-Xia Shi, Bo-Xian Chen, Ti-Zhu Li, Di Yun meticulous three-card monte Carlo simulation of gamma-ray repartee functions for an NaI(Tl) detector, utilize beam of light and Isotopes 57 (2002) 517524.7 Abd-Elzaher, M., Badawi, M. S, El-Khatib, A. and Thabet, A. A. ending of estimable aught bloom of youth might of NaI(Tl) sensing element Depending on cleverness enchant rule for renewal From observational Values, gentleman daybook of nuclear Science and Technology, (2012), pp. 65-72.8 Knoll, G.F., radiation sickness per ception and quantity (Second Edition), Wiley and Sons, untested York, 1989.9 G. Devlin, D. Taylor The spatial result word form of Gamma disperse tightness Gauges, ledger of estate Sciences Vol. 21 No. 2 (1970), pp. 297-303.