T. Kögler
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View article: RANGE VERIFICATION IN COAXIAL GEOMETRY: FIRST EXPERIMENTAL RESULTS AT A CLINICAL PROTON THERAPY FACILITY USING A COMPACT PROMPT GAMMA-RAY DETECTOR
RANGE VERIFICATION IN COAXIAL GEOMETRY: FIRST EXPERIMENTAL RESULTS AT A CLINICAL PROTON THERAPY FACILITY USING A COMPACT PROMPT GAMMA-RAY DETECTOR Open
View article: Range verification in proton therapy with computational prompt gamma-ray spectroscopy: A Monte Carlo study
Range verification in proton therapy with computational prompt gamma-ray spectroscopy: A Monte Carlo study Open
View article: Machine-learning-based integration of temporal and spectral prompt gamma-ray information for proton range verification
Machine-learning-based integration of temporal and spectral prompt gamma-ray information for proton range verification Open
View article: Neutron transmission measurement of thick <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si43.svg" display="inline" id="d1e510"><mml:msup><mml:mrow/><mml:mrow><mml:mi>n</mml:mi><mml:mi>a</mml:mi><mml:mi>t</mml:mi></mml:mrow></mml:msup></mml:math>Fe targets at nELBE
Neutron transmission measurement of thick Fe targets at nELBE Open
View article: Proton bunch monitors for the clinical translation of prompt gamma-ray timing
Proton bunch monitors for the clinical translation of prompt gamma-ray timing Open
Objective . Prompt gamma-ray timing is an emerging technology in the field of particle therapy treatment verification. This system measures the arrival times of gamma rays produced in the patient body and uses the cyclotron radio frequency…
View article: Characterisation of a high granularity multi-channel prompt γ-ray detection system prototype for proton range verification based on the PETsys TOFPET2 ASIC
Characterisation of a high granularity multi-channel prompt γ-ray detection system prototype for proton range verification based on the PETsys TOFPET2 ASIC Open
Proton therapy requires range verification in order to exploit its full potential. One of the most promising approaches is to monitor prompt gamma-rays produced by nuclear interactions of the therapeutic particles in the patient tissues. A…
View article: Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification
Characterization of organic glass scintillator bars and their potential for a hybrid neutron/gamma ray imaging system for proton radiotherapy range verification Open
For accurate and simultaneous imaging of fast neutrons (FNs) and prompt gamma rays (PGs) produced during proton therapy, the selection of a highly performant detector material is crucial. In this work, a promising candidate material known …
View article: Photo-response of the $$N=Z$$ nucleus $$^{24}$$Mg
Photo-response of the $$N=Z$$ nucleus $$^{24}$$Mg Open
The electric E 1 and magnetic M 1 dipole responses of the $$N=Z$$ nucleus $$^{24}$$ Mg were investigated in an inelastic photon scattering experiment. The 13.0 MeV electrons, which were used to produce the unpolarised bremsstrahlung in t…
View article: Prompt gamma-ray spectroscopy in conjunction with the Monte Carlo Library Least Squares approach: Applications to range verification in proton therapy
Prompt gamma-ray spectroscopy in conjunction with the Monte Carlo Library Least Squares approach: Applications to range verification in proton therapy Open
Prompt Gamma-ray Spectroscopy (PGS) in conjunction with the Monte Carlo Library Least Squares (MCLLS) approach was investigated for the purposes of range monitoring in proton therapy through Monte Carlo simulations. Prompt gamma-rays are p…
View article: A hybrid multi-particle approach to range assessment-based treatment verification in particle therapy
A hybrid multi-particle approach to range assessment-based treatment verification in particle therapy Open
Particle therapy (PT) used for cancer treatment can spare healthy tissue and reduce treatment toxicity. However, full exploitation of the dosimetric advantages of PT is not yet possible due to range uncertainties, warranting development of…
View article: A hybrid multi-particle approach to range assessment-based treatment verification in particle therapy
A hybrid multi-particle approach to range assessment-based treatment verification in particle therapy Open
Particle therapy (PT) used for cancer treatment can spare healthy tissue and reduce treatment toxicity. However, full exploitation of the dosimetric advantages of PT is not yet possible due to range uncertainties, warranting development of…
View article: Multivariate statistical modelling to improve particle treatment verification: Implications for prompt gamma-ray timing
Multivariate statistical modelling to improve particle treatment verification: Implications for prompt gamma-ray timing Open
We present an improved method for in-vivo proton range verification by prompt gamma-ray timing based on multivariate statistical modelling. To this end, prompt gamma-ray timing distributions acquired during pencil beam irradiation of an ac…
View article: Neutron transmission measurements at nELBE
Neutron transmission measurements at nELBE Open
Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a…
View article: Fast neutron inelastic scattering from <sup>7</sup>Li
Fast neutron inelastic scattering from <sup>7</sup>Li Open
