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Full-Text Articles in Physics

Spin (Pseudospin) Doublet In View Of Energy-Dependent Potential, Mustafa Salti, Oktay Aydoğdu Jan 2017

Spin (Pseudospin) Doublet In View Of Energy-Dependent Potential, Mustafa Salti, Oktay Aydoğdu

Turkish Journal of Physics

Behavior of Dirac particles in the presence of scalar, vector, and tensor potentials respectively represented by energy-dependent Morse and Coulomb-like potentials is examined by working out the Dirac equation under the condition of spin (pseudospin) symmetry. The closed form of the energy eigenvalue equation and corresponding wave functions in terms of hypergeometric functions are acquired by making use of the asymptotic iteration method. We investigate the effect of energy-dependent potential on both bound states and energy splitting between members of spin (pseudospin) doublets.


Magnet Design For The Storage Ring Of Turkay, Zafer Nergi̇z Jan 2017

Magnet Design For The Storage Ring Of Turkay, Zafer Nergi̇z

Turkish Journal of Physics

In synchrotron light sources the radiation is emitted from bending magnets and insertion devices (undulators, wigglers) placed on the storage ring by accelerating charged particles radially. The frequencies of produced radiation can range over the entire electromagnetic spectrum and have polarization characteristics. In synchrotron machines, the electron beam is forced to travel on a circular trajectory by the use of bending magnets. Quadrupole magnets are used to focus the beam. In this paper, we present the design studies for bending, quadrupole, and sextupole magnets for the storage ring of the Turkish synchrotron radiation source (TURKAY), which is in the design …


Diluted Magnetic Semiconductor: Structure, Size And Shape, And Magnetic Properties, Muhammet Arucu Jan 2017

Diluted Magnetic Semiconductor: Structure, Size And Shape, And Magnetic Properties, Muhammet Arucu

Turkish Journal of Physics

In dilute magnetic metallic alloys, spin exchange interactions among transition metal ions at the ZnO structure cause changes in the magnetic properties of the nanocrystals depending on size and shape. The effect of size and shape on the structural and magnetic properties of semiconductors, using atomistic spin calculations, is the main topic of this study. When the size of the system decreases to a few nanometers, stability is not observed as a result of the large size. We theoretically examine the magnetic properties of CoZnO materials according to size and shape effects using the Monte Carlo method and the Heisenberg …


Investigating The Instability Of The Torus Around The Blackhole In The Presence Of The Radial And Angular Velocity Perturbations, Orhan Dönmez Jan 2017

Investigating The Instability Of The Torus Around The Blackhole In The Presence Of The Radial And Angular Velocity Perturbations, Orhan Dönmez

Turkish Journal of Physics

We have performed the numerical simulation of the perturbed relativistic torus around the black hole by solving the general relativistic hydrodynamics equations on the equatorial plane. We have monitored the different simple models by applying the radial and angular velocity perturbations to the steady state torus around the black hole. The instabilities are triggered by adding the subsonic velocity fields over the radial and angular velocities of the stable torus. We have found the disk instability so-called the Papaloizou-Pringle instability and excited modes of the Quasi-Periodic Oscillations (QPOs) in the thin disk approximation case. The significant oscillations and oscillation modes …


Monitoring Akkuyu Nuclear Reactor Using Antineutrino Flux Measurement, Sertaç Öztürk, Aytül Adigüzel, Veysi̇ Erkcan Özcan, Nafi̇z Gökhan Ünel Jan 2017

Monitoring Akkuyu Nuclear Reactor Using Antineutrino Flux Measurement, Sertaç Öztürk, Aytül Adigüzel, Veysi̇ Erkcan Özcan, Nafi̇z Gökhan Ünel

Turkish Journal of Physics

We present a simulation-based study for monitoring Akkuyu nuclear power plant's activity using antineutrino flux originating from the reactor core. A gadolinium-doped water Cherenkov detector was designed and optimization studies were performed using the Geant4 simulation toolkit. It was found that the bottom (or top) face of the target should be instrumented by six 10-inch-diameter photomultiplier tubes with photon detection efficiency of about 35% and the optimum Gd concentration was found to be about 0.3%-0.5%. The first study on the design of a monitoring detector facility for Akkuyu nuclear power plant is discussed in this paper.


