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Articles de revues sur le sujet « Paul Scherrer Institut »

Auteur : Grafiati

Publié le 14 mars 2023

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1

Wagner, W. "Paul-Scherrer-Institut baut Neutronenquelle." Physik Journal 47, no. 6 (1991): 548. http://dx.doi.org/10.1002/phbl.19910470620.

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Böni, Peter. "NOP99 workshop held at Paul Scherrer Institut." Neutron News 11, no. 2 (2000): 11. http://dx.doi.org/10.1080/10448630008233724.

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IWASE, Kazuyuki. "Short stay for research at Paul Scherrer Institut." Denki Kagaku 89, no. 4 (2021): 396. http://dx.doi.org/10.5796/denkikagaku.21-ot0046.

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Auzelyte, Vaida. "Extreme ultraviolet interference lithography at the Paul Scherrer Institut." Journal of Micro/Nanolithography, MEMS, and MOEMS 8, no. 2 (2009): 021204. http://dx.doi.org/10.1117/1.3116559.

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Ferrari, Eugenio, Rasmus Ischebeck, Martin Bednarzik, et al. "The ACHIP experimental chambers at the Paul Scherrer Institut." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 907 (November 2018): 244–47. http://dx.doi.org/10.1016/j.nima.2018.02.112.

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Blau, B., K. N. Clausen, S. Gvasaliya, et al. "The Swiss Spallation Neutron Source SINQ at Paul Scherrer Institut." Neutron News 20, no. 3 (2009): 5–8. http://dx.doi.org/10.1080/10448630903120387.

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Conder, Kazimierz, Albert Furrer, and Ekaterina Pomjakushina. "A Retrospective of Materials Synthesis at the Paul Scherrer Institut (PSI)." Condensed Matter 5, no. 4 (2020): 55. http://dx.doi.org/10.3390/condmat5040055.

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Morgano, M., S. Peetermans, E. H. Lehmann, T. Panzner, and U. Filges. "Neutron imaging options at the BOA beamline at Paul Scherrer Institut." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 754 (August 2014): 46–56. http://dx.doi.org/10.1016/j.nima.2014.03.055.

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Rosas, Sara, Francesca M. Belosi, Nicola Bizzocchi, et al. "Benchmarking a commercial proton therapy solution: The Paul Scherrer Institut experience." British Journal of Radiology 93, no. 1107 (2020): 20190920. http://dx.doi.org/10.1259/bjr.20190920.

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Objective: For the past 20 years, Paul Scherrer Institut (PSI) has treated more than 1500 patients with deep-seated tumors using PSI-Plan, an in-house developed treatment planning system (TPS) used for proton beam scanning proton therapy, in combination with its home-built gantries. The goal of the present work is to benchmark the performance of a new TPS/Gantry system for proton therapy centers which have established already a baseline standard of care. Methods and materials: A total of 31 cases (=52 plans) distributed around 7 anatomical sites and 12 indications were randomly selected and re

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Lass, Jakob, Henrik Jacobsen, Kristine M. L. Krighaar, et al. "Commissioning of the novel Continuous Angle Multi-energy Analysis spectrometer at the Paul Scherrer Institut." Review of Scientific Instruments 94, no. 2 (2023): 023302. http://dx.doi.org/10.1063/5.0128226.

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We report on the commissioning results of the cold neutron multiplexing secondary spectrometer CAMEA (Continuous Angle Multi-Energy Analysis) at the Swiss Spallation Neutron Source at the Paul Scherrer Institut, Switzerland. CAMEA is optimized for efficient data acquisition of scattered neutrons in the horizontal scattering plane, allowing for detailed and rapid mapping of low-energy excitations under extreme sample environment conditions.

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Tremsin, A. S., M. Morgano, T. Panzner, et al. "High resolution neutron imaging capabilities at BOA beamline at Paul Scherrer Institut." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 784 (June 2015): 486–93. http://dx.doi.org/10.1016/j.nima.2014.09.026.

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Gotta, D. "Precision Measurements in Pionic Hydrogen Paul Scherrer Institut, CH-5232 Villigen, Switzerland." Physica Scripta T104, no. 1 (2003): 94. http://dx.doi.org/10.1238/physica.topical.104a00094.