The inelastic scattering of fast neutrons from 7 Li nuclei was investigated at the nELBE neutron-time-of-flight facility. The photon production cross section of 478 keV γ -rays from the first excited state of 7 Li was determined by irradia…
View article: Measurement of the <sup>16</sup>O(n, <i>α</i>)<sup>13</sup>C cross-section using a Double Frisch Grid Ionization Chamber
Measurement of the <sup>16</sup>O(n, <i>α</i>)<sup>13</sup>C cross-section using a Double Frisch Grid Ionization Chamber Open
The 16 O(n, α ) 13 C reaction was proposed to be measured at the neutron time-of-flight (n_TOF) facility of CERN. To this purpose, a Double Frisch Grid Ionization Chamber (DFGIC) containing the oxygen atoms as a component in the counting g…
View article: Determination of the fast-neutron-induced fission cross-section of <sup>242</sup>Pu at <i>n</i>ELBE
Determination of the fast-neutron-induced fission cross-section of <sup>242</sup>Pu at <i>n</i>ELBE Open
The fast-neutron-induced fission cross section of 242 Pu was determined in the energy range of 0.5 MeV to 10MeV at the neutron time-of-flight facility n ELBE. Using a parallel-plate fission ionization chamber this quantity was measured rel…
View article: Temperature quenching in LAB based liquid scintillator
Temperature quenching in LAB based liquid scintillator Open
The effect of temperature changes on the light output of LAB based liquid scintillator is investigated in a range from –5 C to 30 °C with a-particles and electrons in a small scale setup. Two PMTs observe the scintillator liquid inside a c…
View article: Measurement of the prompt fissionγ-ray spectrum of <sup>242</sup>Pu
Measurement of the prompt fissionγ-ray spectrum of <sup>242</sup>Pu Open
The prompt γ -ray spectrum of fission fragments is important in understanding the dynamics of the fission process, as well as for nuclear engineering in terms of predicting the γ -ray heating in nuclear reactors. The γ -ray spectrum measur…
View article: Inelastic scattering of fast neutrons from<sup>56</sup>Fe
Inelastic scattering of fast neutrons from<sup>56</sup>Fe Open
The inelastic scattering of fast neutrons on 56Fe was investigated in different manners at the neutron time-of-flight facility nELBE. The scattering cross section was determined via the measurement of the γ-ray production and by means of a…
View article: Neutron transmission measurement for natural W at nELBE
Neutron transmission measurement for natural W at nELBE Open
\nKorea has developed a Helium Cooled Ceramic Reflector Test Blanket Module (Ko HCCR TBM) related to the ITER project. Tungsten is considered as a prime candidate for the plasma facing materials in fusion reactors, and for the structure ma…
View article: Fast-neutron-induced fission of<sup>242</sup>Pu at<i>n</i>ELBE
Fast-neutron-induced fission of<sup>242</sup>Pu at<i>n</i>ELBE Open
The fast neutron-induced fission cross section of 242Pu was determined in the range of 0.5 MeV to 10 MeV relative to 235U(n,f) at the neutron time-of-flight facility nELBE. The number of target nuclei was calculated by means of measuring t…
View article: E1 and M1 strength functions at low energy
E1 and M1 strength functions at low energy Open
\nWe report photon-scattering experiments using bremsstrahlung at the γELBE facility of Helmholtz-Zentrum Dresden-Rossendorf and using quasi-monoenergetic, polarized γ beams at the HIγS facility of the Triangle Universities Nuclear Laborat…
View article: Angular distribution measurement of gamma rays from inelastic neutron scattering on <sup>56</sup>Fe at the <i>n</i>ELBE time-of-flight facility
Angular distribution measurement of gamma rays from inelastic neutron scattering on <sup>56</sup>Fe at the <i>n</i>ELBE time-of-flight facility Open
Inelastic neutron scattering from 56Fe was studied at the nELBE time-of-flight facility. The incoming neutron energy ranges from 100 keV to 10 MeV in the fast neutron spectrum, where high precision nuclear data are needed. A detector setup…
View article: Measurement of the photodissociation of the deuteron at energies relevant to Big Bang nucleosynthesis
Measurement of the photodissociation of the deuteron at energies relevant to Big Bang nucleosynthesis Open
The photodissociation of the deuteron is a key reaction in Big Bang nucleosynthesis, but is only sparsely measured in the relevant energy range. To determine the cross section of the d(γ,n)p reaction we used pulsed bremsstrahlung and measu…
View article: Fast neutron measurements at the nELBE time-of-flight facility
Fast neutron measurements at the nELBE time-of-flight facility Open
\nThe compact neutron-time-of-flight facility nELBE at the superconducting electron accelerator ELBE of Helmholtz-Zentrum Dresden-Rossendorf has been rebuilt. A new enlarged experimental hall with a flight path of up to 10 m is available f…
View article: Investigation of dipole strength up to the neutron separation energy at<i>γ</i>ELBE
Investigation of dipole strength up to the neutron separation energy at<i>γ</i>ELBE Open
The bremsstrahlung facility at the ELBE accelerator offers the possibility to investigate dipole strength distributions up to the neutron-separation energies with photon up to 16 MeV in energy. The facility and various results for nuclides…