Study Of The Energetic Field Characteristics Of The Te-Modalwaves In Waveguides, Fati̇h Erden Jan 2017

Study Of The Energetic Field Characteristics Of The Te-Modalwaves In Waveguides, Fati̇h Erden

Turkish Journal of Physics

The energetic characteristics of cylindrical medium-free time-domain waveguide fields are solved within the framework of the evolutionary approach to electromagnetics. Solving the boundary-eigenvalue problem for transverse Laplacian yields a configurational basis in the waveguide cross section. Elements of the basis depend on transverse coordinates, whereas the modal amplitudes depend on the longitudinal coordinate, $z,$ and time, $t$. Solving the resulted Klein-Gordon equation yields a basis for analysis of the modal amplitudes. Exact solutions for the amplitudes of TE-modes are obtained, and the energetic field characteristics are derived in accordance with the causality principle.


Prompt Fission Neutron Energy Spectrum Of $^{252}Cf$ In Center Of Mass And Laboratory Systems, Mehmet Koçak, Humbat Ahmadov Jan 2017

Prompt Fission Neutron Energy Spectrum Of $^{252}Cf$ In Center Of Mass And Laboratory Systems, Mehmet Koçak, Humbat Ahmadov

Turkish Journal of Physics

In this work we discuss the influence of different forms of prompt fission neutron energy spectra in the fission fragment center of mass system on the laboratory spectrum of neutrons in spontaneous fission of $^{252}Cf$. We show that the Le Couteur spectrum, which takes into account multiple neutron emission of neutrons in the center of mass system, describes the observed neutron energy spectrum well when transformed to the laboratory system.


A Quartz Crystal Microbalance Study Of The Adsorption Of Benzene And Acetone Vapors Onto Coumarin-Substituted Manganese Phthalocyanine Film, Bi̇rsel Can Ömür, Ahmet Altindal Jan 2017

A Quartz Crystal Microbalance Study Of The Adsorption Of Benzene And Acetone Vapors Onto Coumarin-Substituted Manganese Phthalocyanine Film, Bi̇rsel Can Ömür, Ahmet Altindal

Turkish Journal of Physics

A novel coumarin-substituted manganese phthalocyanine (5) was successfully synthesized and used as sensing element for benzene and acetone vapor detection. The effects of water vapor on the benzene and acetone vapor-sensing properties and adsorption isotherms on thin film of 5 were also studied. Our preliminary results indicated that the presence of humidity modifies the baseline frequency but not the sensitivity of the sensor toward benzene and acetone vapors. Two isotherm models, Langmuir and Jovanovic isotherms, were selected to describe the adsorption process. Linear regression analysis, which is the most basic and commonly used predictive analysis method, was used to estimate …


Triangular Quantum Profiles: Transmission Probability And Energy Spectrum, Altuğ Arda Jan 2017

Triangular Quantum Profiles: Transmission Probability And Energy Spectrum, Altuğ Arda

Turkish Journal of Physics

Analytical expressions for the transition probability and the energy spectrum of the 1D Schrödinger equation with position-dependent mass are presented for the triangular quantum barrier and quantum well. The transmission coefficient is obtained by using the wave functions written in terms of Airy's functions and of the solutions of Kummer's differential equation. In order to show the validity of our analysis, an example by taking some numerical values for a GaAs heterostructure is presented.


Determination Of Height Profile From A Two-Dimensional Fringe Signal Using A Two-Dimensional Continuous Wavelet Transform, Özlem Kocahan Yilmaz Jan 2017

Determination Of Height Profile From A Two-Dimensional Fringe Signal Using A Two-Dimensional Continuous Wavelet Transform, Özlem Kocahan Yilmaz

Turkish Journal of Physics

The main objective of this study was 3-dimensional (3D) profile measurements with standard fringe projection, consisting of a CCD and a projector. For obtaining height information of objects pixel by pixel, phases have to be calculated from the images taken by the fringe projection technique. In this study, the 2-dimensional continuous wavelet transform (2D CWT) phase method was used for phase extraction. 1D and 2D CWT analyses of noisy images were compared in simulations performed for a 2-dimensional fringe signal by introducing the carrier frequencies in two spatial directions, $x $ and $y$. Profile measurement of an object was made …


The Effect Of Sintering In Different Atmospheres On Superconductivity Parameters Of Ybco, Mehmet Başoğlu Jan 2017

The Effect Of Sintering In Different Atmospheres On Superconductivity Parameters Of Ybco, Mehmet Başoğlu