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Lauss, B. "Commissioning of the new high-intensity ultracold neutron source at the Paul Scherrer Institut." Journal of Physics: Conference Series 312, no. 5 (2011): 052005. http://dx.doi.org/10.1088/1742-6596/312/5/052005.

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Bauer, Günter S. "Operation and development of the new spallation neutron source SINQ at the Paul Scherrer Institut." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 139, no. 1-4 (1998): 65–71. http://dx.doi.org/10.1016/s0168-583x(97)00956-7.

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Trtik, Pavel, Jan Hovind, Christian Grünzweig, et al. "Improving the Spatial Resolution of Neutron Imaging at Paul Scherrer Institut – The Neutron Microscope Project." Physics Procedia 69 (2015): 169–76. http://dx.doi.org/10.1016/j.phpro.2015.07.024.

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Trtik, Pavel, and Eberhard H. Lehmann. "Progress in High-resolution Neutron Imaging at the Paul Scherrer Institut - The Neutron Microscope Project." Journal of Physics: Conference Series 746 (September 2016): 012004. http://dx.doi.org/10.1088/1742-6596/746/1/012004.

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Tinti, Gemma, Erik Fröjdh, Eric van Genderen, et al. "Electron crystallography with the EIGER detector." IUCrJ 5, no. 2 (2018): 190–99. http://dx.doi.org/10.1107/s2052252518000945.

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Electron crystallography is a discipline that currently attracts much attention as method for inorganic, organic and macromolecular structure solution. EIGER, a direct-detection hybrid pixel detector developed at the Paul Scherrer Institut, Switzerland, has been tested for electron diffraction in a transmission electron microscope. EIGER features a pixel pitch of 75 × 75 µm2, frame rates up to 23 kHz and a dead time between frames as low as 3 µs. Cluster size and modulation transfer functions of the detector at 100, 200 and 300 keV electron energies are reported and the data quality is demonst

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GOTTA, DETLEV. "PIONIC HYDROGEN." International Journal of Modern Physics A 20, no. 02n03 (2005): 349–57. http://dx.doi.org/10.1142/s0217751x05021518.

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The measurement of the pion–nucleon scattering lengths constitutes a high–precision test of the methods of Chiral Pertubation Theory (χPT), which is the low–energy approach of QCD. The πN s–wave scattering lengths and the pion–nucleon coupling constant are related to the strong–interaction shift ∊1s and width Γ1s of the s–states in the pionic hydrogen atom. ∊1s and Γ1s are determined from the measured energies and line widths of X–ray transitions to the 1s ground state when compared to the calculated electromagnetic values. A new experiment, set up at the Paul–Scherrer–Institut (PSI), has comp

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Papa, Angela. "Charged lepton flavour violation searches at the Paul Scherrer Institut: Status of the MEGII and Mu3e experiments." EPJ Web of Conferences 179 (2018): 01018. http://dx.doi.org/10.1051/epjconf/201817901018.

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The MEG experiment has recently set a new upper limit on the branching ratio of the μ+ → e+γ decay, B(μ+ → e+γ) < 4.2 × 10-13 (at 90% confidence level) and un upgrade of the experiment (the MEGII experiment) is ongoing with the aim of improving the single event sensitivity (SES) by one order of magnitude with respect to the previous MEG experiment’s SES. The strong scientific motivation associated with the charged Lepton Flavour Violation (cLFV) searches pushes also towards searching for the complementary muon cLFV μ+ → e+e+e- decay with the Mu3e experiment aiming at a SES improved by at le

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Sanfilippo, S., V. Vrankovic, M. Negrazus, et al. "Design and Magnetic Performance of Small Aperture Prototype Quadrupoles for the SwissFEL at the Paul Scherrer Institut." IEEE Transactions on Applied Superconductivity 24, no. 3 (2014): 1–5. http://dx.doi.org/10.1109/tasc.2013.2284716.

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Lehmann, E., H. Pleinert, T. Williams, and C. Pralong. "Application of new radiation detection techniques at the Paul Scherrer Institut, especially at the spallation neutron source." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 424, no. 1 (1999): 158–64. http://dx.doi.org/10.1016/s0168-9002(98)01245-5.

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Schumann, Dorothea, and Martin Heule. "Radioanalytics – An Indispensable Tool for Radiological and Nuclear Safety." CHIMIA International Journal for Chemistry 74, no. 12 (2020): 995–99. http://dx.doi.org/10.2533/chimia.2020.995.

