Kai-Thomas Brinkmann
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View article: Suppression of neutral-pion production in deep-inelastic scattering off nuclei with the CLAS detector
Suppression of neutral-pion production in deep-inelastic scattering off nuclei with the CLAS detector Open
We present the first threefold differential measurement for neutral-pion multiplicity ratios produced in semi-inclusive deep-inelastic electron scattering on carbon, iron, and lead nuclei normalized to deuterium from CLAS at Jefferson Lab.…
View article: Inclusive electron scattering in the resonance region off a hydrogen target with CLAS12
Inclusive electron scattering in the resonance region off a hydrogen target with CLAS12 Open
Inclusive electron scattering cross sections off a hydrogen target at a beam energy of 10.6 GeV have been measured with data collected from the CLAS12 spectrometer at Jefferson Laboratory. These first absolute cross sections from CLAS12 co…
View article: Performance of the DAQ system of the PANDA Micro-Vertex Detector
Performance of the DAQ system of the PANDA Micro-Vertex Detector Open
The Micro-Vertex Detector (MVD) is the innermost subdetector of the PANDA (anti-Proton ANnihilations at DArmstadt) detector at FAIR. Its microstrip sensors are read out by custom front-end electronics called ToASt (Torino ASIC for Strip re…
View article: Characterization of the radiation tolerant ToASt ASIC for the readout of the PANDA MVD strip detector
Characterization of the radiation tolerant ToASt ASIC for the readout of the PANDA MVD strip detector Open
The ToASt ASIC is a 64-channel integrated circuit developed for the readout of the Silicon strip detector project designed to be placed in the Micro-Vertex Detector of the PANDA experiment. ToASt is implemented in a commercial 110 nm CMOS …
View article: The data acquisition system for the PANDA Micro-Vertex Detector
The data acquisition system for the PANDA Micro-Vertex Detector Open
The PANDA (antiProton ANnihilation at DArmstadt) experiment will study the strong interaction in annihilation reactions between an antiproton beam and a stationary cluster jet target. The PANDA detector will be composed of several sub-dete…
View article: Beam spin asymmetry measurements of deeply virtual π0 production with CLAS12
Beam spin asymmetry measurements of deeply virtual π0 production with CLAS12 Open
View article: Measurement of polarization observables $$\textbf{T}$$, $${\textbf{P}}$$, and $${\textbf{H}}$$ in $$\mathbf {\pi ^0}$$ and $$\mathbf {\eta }$$ photoproduction off quasi-free nucleons
Measurement of polarization observables $$\textbf{T}$$, $${\textbf{P}}$$, and $${\textbf{H}}$$ in $$\mathbf {\pi ^0}$$ and $$\mathbf {\eta }$$ photoproduction off quasi-free nucleons Open
View article: Measurement of the helicity asymmetry $${\mathbb {E}}$$ for the $$\vec {\gamma }\vec {p} \rightarrow p \pi ^0$$ reaction in the resonance region
Measurement of the helicity asymmetry $${\mathbb {E}}$$ for the $$\vec {\gamma }\vec {p} \rightarrow p \pi ^0$$ reaction in the resonance region Open
View article: First Measurement of Hard Exclusive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi mathvariant="normal">Δ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> Electroproduction Beam-Spin Asymmetries off the Proton
First Measurement of Hard Exclusive Electroproduction Beam-Spin Asymmetries off the Proton Open
The polarized cross-section ratio σ_{LT^{'}}/σ_{0} from hard exclusive π^{-}Δ^{++} electroproduction off an unpolarized hydrogen target has been extracted based on beam-spin asymmetry measurements using a 10.2 GeV/10.6 GeV incident electro…
View article: A multidimensional study of the structure function ratio <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msub><mml:mrow><mml:mi>σ</mml:mi></mml:mrow><mml:mrow><mml:mi>L</mml:mi><mml:msup><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:msub><mml:mo stretchy="false">/</mml:mo><mml:msub><mml:mrow><mml:mi>σ</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msub></mml:math> from hard exclusive π+ electro-production off protons in the GPD regime
A multidimensional study of the structure function ratio from hard exclusive π+ electro-production off protons in the GPD regime Open
View article: PWO based electromagnetic calorimetry to operate at a low temperature