Turkish Journal of Physics

YBa$_{2}$Cu$_{3}$O$_{7}$ (Y123) is a superconductor material discovered in 1987 and its transition temperature is above the liquid nitrogen temperature. It is known that superconductor samples produced by the solid-state reaction route are very often sintered in air atmosphere. However, in the presented work, Y123 was prepared by the same technique using a sintering ambient composed of a mixture of oxygen and argon gases for the first time. Critical current densities of the samples were calculated using results of magnetization measurements. It was obtained from magnetization analysis that all the samples exhibited superconductor character. It was also observed that the sample …


Investigation Of Binary Co$_{2}$X (X = In, Si, Sb, Sn, Ga) Half-Heusler Alloys, Adewumi Isaac Popoola Jan 2017

Investigation Of Binary Co$_{2}$X (X = In, Si, Sb, Sn, Ga) Half-Heusler Alloys, Adewumi Isaac Popoola

Turkish Journal of Physics

The electronic structure and mechanical properties of some cobalt-based binary half-Heusler alloys Co$_{2}$X (X = In, Si, Sb, Sn, Ga) have been investigated using the density functional theory approach. The site preference by cobalt and X is similar to the traditional half-Heusler structure. The results showed that Co$_{2}$Si is not a half-metal but rather an n-type degenerate semiconductor. The compounds Co$_{2}$Ga, Co$_{2}$Sb, and Co$_{2}$Sn are thermodynamically unstable and Co$_{2}$In is elastically unstable. With much care given to the lattice size, half metallicity is readily predicted in Co$_{2}$In, Co$_{2}$Ga, Co$_{2}$Sn, and Co$_{2}$Sb. All the compounds showed directional bonding and they should …


Higher-Dimensional Dust Collapse In F(R) Gravity, Zahid Ahmad, Muhammad Shoaib Khan Jan 2017

Higher-Dimensional Dust Collapse In F(R) Gravity, Zahid Ahmad, Muhammad Shoaib Khan

Turkish Journal of Physics

The $n+2$-dimensional gravitational collapse of pressureless fluid is investigated in metric $f(R)$ gravity. Matching conditions are derived by taking the $n+2$-dimensional Friedmann-Robertson-Walker (FRW) metric as interior spacetime and the $n+2$-dimensional Schwarzschild metric as exterior spacetime. In the analysis of the solution of field equations, the scalar curvature is assumed to be a constant. It is observed that the scalar curvature constant term $f(R_{0})$ slows the collapse.


Effect Of Pu Content On Uncertainty In Reactor Parameters Due To Use Of No Temperature Gradient In (U-Pu)O$_{2}$ Fuels, Mehmet Türkmen Jan 2017

Effect Of Pu Content On Uncertainty In Reactor Parameters Due To Use Of No Temperature Gradient In (U-Pu)O$_{2}$ Fuels, Mehmet Türkmen

Turkish Journal of Physics

Radial temperature distribution in a fuel rod is a parabolic function. Neutronics calculations are in general performed over a volume-averaged temperature by ignoring this distribution. Such an assumption results in an uncertainty in reactor design parameters. In this study, the magnitude of this uncertainty is estimated by solving the heat equation with a temperature-dependent conductivity coefficient coupled with a reactor physics code. The effect of radial fuel temperature distribution is investigated by representing the fuel region as multiregional. Uncertainty is investigated for various Pu contents of (U-Pu)O$_{2}$ fuel, a mix of depleted U and reactor-grade Pu. The effect of Pu …


Comparison Of Structural Properties Of Some Liquid Crystals, Emi̇ne Mi̇ne Çapar Jan 2017

Comparison Of Structural Properties Of Some Liquid Crystals, Emi̇ne Mi̇ne Çapar

Turkish Journal of Physics

Molecular dynamics simulations were performed for three liquid crystalline molecules, 4-cyano-4$'$-octyloxybip- henyl (8OCB), n-p-cyanobenzylidene-p-octyloxyaniline (CBOOA), and p-n-hexyloxybenzylidene-p$'$-aminobenzonitrile (HBAB). Simulation data were obtained for three liquid crystals in the nematic and isotropic phases to analyze their structural properties. The imine spacer group in the Schiff bases induces a stepped core structure in which the linearity is maintained. The distributions of the angles between some defined vectors imply that the core segments of CBOOA and HBAB are more floppy than the 8OCB core. The biaxialities, molecular dimensions, and molecular anisotropies were calculated. The results were compared for three mesogens in the nematic …


Investigation Of Low-Lying Magnetic Dipole Excitations In The $^{153}$Eu Nucleus, Emre Tabar Jan 2017

Investigation Of Low-Lying Magnetic Dipole Excitations In The $^{153}$Eu Nucleus, Emre Tabar

Turkish Journal of Physics

The properties of low-lying magnetic dipole ($M$1) excitations in $^{153}$Eu were studied within a rotational invariant quasiparticle phonon model that takes into account the symmetry-restoring as well as spin-spin residual forces. The calculations show that there are purely collective $M$1 excitations lying at 2-4 MeV fragmented over orbital 1$^{+}$ states of the $^{152}$Sm core nucleus. The results were compared to the experimentally known $M$1 excitations at 2-3 MeV. A reasonably good agreement in the total transition strength, the centroid energy, and the resonance width was obtained.


