Hans Steiger
A5058589297- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Management of metastatic bone disease
- Nuclear reactor physics and engineering
- Atmospheric Ozone and Climate
- Radiopharmaceutical Chemistry and Applications
- Muon and positron interactions and applications
- Glioma Diagnosis and Treatment
- Head and Neck Surgical Oncology
- Meningioma and schwannoma management
- Quantum Chromodynamics and Particle Interactions
- CCD and CMOS Imaging Sensors
- Ocular Oncology and Treatments
- Environmental Monitoring and Data Management
- International Science and Diplomacy
- Cervical and Thoracic Myelopathy
- Scientific Measurement and Uncertainty Evaluation
- Brain Metastases and Treatment
- Superconducting and THz Device Technology
Johannes Gutenberg University Mainz
2021-2025
Technical University of Munich
2016-2025
Université Libre de Bruxelles
2022-2024
Pontifical Catholic University of Rio de Janeiro
2022-2024
Universidade Estadual de Londrina
2022-2024
A. Alikhanyan National Laboratory
2022-2024
Beijing Normal University
2022-2024
China Institute of Atomic Energy
2024
China Academy of Space Technology
2023-2024
Federico Santa María Technical University
2022-2023
Abstract New developments in liquid scintillators, high-efficiency, fast photon detectors, and chromatic sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov scintillation signals. Such could reconstruct particle direction species using light while also having excellent energy resolution low threshold of scintillator detector. Situated deep underground, utilizing new techniques computing reconstruction, this achieve unprecedented...
Abstract Future neutrino experiments at low energies such as JUNO or Theia will use large volume homogeneous liquid scintillator detectors. The optical attenuation length of the is uttermost importance for successful realization these experiments. At TU Munich a new spectrometer (Precision Attenuation Length Measurement (PALM)) has been set up in order to measure light liquids which can be used types around 100 m wavelength region between 400 nm and 1000 nm. setup features an imaging system...
EOS is a technology demonstrator, designed to explore the capabilities of hybrid event detection technology, leveraging both Cherenkov and scintillation light simultaneously. With fiducial mass four tons, operate in high-precision regime, with sufficient size utilize time-of-flight information for full reconstruction, flexibility demonstrate range cutting edge technologies, simplicity design facilitate potential future deployment at alternative sites. Results from can inform neutrino...
Objective: Five-aminolevulinic acid (5-ALA)-induced porphyrins in malignant gliomas are potent photosensitizers. Promising results of ALA-PDT (photodynamic therapy) recurrent glioblastomas have been published. Recently, 5-ALA-induced fluorescence was studied meningioma surgery. Here, we present an experimental study vitro model primary cell lines. Methods: We processed native tumor material obtained intra-operatively within 24 h for culture. Epithelial membrane antigen (EMA)...
Slow organic and water-based liquid scintillators are currently developed characterized for future large-scale neutrino experiments such as Theia. One goal of these new is to separate Cherenkov light from scintillation in a detector. By this, the spatial information improved while keeping excellent energy resolution proven mixtures. This contribution focuses on time profile studies novel scintillators. We performed scintillator characterization using pulsed neutron beam at CN accelerator...
Background Metabolic imaging technologies such as 5-aminolevulinic acid (ALA) fluorescence-guided resection and positron-emission tomography (PET) have improved glioma surgery within the last decade. At present, these tools are not routinely used in meningioma surgery. Objective We present a case of complex-shaped, recurrent skull base where 5-ALA fluorescence-guidance (18)F-fluoroethyltyrosine (FET)-PET-imaging facilitated surgical resection. Material Methods The patient underwent via...
Abstract Water-based Liquid Scintillator (WbLS) is a novel detector medium for particle physics experiments. Applications range from the use as hybrid Cherenkov/scintillation target in low-energy and accelerator neutrino experiments to large-volume neutron vetoes dark matter detectors. Here we present WbLS based on well-known components (the surfactant Triton-X, fluor PPO vitamin C long-term stability), with which new recipe was developed result subjected thorough characterization of its...
Abstract One of the most promising approaches for next generation neutrino experiments is realization large hybrid Cherenkov/scintillation detectors made possible by recent innovations in photodetection technology and liquid scintillator chemistry. The development a potentially suitable future detector with particularly slow light emission discussed present publication. This cocktail compared respect to its fundamental characteristics (scintillation efficiency, transparency, time profile...
