2024
1.
Voigt, Jörg; Lieutenant, Klaus
An Instrument Suite for the HBS Journal Article
In: EPJ Web Conf., vol. 298, pp. 01004, 2024.
Links | BibTeX | Tags: HBS, HiCANS, Instrumentation
@article{refId4,
title = {An Instrument Suite for the HBS},
author = {Jörg Voigt and Klaus Lieutenant},
url = {https://doi.org/10.1051/epjconf/202429801004},
doi = {10.1051/epjconf/202429801004},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {EPJ Web Conf.},
volume = {298},
pages = {01004},
keywords = {HBS, HiCANS, Instrumentation},
pubstate = {published},
tppubtype = {article}
}
2.
Ma, Z.; Lieutenant, K.; Voigt, J.; Schrader, T. E.; Gutberlet, T.
Conceptual design of a macromolecular diffractometer for the Jülich high brilliance source Journal Article
In: Review of Scientific Instruments, vol. 95, no. 6, pp. 065104, 2024, ISSN: 0034-6748.
Abstract | Links | BibTeX | Tags: Diffractometer, HBS, HiCANS, Instrumentation
@article{10.1063/5.0203509,
title = {Conceptual design of a macromolecular diffractometer for the Jülich high brilliance source},
author = {Z. Ma and K. Lieutenant and J. Voigt and T. E. Schrader and T. Gutberlet},
url = {https://doi.org/10.1063/5.0203509},
doi = {10.1063/5.0203509},
issn = {0034-6748},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {Review of Scientific Instruments},
volume = {95},
number = {6},
pages = {065104},
abstract = {In this work, a concept for a neutron diffractometer for high-resolution macromolecular structures has been developed within the Jülich High Brilliance Neutron Source (HBS) project. The SELENE optics are adapted to the requirements of the instrument to achieve a tunable low background neutron beam at mm2 scale sample area. With the optimized guide geometry, a low background neutron beam can be achieved at the small sample area with tunable divergence and size. For the 1 × 1 mm2 sample, a flux of 1.10 × 107 n/s/cm2 for 0.38° divergence is calculated in the 2–4 Å wavelength range, which is about 84.6% of the flux at MaNDi of the high-power spallation source SNS at ORNL. Virtual neutron scattering experiments have been performed to demonstrate the instrument’s capabilities for studies of mm scale samples with large unit cells. Results of Vitesse simulations indicate that unit cell sizes of up to 200 Å are possible to be resolved with the proposed instrument.},
keywords = {Diffractometer, HBS, HiCANS, Instrumentation},
pubstate = {published},
tppubtype = {article}
}
In this work, a concept for a neutron diffractometer for high-resolution macromolecular structures has been developed within the Jülich High Brilliance Neutron Source (HBS) project. The SELENE optics are adapted to the requirements of the instrument to achieve a tunable low background neutron beam at mm2 scale sample area. With the optimized guide geometry, a low background neutron beam can be achieved at the small sample area with tunable divergence and size. For the 1 × 1 mm2 sample, a flux of 1.10 × 107 n/s/cm2 for 0.38° divergence is calculated in the 2–4 Å wavelength range, which is about 84.6% of the flux at MaNDi of the high-power spallation source SNS at ORNL. Virtual neutron scattering experiments have been performed to demonstrate the instrument’s capabilities for studies of mm scale samples with large unit cells. Results of Vitesse simulations indicate that unit cell sizes of up to 200 Å are possible to be resolved with the proposed instrument.
3.
Paulin, Mariano Andrés; Pechenizkiy, Ivan; Zakalek, Paul; Lieutenant, Klaus; Kämmerling, Peter; Steffens, Alexander; Kleines, Harald; Rücker, Ulrich; Gutberlet, Thomas; Gautrot, Sébastien; Menelle, Alain; Ott, Frédéric
Development of neutron reflectometry for a HiCANS: The HERMES instrument at the JULIC Neutron Platform Journal Article
In: EPJ Web Conf., vol. 298, pp. 01001, 2024.
Links | BibTeX | Tags: CANS, HBS, HiCANS, Instrumentation, Reflectometer
@article{refId1,
title = {Development of neutron reflectometry for a HiCANS: The HERMES instrument at the JULIC Neutron Platform},
author = {Mariano Andrés Paulin and Ivan Pechenizkiy and Paul Zakalek and Klaus Lieutenant and Peter Kämmerling and Alexander Steffens and Harald Kleines and Ulrich Rücker and Thomas Gutberlet and Sébastien Gautrot and Alain Menelle and Frédéric Ott},
url = {https://doi.org/10.1051/epjconf/202429801001},
doi = {10.1051/epjconf/202429801001},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {EPJ Web Conf.},
volume = {298},
pages = {01001},
keywords = {CANS, HBS, HiCANS, Instrumentation, Reflectometer},
pubstate = {published},
tppubtype = {article}
}
4.
Baggemann, J.; Gutberlet, T.; Zakalek, P.; Wolters, J.; Rücker, U.; Mauerhofer, E.; Li, J.; Ding, Q.; Loewenhoff, Th.; Dorow-Gerspach, D.; Bessler, Y.; Brückel, Th.
High power target for the High Brilliance Neutron Source Journal Article
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1069, pp. 169912, 2024, ISSN: 0168-9002.