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The exact knowledge on the inventory of a radioactive sample is a precondition to act appropriately in terms of nuclear safety. Radioanalytical methods aimed to determine the radionuclide content of activated material play therefore a central role regarding safe operation of nuclear installations, protection of personnel, inhabitants and environment as well as for the design and construction of new facilities. The article gives an overview on the broad variety of analysis and measurement methods, describes necessary chemical separation procedures and explains the impact for nuclear safety asse

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Weber, D. C., R. Schneider, T. Koch, C. Ares, G. Goitein, and E. Hug. "977 poster SPOT SCANNING PROTON BEAM THERAPY DELIVERED AT THE PAUL SCHERRER INSTITUT FOR INTRACRANIAL AND EXTRACRANIAL MENINGIOMAS." Radiotherapy and Oncology 99 (May 2011): S370. http://dx.doi.org/10.1016/s0167-8140(11)71099-4.

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Adamczak, A., A. Antognini, N. Berger, et al. "Nuclear structure with radioactive muonic atoms." EPJ Web of Conferences 193 (2018): 04014. http://dx.doi.org/10.1051/epjconf/201819304014.

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Muonic atoms have been used to extract the most accurate nuclear charge radii based on the detection of X-rays from the muonic cascades. Most stable and a few unstable isotopes have been investigated with muonic atom spectroscopy techniques. A new research project recently started at the Paul Scherrer Institut aims to extend the highresolution muonic atom spectroscopy for the precise determination of nuclear charge radii and other nuclear structure properties of radioactive isotopes. The challenge to combine the high-energy muon beam with small quantity of stopping mass is being addressed by d

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25

Dworkowski, Florian, Ezequiel Panepucci, Claude Pradervand, et al. "Recent developments at the MX beamline X10SA at the SLS." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1731. http://dx.doi.org/10.1107/s2053273314082680.

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The three macromolecular crystallography (MX) beamlines at the Swiss Light Source (SLS) rank among the most productive in Europe. The very successful design of the first beamline, X06SA, inaugurated in 2001, was the basis for the second beamline, X10SA, operated by the Paul Scherrer Institut and financed by the partners Max Planck Society, Novartis and Hofmann-La Roche. To keep up with the increasing demand for high throughput crystallographic experiments, especially in an industrial environment, as well as the rising interest in more challenging targets, the beamline is under constant develop

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Braccini, Saverio, Tommaso Carzaniga, Giulia Pisegna, and Paola Scampoli. "Proton Radiography by Multiple Coulomb Scattering with Nuclear Emulsion Detectors." Instruments 3, no. 1 (2019): 19. http://dx.doi.org/10.3390/instruments3010019.

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The possibility of performing proton radiography by using the proton angular spread due to Coulomb multiple scattering was investigated, for the first time, with an emulsion film detector. Two different phantoms were irradiated with the therapeutic proton beam at the Paul Scherrer Institut (PSI) in Villigen, Switzerland. The first one is a simple polymethylmethacrylate (PMMA) block having two different thicknesses (4 cm and 3 cm), and the second one is a PMMA cube with five aluminum rods embedded along a diagonal. Only one emulsion film was needed to perform the radiography, an important issue

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Papadionysiou, Marianna, Kim Seongchan, Mathieu Hursin, et al. "COUPLING OF nTRACER TO COBRA-TF FOR HIGH-FIDELITY ANALYSIS OF VVERs." EPJ Web of Conferences 247 (2021): 02008. http://dx.doi.org/10.1051/epjconf/202124702008.

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Paul Scherrer Institut is developing a high-resolution multi-physics core solver for VVER analysis. This work presents the preliminary stages of the development, specifically the coupling of the 3D pin-by-pin neutronic solver nTRACER to the sub-channel thermal-hydraulic code COBRA-TF for single assembly multi-physics steady state calculations. The coupling scheme and the modifications performed in the codes are described in details. The results of the coupled nTRACER/COBRA-TF calculations are compared to the ones of a standalone nTRACER calculation where the feedbacks are provided by a simplif

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Glatstein, E. "Results of Spot-Scanning Proton Radiation Therapy for Chordoma and Chondrosarcoma of the Skull Base: The Paul Scherrer Institut Experience." Yearbook of Oncology 2007 (January 2007): 333–34. http://dx.doi.org/10.1016/s1040-1741(08)70502-5.

