A5006807508- Particle accelerators and beam dynamics
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Atomic and Subatomic Physics Research
- Cosmology and Gravitation Theories
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Radiation Therapy and Dosimetry
- Dynamics and Control of Mechanical Systems
- Atomic and Molecular Physics
- Astrophysics and Cosmic Phenomena
- Full-Duplex Wireless Communications
- solar cell performance optimization
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Control and Stability of Dynamical Systems
- Electromagnetic Simulation and Numerical Methods
- Computational Physics and Python Applications
- Control and Dynamics of Mobile Robots
- Plasma Diagnostics and Applications
Istanbul University-Cerrahpaşa
2021-2024
Istinye University
2021-2024
Istanbul University
2013-2022
Boğaziçi University
2022
Feza Gürsey Institute
2022
Dumlupinar University
2022
Yıldız Technical University
2022
Marmara University
2022
University of California, Irvine
2022
Istanbul Bilgi University
2019
A bstract We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part CERN Solar Telescope (CAST), searching for axion dark matter in 34.67 μ eV mass range. radio frequency cavity consisting 5 sub-cavities coupled by inductive irises took physics data inside CAST dipole magnet first time using this filter-like haloscope geometry. An exclusion limit with 95% credibility level on axion-photon coupling constant g aγ ≳ 4 × 10 − 13 GeV 1 over range 34 ....
The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in 19.74 $\mu$eV to 22.47 mass range. detection concept follows Sikivie haloscope principle, where Dark Matter convert into photons within a resonator immersed magnetic field. is an array of four individual rectangular cavities inserted strong phase-matched maximize sensitivity. Here we report on data acquired 4124 h from 2019 2021. Each cavity equipped with fast frequency tuning mechanism...
Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope has been searching via their back conversion to x-ray photons in 9-T 10-m long magnet directed toward Sun. We report on an extended run with International Observatory pathfinder detector, doubling previous exposure time. detector was operated xenon-based gas mixture part of new run, providing technical insights future configurations. No counts...
We report on a first measurement with sensitive opto-mechanical force sensor designed for the direct detection of coupling real chameleons to matter. These dark energy candidates could be produced in Sun and stream unimpeded Earth. The KWISP detector installed CAST axion search experiment at CERN looks tiny displacements thin membrane caused by mechanical effect solar chameleons. are detected Michelson interferometer homodyne readout scheme. benefits from focusing action ABRIXAS X-ray...
Abstract The KAHVE Laboratory, at Boğaziçi University, Istanbul, Turkey is home to an educational proton linac project. beam will originate from a 20 keV H+ source and be delivered two module Radio Frequency Quadrupole (RFQ) operating 800 MHz via low energy transport (LEBT) line. Currently, the design phase being over, commissioning stability tests are ongoing for beamline which already produced installed except RFQ manufactured. This work summarizes design, production test phases of ion...
Stabilization at the top vertical position of an inverted pendulum on a cart, while bringing cart to desired position, by applying force is considered. This underactuated mechanical system for which main nonlinear control scheme, feedback linearization, fails. A single law producing using velocity, and velocity developed shown, numerical experiments, asymptotically stabilize its origin, although no attemp made proof global stability.
Abstract High gradient accelerator injectors have been widely studied throughout the world-leading facilities. The demand for high frequency cavities has led Detector, Accelerator and instrumentation laboratory (KAHVELab) in Istanbul to deploy a four-vane Radio Frequency Quadrupole (RFQ) operating at 800 MHz accelerate 20 keV protons 2 MeV. from microwave discharge ion source are transversely matched RFQ via an optimized Low Energy Beam Transport (LEBT) line which also contains integrated...
It has been previously advocated that the presence of daily and annual modulations axion flux on Earth's surface may dramatically change strategy searches. The arguments were based so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain similarity visible cosmological densities $\Omega_{\rm dark}\sim \Omega_{\rm visible}$. In this framework, population galactic axions with mass $ 10^{-6} {\rm eV}\lesssim m_a\lesssim 10^{-3}{\rm eV}$ velocity $\langle...
A compact, remote controlled, cost efficient diagnostic station has been developed to measure the charge, profile and emittance for low energy proton beams. It installed tested in beam line of Project Prometheus at SANAEM Turkish Atomic Energy Authority.
A 1–5 MeV proton beamline is being built by the Turkish Atomic Energy Authority in collaboration with a number of graduate students from different universities. The primary goal project, to acquire design ability and manufacturing capability all components locally. SPP will be an accelerator beam diagnostics test facility it also serve detector development community its low current. This paper discusses construction RF power supply transmission line such as waveguide converters circulator....
We report on a first measurement with sensitive opto-mechanical force sensor designed for the direct detection of coupling real chameleons to matter. These dark energy candidates could be produced in Sun and stream unimpeded Earth. The KWISP detector installed CAST axion search experiment at CERN looks tiny displacements thin membrane caused by mechanical effect solar chameleons. are detected Michelson interferometer homodyne readout scheme. benefits from focusing action ABRIXAS X-ray...
KAHVE Laboratory, a particle detector, accelerator, and instrumentation research laboratory located at Boğaziçi University Kandilli Campus area Istanbul, is currently working on the design of RFQ operating 800 MHz that will accelerate proton beam up to 2 MeV. As first part this linear Microwave Discharge Ion Source 2.45 GHz frequency including 20 keV electrode extraction system has been designed, produced, tested generate hydrogen plasma extract beams from medium. To transfer cavity, Low...
Boğaziçi Üniversitesi KAHVE Laboratuvarı’nda prototip termiyonik electron tabancası, endüstriyel elektron demeti uygulamalarında deneyim kazanmak amacıyla tasarlanmış ve üretilmiştir. Elektron tabancası tungsten filament, Wehnelt bardağı, Faraday bardağı solenoid bileşenlerinden oluşmaktadır. benzetimleri IBSimu isimli program kullanılarak gerçekleştirilmiştir. Üretimi gerçekleştirilen 20 kV potansiyel 3 mA’e kadar demet akımında çalışmaktadır. Bu çalışma, tabancasının üretimi sırasında...
The design and production studies of the proton beamline SPP, which aims to acquire know-how on accelerator technology thru development man power serves as particle technologies test bench, continue at TAEK-SANAEM a multi-phase project. For first phase, 20 keV protons will be accelerated 1.3 MeV by single piece RFQ. Currently, beam current stability tests are ongoing for Inductively Coupled Plasma ion source. measured magnetic field maps Low Energy Beam Transport solenoids being used...
High gradient accelerator injectors have been widely studied throughout the world-leading facilities. The demand for high frequency cavities led Detector, Accelerator and instrumentation laboratory (KAHVELab) in Istanbul to deploy a four-vane Radio Frequency Quadrupole (RFQ) operating at 800~MHz accelerate 20~keV protons 2~MeV. from microwave discharge ion source are transversely matched RFQ via an optimized Low Energy Beam Transport (LEBT) line which also contains integrated measurement...
An 800 MHz RF circulator and transmission line project has recently started at the newly commissioned Kandilli Detector, Accelerator Instrumentation (KAHVE) Laboratory Boğaziçi University. The aims are to design, build construct an in Turkey for high power frequency applications. consists of 8 elements: generator with 60 kW (klystron), klystron waveguide converter, waveguides, E H bends, 3-port coaxial converter transmit a pillbox cavity. Design studies details ongoing will be presented.