Abstract The Taishan Antineutrino Observatory (TAO or JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino (JUNO). Located near reactor Nuclear Power Plant, TAO will measure antineutrino energy spectrum with an unprecedented resolution $$<2\%$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo><</mml:mo> <mml:mn>2</mml:mn> <mml:mo>%</mml:mo> </mml:mrow> </mml:math> at 1 MeV. Energy calibration critical to achieve such high resolution....
The Serappis (SEarch for RAre PP-neutrinos In Scintillator) project aims at a precision measurement of the flux solar $pp$ neutrinos on few-percent level. Such will be relevant contribution to study neutrino oscillation parameters and sensitive test luminosity constraint. concept relies small organic liquid scintillator detector ($\sim$20 m$^3$) with excellent energy resolution ($\sim$2.5 % 1 MeV), low internal background sufficient shielding from surrounding radioactivity. This can achieved...
Future neutrino experiments at low energies such as JUNO or THEIA will use large volume homogeneous liquid scintillator detectors. The optical attenuation length of the is uttermost importance for successful realization these experiments. At TU Munich a new spectrometer (Precision Attenuation Length Measurement (PALM)) has been set up in order to measure light liquids which can be used types around 100 m wavelength region between 400 nm and 1000 nm. setup features an imaging system with long...
See also: Fluorescence-Guided Resection of Spinal Metastases Malignant Glioma – Report 2 CasesCent Eur Neurosurg 2011; 72(S 01): e12-e12DOI: 10.1055/s-0030-1268499
The formation of the Earth remains an epoch with mysterious puzzles extending to our still incomplete understanding planet's potential origin and bulk composition. Direct confirmation Earth's internal heat engine was accomplished by successful observation geoneutrinos originating from uranium (U) thorium (Th) progenies, manifestations natural radioactivity dominated potassium (40K) decay chains (238U) (232Th). This radiogenic energy output is critical planetary dynamics must be accurately...
The Taishan Antineutrino Observatory (TAO or JUNO-TAO) is a satellite detector for the Jiangmen Underground Neutrino (JUNO). JUNO aims at simultaneously probing two main frequencies of three-flavor neutrino oscillations, as well their interference related to mass ordering, distance ~53 km from powerful nuclear reactor complexes in China. Located near Taishan-1 reactor, TAO independently measures antineutrino energy spectrum with unprecedented resolution. experiment will realize detection...
With the publication of European Organization for Research and Treatment Cancer/National Cancer Information Center (EORTC/NCIC) trial, concomitant radiochemotherapy followed by intermittent chemotherapy became new treatment standard patients with primary glioblastoma. Eight years after widespread introduction this protocol, it is interest to investigate whether has been established in daily neuro-oncologic practice. We were particularly interested its practicality within a neurosurgical...
<b>Introduction</b> Physiological cervical intervertebral motion inherently induces a neuroforaminal volume change. Integration of an artificial component within this kinematic system may cause neuroforamina to lose their ability for continuous and instantaneous adaptation, inducing foraminal stenosis. The purpose the current study is virtually simulate newly developed total disc replacement (TDR) evaluate dimensions at rest during motion. <b>Materials Methods</b> In three-dimensional...
Plastic scintillators are widely used in particle physics experiments. Additive manufacturing techniques allow the production of parts with free shapes and, depending on application, direct integration other detector components. This opens up new possibilities for development of, example, trigger and veto systems or 3D-segmented detectors like high-granularity calorimeters utilizing structured diffuse reflective subdivisions. ARBURG Freeforming (APF) devices feature processing several...
Abstract Fast neutron beams (E $$_n > $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mrow/> <mml:mi>n</mml:mi> </mml:msub> <mml:mo>></mml:mo> </mml:mrow> </mml:math> 1 MeV) are of relevance for many scientific and industrial applications. This paper explores fast production using a TANDEM accelerator at the Legnaro National Laboratories, via an energetic ion beam (90 MeV $$^{14}N$$ <mml:msup> <mml:mn>14</mml:mn> </mml:msup> <mml:mi>N</mml:mi> )...
One of the most promising approaches for next generation neutrino experiments is realization large hybrid Cherenkov/scintillation detectors made possible by recent innovations in photodetection technology and liquid scintillator chemistry. The development a potentially suitable future detector with particularly slow light emission discussed present publication. This cocktail compared respect to its fundamental characteristics (scintillation efficiency, transparency, time profile emission)...