Promising Features Of In$_{0.5}$Ga$_{0.5}$N/Al$_{0.2}$Ga$_{0.8}$N Quantum Dot Lasers, Halima Bouchenafa, Badra Bouabdallah, Boucif Benichou Jan 2017

Promising Features Of In$_{0.5}$Ga$_{0.5}$N/Al$_{0.2}$Ga$_{0.8}$N Quantum Dot Lasers, Halima Bouchenafa, Badra Bouabdallah, Boucif Benichou

Turkish Journal of Physics

The group-III nitrides, InN, GaN, and AlN, and their alloys have emerged as one of the most important material classes for optoelectronic devices. The incorporation of quantum dots (QDs) as active material improves the performance of conventional optoelectronic devices, such as laser diodes. In this study, we present a theoretical analysis of the gain characteristics of In$_{x}$Ga$_{1-x}$N/Al$_{0.2}$Ga$_{0.8}$N three-dimensional quantum box lasers, based on the density matrix theory of semiconductor lasers with relaxation broadening. The study is done on three samples of QDs: GaN/Al$_{0.2}$Ga$_{0.8}$N, In$_{0.3}$Ga$_{0.7}$N/Al$_{0.2}$Ga$_{0.8}$N, and In$_{0.5}$Ga$_{0.5}$N/Al$_{0.2}$Ga$_{0.8}$N. A comparative study of the gain spectra of GaN/Al$_{0.2}$Ga$_{0.8}$N-based quantum-well and QD lasers is …


Lightest And Heaviest Two-Neutron Halo Nuclei, $^{6}$He And $^{22}$C, Waleed Hwash Jan 2017

Lightest And Heaviest Two-Neutron Halo Nuclei, $^{6}$He And $^{22}$C, Waleed Hwash

Turkish Journal of Physics

The microscopic cluster model approach has been performed to study the nuclear structure of the lightest and heaviest two-neutron halo nuclei, $^{6}$He and $^{22}$C, respectively. The matter radius and binding energy for the $^{6}$He and $^{22}$C nuclei are calculated and the effect of the core deformation ($^{20}$C) on the properties of $^{22}$C nuclei is also discussed. Calculations have shown that the microscopic cluster model provides a good description of binding energy as well as matter radius in comparison to experimental data. The fittings of some parameters such as central potential depth (V$_{o})$, empirical constant (r$_{o})$, and surface diffuseness value (a) …


Role Of Mg Doping In The Structural, Optical, And Electrical Characteristics Of Zno-Based Dsscs, İsmai̇l Polat, Sali̇h Yilmaz, Murat Tomaki̇n, Emi̇n Bacaksiz Jan 2017

Role Of Mg Doping In The Structural, Optical, And Electrical Characteristics Of Zno-Based Dsscs, İsmai̇l Polat, Sali̇h Yilmaz, Murat Tomaki̇n, Emi̇n Bacaksiz

Turkish Journal of Physics

ZnO- and Mg-doped ZnO samples are prepared by spray pyrolysis on conducting glass substrates to fabricate ZnO-based dye-sensitized solar cells (DSSCs). Influences of Mg-doping content on the power conversion efficiencies of ZnO-based DSSCs are investigated. X-ray diffraction results show that all the samples exhibit a hexagonal wurtzite structure. Scanning electron microscopy data indicate that the ZnO sample has uniform rods with 1 $\mu $m diameter. With respect to ZnO, the band gap value of 4 at.% Mg-doped ZnO samples improves to the value of 3.27 eV and a further increase in Mg level up to 6 at.% gives rise to …


Design Of Turkish Accelerator And Radiation Laboratory In Ankara (Tarla) Facility Injector Magnets, Avni̇ Aksoy Jan 2017

Design Of Turkish Accelerator And Radiation Laboratory In Ankara (Tarla) Facility Injector Magnets, Avni̇ Aksoy

