M. Traxler
A5006713859- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Dark Matter and Cosmic Phenomena
- Advancements in PLL and VCO Technologies
- Particle Accelerators and Free-Electron Lasers
- Analog and Mixed-Signal Circuit Design
- Photocathodes and Microchannel Plates
- Planetary Science and Exploration
- Quantum Chromodynamics and Particle Interactions
- Space Exploration and Technology
- Astro and Planetary Science
- Embedded Systems Design Techniques
- Advanced X-ray and CT Imaging
- Radio Astronomy Observations and Technology
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Geophysics and Gravity Measurements
GSI Helmholtz Centre for Heavy Ion Research
2015-2024
GfK (Germany)
2021
Technical University of Munich
2020
Justus-Liebig-Universität Gießen
1998-2019
Moscow Engineering Physics Institute
2019
Petersburg Nuclear Physics Institute
2019
Kurchatov Institute
2019
University of Wuppertal
2016-2017
California Institute of Technology
1993
A high-resolution 48-Channel Time-to-Digital Converter (TDC) implemented in a general purpose Field Programmable Gate Array (FPGA) is presented. Dedicated carry chains of the FPGA are utilized for time interpolation purposes inside clock cycle. counter running at system frequency provides global stamp. These two values, along with channel number, stored readout. An extra effort was made to improve resolution beyond intrinsic cell delay chain as well achieve same on all 48 channels. Due large...
The TRB3 features four FPGA-based TDCs with < 20 ps RMS time precision between two channels and 256+4+4 in total. One central FPGA provides flexible trigger functionality GbE connectivity including powerful slow control. We present recent users' applications of this platform following the COME&KISS principle: successful test beamtimes at CERN (CBM), Jülich Mainz an discriminator board (PaDiWa), a charge-to-width FEE high dynamic range, read-out n-XYTER ASIC software for data unpacking TDC...
We present an analysis of the Lambda(1405) resonance produced in reaction p+p->Sigma^{pm}+pi^{mp}+K+p at 3.5 GeV kinetic beam energy measured with HADES GSI. The two charged decay channels -> Sigma^{\pm}+pi^{\mp} have been reconstructed for first time p+p collisions. efficiency and acceptance-corrected spectral shapes show a peak position clearly below 1400 MeV/c^2. find total production cross section sigma_{Lambda(1405)}=9.2 +- 0.9 0.7 +3.3-1.0 mub. its polar angle distribution suggests...
Abstract The former Outer Tracker of LHCb/CERN based on gas-filled straw tubes has been kindly donated to GSI for further use in experiments at and FAIR predominantly PANDA. This formidable gaseous tracking detector LHCb employed LHC Run 1 2 performed continuously above expectations until its replacement by a Scintillating Fibre address the challenges after upgrades LHC. Upon arrival GSI, whole tube is being stored gradually prepared various cases.
A 16-channel Time-to-Digital Converter (TDC) was implemented in a general purpose Field-Programmable Gate Array (FPGA). The fine time calculations are achieved by using the dedicated carry-chain lines. coarse counter defines stamp. In order to overcome negative effects of temperature and power supply dependency bin-by-bin calibration is applied. interval measurements done 2 channels. resolution channels calculated for 1 clock cycle minimum 10.3 ps RMS on two channels, yielding 7.3 (10.3...
In this paper the implementation of a 65 channel high precision Time-to-Digital Converter in single Field Programmable Gate Array (FPGA) is presented. The TDC applies interpolation method for time measurements. increased with Wave Union Launcher method. order to overcome minimum pulse width limitation semi-asynchronous stretcher implemented which has been verified allow measurement <; 500 ps. typical 7.2 ps RMS (14 on worst channel) channel. Additionally, 264 Channel Platform, Readout Board...
Abstract The STRings for Absorption length in Water (STRAW) are the first a series of pathfinders Pacific Ocean Neutrino Experiment (P-ONE), future large-scale neutrino telescope north-eastern Ocean. STRAW consists two $$150\,\mathrm {m}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>150</mml:mn> <mml:mspace /> <mml:mi>m</mml:mi> </mml:mrow> </mml:math> long mooring lines instrumented with optical emitters and detectors. pathfinder is designed to measure...
A new FPGA-TDC design implemented on a Virtex-4 FPGA is presented. The motivation of our work was to find the best possible time resolution that can be achieved this type FPGA. Since other implementations have been published we good basis for comparison. an improved version previous 10 ps RMS TDC [1] uses dedicated carry-chains interpolation purposes and able perform two time-measurements in single carry-chain per hit. In multiple (>;2) measurements made chain hit reaching ~4 between channels.
The RICH detectors of the existing HADES spectrometer and CBM experiment (to be built at FAIR) will use 64 channel Multi-Anode PMTs. We designed a complete set digitizing electronics, consisting analog digital front-end modules, power supply data concentrator cards plugged into backplane carrying 3 × 2 MAPMTs on front side, all readout modules backside. These contain necessary preamplifiers FPGA-based TDC as well trigger handling logic an optical transceiver. present electronics along with...
The PANDA detector at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) addresses fundamental questions of hadron physics. Experiments concerning charmonium spectroscopy, search hybrids glueballs interaction hidden open charm particles with nucleons nuclei will be performed antiproton beams impinging on hydrogen or nuclear targets. Cooled allow precision scan resonances formation experiments. momentum range beam between 1.5 GeV/c 15 tests predictions by...
The P̄ANDA experiment at FAIR will use DIRC detectors for the separation of hadrons. compactness detector requires image planes these to be placed inside magnetic field solenoid. Due this and other boundary conditions MCP-PMTs were identified as only suitable photon sensors. Until recently major obstacle an application in high rate experiments like serious aging problems which led damage photo-cathode a fast declining quantum efficiency integrated anode charge (IAC) increased. With new...
High precision time measurements are a crucial element in particle identification experiments, which likewise require pulse width information for Time-over-Threshold (ToT) and charge (correlated with width). In almost all of the FPGA-based TDC applications, implemented using two channels leading trailing edge individually. This method however, requires twice number resources. this paper we present latest improvements high (8 ps RMS) developed before [1], as well novel way measuring ToT...
With the rise of neutrino astronomy using large-volume detector arrays, calibration improvements optical media and photosensors have emerged as significant means to reduce systematics. To improve understanding volume its instrumentation, we developed an absolutely-calibrated, self-monitoring, isotropic, nanosecond, high-intensity light source called "Precision Optical Calibration Module" (POCAM). This, now third iteration, instrument was for application in IceCube Upgrade but, with a modular...
Micro-channel plate photomultiplier tubes (MCP-PMTs) are chosen in many applications that have to cope with strong magnetic fields. The DIRC detectors of the PANDA experiment plan employ them as they show excellent timing characteristics, radiation hardness, relatively low dark count rates and sufficient lifetime. This article mainly focuses on performance position reconstruction detected photons. Two different MCP-PMTs segmented anode geometries been tested fields strengths. variation their...
Abstract Objective. Ion computed tomography (iCT) is an imaging modality for the direct determination of relative stopping power (RSP) distribution within a patient’s body. Usually, this done by estimating path and energy loss ions traversing scanned volume utilising tracking system separate residual detector. This study, on other hand, introduces first experimental study novel iCT approach based time-of-flight (TOF) measurements, so-called Sandwich TOF-iCT concept, which in contrast to any...