PWO based electromagnetic calorimetry to operate at a low temperature Open
The degradation of the optical transmittance under ionising radiation of the scintillation crystal in the scintillation spectral range leads to the losses of the light output, which results in the deterioration of the energy resolution and…
View article: Observation of a structure in the M$_{p\eta}$ invariant mass distribution near 1700 MeV in the $\mathbf{\gamma p \rightarrow p \pi^0 \eta} $ reaction
Observation of a structure in the M$_{p\eta}$ invariant mass distribution near 1700 MeV in the $\mathbf{\gamma p \rightarrow p \pi^0 \eta} $ reaction Open
The reaction $\gamma p \rightarrow p \pi^0 \eta$ has been studied with the
CBELSA/TAPS detector at the electron stretcher accelerator ELSA in Bonn for
incident photon energies from threshold up to 3.1 GeV. This paper has been
motivated by …
View article: Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab
Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab Open
View article: Multipurpose Ce-doped Ba-Gd silica glass scintillator for radiation measurements
Multipurpose Ce-doped Ba-Gd silica glass scintillator for radiation measurements Open
View article: Deeply virtual Compton scattering using a positron beam in Hall-C at\n Jefferson Lab
Deeply virtual Compton scattering using a positron beam in Hall-C at\n Jefferson Lab Open
We propose to use the High Momentum Spectrometer of Hall C combined with the\nNeutral Particle Spectrometer (NPS) to perform high precision measurements of\nthe Deeply Virtual Compton Scattering (DVCS) cross section using a beam of\npositr…
View article: Multidimensional, high precision measurements of beam single spin\n asymmetries in semi-inclusive $\\pi^{+}$ electroproduction off protons in the\n valence region
Multidimensional, high precision measurements of beam single spin\n asymmetries in semi-inclusive $\\pi^{+}$ electroproduction off protons in the\n valence region Open
High precision measurements of the polarized electron beam-spin asymmetry in\nsemi-inclusive deep inelastic scattering (SIDIS) from the proton have been\nperformed using a 10.6~GeV incident electron beam and the CLAS12 spectrometer\nat Jef…
View article: Measurement of PET isotope production cross sections for protons and carbon ions on carbon and oxygen targets for applications in particle therapy range verification
Measurement of PET isotope production cross sections for protons and carbon ions on carbon and oxygen targets for applications in particle therapy range verification Open
Measured cross sections for the production of the PET isotopes , and from carbon and oxygen targets induced by protons (40–220 ) and carbon ions (65–430 ) are presented. These data were obtained via activation measurements of irradiated gr…
View article: Physics with Positron Beams at Jefferson Lab 12 GeV
Physics with Positron Beams at Jefferson Lab 12 GeV Open
Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context of the Hadronic Physics program at the Jefferson Laboratory …
View article: Measurement of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts></mml:math> charge- and mass-changing cross sections on H, C, O, and Si targets in the energy range 70–220 MeV/u for radiation transport calculations in ion-beam therapy
Measurement of charge- and mass-changing cross sections on H, C, O, and Si targets in the energy range 70–220 MeV/u for radiation transport calculations in ion-beam therapy Open
Measured charge- and mass-changing cross sections for the systems He4+C12, He4+O16, He4+Si28, and He4+H1 in the energy range 70–220MeV/u are presented. The cross sections were obtained via the attenuation method where a ΔE-E scintillator t…
View article: Multifunctional scintillation materials of the garnet structure for non-homogeneous detecting cells of electromagnetic calorimeters to operate in a harsh irradiation environment
Multifunctional scintillation materials of the garnet structure for non-homogeneous detecting cells of electromagnetic calorimeters to operate in a harsh irradiation environment Open
The scintillator gadolinium aluminium gallium garnet (Gd3Al2Ga3O12, GAGG) was found to be an excellent material for application in non-homogeneous detecting cells for future calorimeters, operating in a harsh irradiation environment. GAGG,…