Turkish Journal of Physics

The installation of a high current thermionic gun-based injector capable to accelerate a maximum 1.5 mA electron beam at 250 keV and continuous wave (CW) for various bunch repetition rates has been continuing at the Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) since 2014. The injector, which is based on totally normal conducting technology, will mainly consist of a thermionic DC electron gun, two stage bunch compressor cavities operating at 260 MHz and 1.3 GHz, one dipole magnet, five solenoid lenses and an additional one dipole magnet that is going to be used as spectrometer, and several steerer magnets. …


Bound States Of The Duffin-Kemmer-Petiau Equation For Square Potential Well With Position-Dependent Mass, Zoulikha Hammoud, Lyazid Chetouani Jan 2017

Bound States Of The Duffin-Kemmer-Petiau Equation For Square Potential Well With Position-Dependent Mass, Zoulikha Hammoud, Lyazid Chetouani

Turkish Journal of Physics

The effective mass Duffin-Kemmer-Petiau equation for spin 0 and spin 1 with a potential well is considered, and transcendental equations are derived for the energy eigenvalues. Numerical results are reported graphically, and the variations of the energy of the bound states are computed as a function of the well width and mass.


Field-Free Molecular Alignment Control Of Filamentation, Necati̇ Kaya Jan 2017

Field-Free Molecular Alignment Control Of Filamentation, Necati̇ Kaya

Turkish Journal of Physics

With an approach of controlling the nonlinearity of medium rather than the light field, the effect of field-free molecular alignment on filamentation and resulting white-light generation is studied. This is done by measuring the rotational wavepacket evolution of nitrogen molecules after passing of a femtosecond laser pump pulse by observing the nonlinear propagation dynamics of a variably delayed filament-producing probe pulse.


Phenomenological Potential Calculations For Cluster Decays, Asim Soylu Jan 2017

Phenomenological Potential Calculations For Cluster Decays, Asim Soylu

Turkish Journal of Physics

The half-lives of cluster decays from various nuclei having experimentally measured values have been calculated by using the Wentzel-Kramers-Brillouin method together with the Bohr-Sommerfeld quantization condition for three different types of phenomenological nuclear interactions: Woods-Saxon (WS), squared Woods-Saxon (WS-2), and mixed Woods-Saxon (mWS) potentials. By comparing the results with experimental values, rms values have been calculated. The half-lives of $^{14}$C, $^{15}$N, $^{16}$O, $^{17}$O, $^{18}$O, $^{20}$O, $^{22}$O, $^{23}$F, $^{22}$Ne, $^{24}$Ne, $^{25}$Ne, $^{26}$Ne, $^{28}$Mg, $^{30}$Mg, and $^{34}$Si decays from various isotopes whose experimental half-lives are unknown have also been calculated by using the WS, WS-2, and mWS potentials. The obtained results have …


Search Of Islands Of Stability For Hypothetical Superheavy Nuclei Using Covariant Density Functional Theory, Hazem Abusara, Shakeb Ahmad Jan 2017

Search Of Islands Of Stability For Hypothetical Superheavy Nuclei Using Covariant Density Functional Theory, Hazem Abusara, Shakeb Ahmad

Turkish Journal of Physics

A systematic search for the location of islands of stability has been performed for the proton number $100\le Z\le 220$ and the neutron number $Z+30\le N\le 2Z+30$ using covariant density functional theory (CDFT), a relativistic Hartree-Bogoliubov (RHB) formalism with separable pairing, for two different force parameters, DD-ME2 and NL3*. Locations of the islands of stability are identified by analysis of the two-neutron and two-proton separation energy, two-nucleon shell gaps, vanishing neutron and proton pairing gap, energy surface, and the single particle states. The results show that beyond $^{292}120$ only Z = 154 and N $>$ 220 can be a …


Bound-Free Pair Production With A Correction Term In Relativistic Heavy-Ion Collisions, Melek Yilmaz Şengül Jan 2017

Bound-Free Pair Production With A Correction Term In Relativistic Heavy-Ion Collisions, Melek Yilmaz Şengül

Turkish Journal of Physics

In our previous work, we calculated bound-free electron-positron pair production cross section without a correction term. In this work, bound-free electron-positron pair production with a correction term is considered to calculate the cross section for peripheral relativistic heavy ion collisions. The Dirac wave functions have been used for the leptons and first order corrections are included. It is seen that the results for the production cross sections are considerably smaller than those of the previous calculations. We applied the same method for the calculations of the antihydrogen production cross sections as well.