Abstract | Links | BibTeX | Tags: HBS, HiCANS, High power, Neutron Target
@article{BAGGEMANN2024169912,
title = {High power target for the High Brilliance Neutron Source},
author = {J. Baggemann and T. Gutberlet and P. Zakalek and J. Wolters and U. Rücker and E. Mauerhofer and J. Li and Q. Ding and Th. Loewenhoff and D. Dorow-Gerspach and Y. Bessler and Th. Brückel},
url = {https://www.sciencedirect.com/science/article/pii/S0168900224008386},
doi = {https://doi.org/10.1016/j.nima.2024.169912},
issn = {0168-9002},
year = {2024},
date = {2024-01-01},
urldate = {2024-01-01},
journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
volume = {1069},
pages = {169912},
abstract = {The High Brilliance Neutron Source (HBS) is a High-Current Accelerator-driven Neutron Source (HiCANS) under development at Jülich Centre for Neutron Science - Forschungszentrum Jülich. The unique specifications of the HBS require a neutron target with a high neutron emission able to operate in vacuum with a 70MeV proton beam with 90mA peak current and 1.6% duty cycle leading to an average thermal load of 100kW. A tantalum target of 100cm2 irradiated area with an internal cooling structure which removes the heat quite homogeneously, provides a good compromise between low pressure and high heat transfer and ensures an homogeneous protons energy loss was designed and optimized by means of MCNP, CFD and FEM simulations. Such a target was successfully manufactured and its operational capability was demonstrated by operating it under a heat load of 1kWcm$^{−2}$ from an electron gun.},
keywords = {HBS, HiCANS, High power, Neutron Target},
pubstate = {published},
tppubtype = {article}
}
The High Brilliance Neutron Source (HBS) is a High-Current Accelerator-driven Neutron Source (HiCANS) under development at Jülich Centre for Neutron Science - Forschungszentrum Jülich. The unique specifications of the HBS require a neutron target with a high neutron emission able to operate in vacuum with a 70MeV proton beam with 90mA peak current and 1.6% duty cycle leading to an average thermal load of 100kW. A tantalum target of 100cm2 irradiated area with an internal cooling structure which removes the heat quite homogeneously, provides a good compromise between low pressure and high heat transfer and ensures an homogeneous protons energy loss was designed and optimized by means of MCNP, CFD and FEM simulations. Such a target was successfully manufactured and its operational capability was demonstrated by operating it under a heat load of 1kWcm$^{−2}$ from an electron gun.
2023
5.
Ding, Qi; Rücker, Ulrich; Zakalek, Paul; Baggemann, Johannes; Wolters, Jörg; Li, Jingjing; Beßler, Yannick; Gutberlet, Thomas; Brückel, Thomas; Natour, Ghaleb
An optimized microchannel Ta target for high-current accelerator-driven neutron sources Journal Article
In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1045, pp. 167508, 2023, ISSN: 0168-9002.
Abstract | Links | BibTeX | Tags: FLUKA, HBS, HiCANS, Microchannel cooling, Monte Carlo Simulations, Proton beam, Target
@article{Ding2023,
title = {An optimized microchannel Ta target for high-current accelerator-driven neutron sources},
author = {Qi Ding and Ulrich Rücker and Paul Zakalek and Johannes Baggemann and Jörg Wolters and Jingjing Li and Yannick Beßler and Thomas Gutberlet and Thomas Brückel and Ghaleb Natour},
url = {https://www.sciencedirect.com/science/article/pii/S0168900222008002},
doi = {https://doi.org/10.1016/j.nima.2022.167508},
issn = {0168-9002},
year = {2023},
date = {2023-01-01},
urldate = {2023-01-01},
journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
volume = {1045},
pages = {167508},
abstract = {An optimized neutron producing tantalum target with an optimized internal microchannel cooling was developed for a 70 MeV proton beam with a peak current of 100 mA, a duty cycle of 1.43% and an average power of 100 kW on a target surface area of 100 cm 2. In this work a target with microchannel cooling structure is described which matches with the proton’s energy to minimize hydrogen implantation and to produce energy deposition with optimum homogeneity inside the target to minimize the thermal stresses. For the purpose of getting an optimal target design, the investigations of energy deposition, proton fluence, the spatial distribution of (p, n) reactions and the spatial distribution of stopping protons of the target with different microchannel geometries were performed with the particle transport code FLUKA. The resulting design produces a homogeneous proton fluence and energy deposition without hot spots. Furthermore, only 4.4% of the impinging protons accumulate in the metal target, which significantly decreases the risk of hydrogen embrittlement and blistering.},
keywords = {FLUKA, HBS, HiCANS, Microchannel cooling, Monte Carlo Simulations, Proton beam, Target},
pubstate = {published},
tppubtype = {article}
}
An optimized neutron producing tantalum target with an optimized internal microchannel cooling was developed for a 70 MeV proton beam with a peak current of 100 mA, a duty cycle of 1.43% and an average power of 100 kW on a target surface area of 100 cm 2. In this work a target with microchannel cooling structure is described which matches with the proton’s energy to minimize hydrogen implantation and to produce energy deposition with optimum homogeneity inside the target to minimize the thermal stresses. For the purpose of getting an optimal target design, the investigations of energy deposition, proton fluence, the spatial distribution of (p, n) reactions and the spatial distribution of stopping protons of the target with different microchannel geometries were performed with the particle transport code FLUKA. The resulting design produces a homogeneous proton fluence and energy deposition without hot spots. Furthermore, only 4.4% of the impinging protons accumulate in the metal target, which significantly decreases the risk of hydrogen embrittlement and blistering.