View article: Performance of DSB – a new glass and glass ceramic as scintillation material for future calorimetry
Performance of DSB – a new glass and glass ceramic as scintillation material for future calorimetry Open
The application of crystalline materials in ionizing radiation detectors has played a crucial role in the discovery of the properties of matter. However, the experiences gathered at high intensity machines such as the LHC have indicated th…
View article: Development of a SiPM-based readout-module for the characterization of various scintillator materials
Development of a SiPM-based readout-module for the characterization of various scintillator materials Open
In this paper we discuss a general approach to use SiPMs in different electrical configurations in combination with numerous scintillator materials for applications in nuclear instrumentation, such as calorimetry and timing. The "hybrid" c…
View article: Ce-doped Gd${}_{3}$Al${}_{2}$Ga${}_{3}$O${}_{12}$ scintillator for compact, effective and high time resolution detector of the fast neutrons
Ce-doped Gd${}_{3}$Al${}_{2}$Ga${}_{3}$O${}_{12}$ scintillator for compact, effective and high time resolution detector of the fast neutrons Open
Gadolinium-aluminum-gallium garnet Gd${}_{3}$Al${}_{2}$Ga${}_{3}$O${}_{12}$:Ce scintillator is demonstrated to be an excellent scintillation material for detector of fast neutrons for the first time. Moreover, its application allows to obt…
View article: Missing-mass spectroscopy of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi>d</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math> reaction near the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>η</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math>-meson production threshold
Missing-mass spectroscopy of the reaction near the -meson production threshold Open
Excitation-energy spectra of C-11 nuclei near the eta'-meson production threshold have been measured by missing-mass spectroscopy using the C-12(p,d) reaction. A carbon target has been irradiated with a 2.5 GeV proton beam supplied by the …
View article: Impact of Non-Uniformity in Light Collection on the Energy Resolution of the PANDA Electromagnetic Calorimeter at Photon Energies Below 1 GeV
Impact of Non-Uniformity in Light Collection on the Energy Resolution of the PANDA Electromagnetic Calorimeter at Photon Energies Below 1 GeV Open
The electromagnetic calorimeter (EMC) of the PANDA detector at the future FAIR facility comprises more than 15,000 lead tungstate (PWO) crystals. The barrel part will consist of 11 crystal geometries with different degree of tapering, whic…
View article: Progress in the Development of the Lead Tungstate Crystals for EM-Calorimetry in High-Energy Physics
Progress in the Development of the Lead Tungstate Crystals for EM-Calorimetry in High-Energy Physics Open
Even at present time there is a strong interest and demand for high quality lead tungstate crystals (PbWO4, PWO) for electromagnetic (EM) calorimetry. PWO is implemented into the EM calorimeter of the CMS-ECAL detector at LHC [1] and requi…
View article: Study of properties of the plastic scintillator EJ-260 under irradiation with 150 MeV protons and 1.2MeV gamma-rays
Study of properties of the plastic scintillator EJ-260 under irradiation with 150 MeV protons and 1.2MeV gamma-rays Open
One of the most critical aspects for the application of a scintillation material in high energy physics is the degradation of properties of the material in an environment of highly ionizing particles in particular due to hadrons. There are…
View article: Search for η′ Mesic Nuclei in GSI/FAIR
Search for η′ Mesic Nuclei in GSI/FAIR Open
View article: Recoil polarization measurements
Recoil polarization measurements Open
\nPolarization observables in photon-induced meson production off nucleons have long been recognized to hold the promise of a detailed understanding of the excited states in the excitation spectrum of the nucleon. Photon beam and proton ta…
View article: In-medium properties of mesons
In-medium properties of mesons Open
\nIn the project B.4, the modification of meson properties (mass, width) in a nuclear medium has been studied in photoproduction of mesons off nuclear targets. This work has been motivated by theoretical expectations of in-medium modificat…