A Dft Study On The Electronic Structure Of Tungsten Trioxide Polymorphs, Masoud Mansouri, Tahereh Mahmoodi Jan 2017

A Dft Study On The Electronic Structure Of Tungsten Trioxide Polymorphs, Masoud Mansouri, Tahereh Mahmoodi

Turkish Journal of Physics

Tungsten trioxide ($WO_{3})$ is an intermediate product in the recovery of tungsten from its minerals. Recently, it has attracted increasing attention due to its exclusive structural properties and its high potential in electronic applications. The crystal lattice of tungsten trioxide is highly dependent on temperature. In this paper we investigated the equilibrium structure of tungsten trioxide in four crystal systems, i.e. monoclinic system, tetragonal system, orthorhombic system, and cubic system. We did our first principle calculations using a pseudopotential model based on the spin dependent density functional theory and implementing generalized gradient approximation for exchange correlation energy. In each case, …


Perturbative Construction Of The Two-Dimensional O(N) Nonlinear Sigma Model With Erg, Beki̇r Can Lütfüoğlu, Hidenori Sonoda Jan 2017

Perturbative Construction Of The Two-Dimensional O(N) Nonlinear Sigma Model With Erg, Beki̇r Can Lütfüoğlu, Hidenori Sonoda

Turkish Journal of Physics

We use the exact renormalization group (ERG) perturbatively to construct the Wilson action for the two-dimensional O(N) nonlinear sigma model (NLSM). The construction amounts to regularization of a nonlinear symmetry with a momentum cutoff. We find out that the model is parameterized by three functions. We show how to tune them by imposing the Ward--Takahashi (WT) identity. We construct two composite operators that generate infinitesimal change of the coupling constant and the renormalization of the scalar fields. Finally we show how the beta functions and the anomalous dimensions arise in the model up to 1-loop.


Linear Instability Of Dust Acoustic Waves In A Magnetized Gravitating Plasma In The Presence Of Dust Streaming, Himangshu Sahoo, Basudev Ghosh, Kalyan Kumar Mondal Jan 2017

Linear Instability Of Dust Acoustic Waves In A Magnetized Gravitating Plasma In The Presence Of Dust Streaming, Himangshu Sahoo, Basudev Ghosh, Kalyan Kumar Mondal

Turkish Journal of Physics

Linear instability of dust acoustic waves (DAWs) has been theoretically studied in a collisionless gravitating dust-ion magnetized plasma including the effect of dust streaming. A linear dispersion relation has been derived by using the method of normal mode analysis. Gravitational effect is found to make the low-frequency DAW mode linearly unstable in certain parametric regions. The dependence of the growth rate of the instability on various plasma parameters such as streaming of dust particles, size of the dust grain, strength of the magnetic field, obliqueness of propagation, and number density of dust particles has been numerically analyzed and presented graphically.


Identification Of The Hadronic Interaction Layer In A Highly Granular Calorimeter By Multivariate Techniques, Burak Bi̇lki̇ Jan 2017

Identification Of The Hadronic Interaction Layer In A Highly Granular Calorimeter By Multivariate Techniques, Burak Bi̇lki̇

Turkish Journal of Physics

Calorimetry in future and upgrade collider detectors has a clear overall trend towards high granularity, both laterally and longitudinally. This trend is a requirement for the full exploitation of particle flow algorithms, which reconstruct individual particles using the subdetector that provides the best resolution for this specific particle. The increased level of detail in the event topologies due to higher segmentation of the calorimeter provides additional handles for several calorimetric measurements, such as the identification of the hadronic interaction layer, which is not possible for calorimeters with traditional tower geometry. Here, the power of using multivariate statistical techniques in the …


Design Studies For The Beam Position Monitor (Bpm) Front-End Electronics Of The Turkish Accelerator And Radiation Laboratory In Ankara (Tarla), Ayhan Aydin, Ergün Kasap Jan 2017

Design Studies For The Beam Position Monitor (Bpm) Front-End Electronics Of The Turkish Accelerator And Radiation Laboratory In Ankara (Tarla), Ayhan Aydin, Ergün Kasap

Turkish Journal of Physics

A beam diagnostics system is vitally important to operate all accelerator-based facilities. The system provides information about beam characteristics and enables requested beam parameters to be achieved. The main parameters, such as beam energy, current, emittance, and beam position, must be diagnosed and controlled during the operation of an accelerator. Beam position monitors (BPMs) are an essential tool for diagnosing a system of accelerators. They are used to define the position of the beam traversing through the beam pipe at relativistic speed. These tools can be used to achieve the required beam quality as well as protecting the entire system …