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Weber, Damien C., Hans Peter Rutz, Eros S. Pedroni, et al. "Results of spot-scanning proton radiation therapy for chordoma and chondrosarcoma of the skull base: The Paul Scherrer Institut experience." International Journal of Radiation Oncology*Biology*Physics 63, no. 2 (2005): 401–9. http://dx.doi.org/10.1016/j.ijrobp.2005.02.023.

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Andrä, Marie, Jiaguo Zhang, Anna Bergamaschi, et al. "Development of low-energy X-ray detectors using LGAD sensors." Journal of Synchrotron Radiation 26, no. 4 (2019): 1226–37. http://dx.doi.org/10.1107/s1600577519005393.

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Recent advances in segmented low-gain avalanche detectors (LGADs) make them promising for the position-sensitive detection of low-energy X-ray photons thanks to their internal gain. LGAD microstrip sensors fabricated by Fondazione Bruno Kessler have been investigated using X-rays with both charge-integrating and single-photon-counting readout chips developed at the Paul Scherrer Institut. In this work it is shown that the charge multiplication occurring in the sensor allows the detection of X-rays with improved signal-to-noise ratio in comparison with standard silicon sensors. The application

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Kim, Taewan, Victor Petrov, Annalisa Manera, and Simon Lo. "Analysis of Void Fraction Distribution and Departure from Nucleate Boiling in Single Subchannel and Bundle Geometries Using Subchannel, System, and Computational Fluid Dynamics Codes." Science and Technology of Nuclear Installations 2012 (2012): 1–20. http://dx.doi.org/10.1155/2012/746467.

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In order to assess the accuracy and validity of subchannel, system, and computational fluid dynamics codes, the Paul Scherrer Institut has participated in the OECD/NRC PSBT benchmark with the thermal-hydraulic system code TRACE5.0 developed by US NRC, the subchannel code FLICA4 developed by CEA, and the computational fluid dynamic code STAR-CD developed by CD-adapco. The PSBT benchmark consists of a series of void distribution exercises and departure from nucleate boiling exercises. The results reveal that the prediction by the subchannel code FLICA4 agrees with the experimental data reasonabl

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Papa, Angela. "Towards a new generation of Charged Lepton Flavour Violation searches at the Paul Scherrer Institut: The MEG upgrade and the Mu3e experiment." EPJ Web of Conferences 234 (2020): 01011. http://dx.doi.org/10.1051/epjconf/202023401011.

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The MEG experiment has recently set a new upper limit on the branching ratio of the µ+ → e+γ decay, ℬ(µ+ → e+γ) < 4.2 × 10−13 (at 90% confidence level) and un upgrade of the experiment (the MEGII experiment) is ongoing with the aim of improving the single event sensitivity (SES) by one order of magnitude with respect to the previous MEG experiment’s SES. The strong scientific motivation associated with the charged Lepton Flavour Violation (cLFV) searches pushes also towards searching for the complementary muon cLFV µ+ → e+e+e− decay with a completely new apparatus, the Mu3e experiment, aimi

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Tinti, G., A. Bergamaschi, S. Cartier, et al. "Similarities and differences of recent hybrid pixel detectors for X-ray and high energy physics developed at the Paul Scherrer Institut." Journal of Instrumentation 10, no. 04 (2015): C04043. http://dx.doi.org/10.1088/1748-0221/10/04/c04043.

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Kaestner, Anders P., Pavel Trtik, Mohsen Zarebanadkouki, et al. "Recent developments in neutron imaging with applications for porous media research." Solid Earth 7, no. 5 (2016): 1281–92. http://dx.doi.org/10.5194/se-7-1281-2016.

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Abstract. Computed tomography has become a routine method for probing processes in porous media, and the use of neutron imaging is especially suited to the study of the dynamics of hydrogenous fluids, and of fluids in a high-density matrix. In this paper we give an overview of recent developments in both instrumentation and methodology at the neutron imaging facilities NEUTRA and ICON at the Paul Scherrer Institut. Increased acquisition rates coupled to new reconstruction techniques improve the information output for fewer projection data, which leads to higher volume acquisition rates. Togeth

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Meents, Alke, Bernd Reime, Maik Kaiser, et al. "A fast X-ray chopper for single-bunch extraction at synchrotron sources." Journal of Applied Crystallography 42, no. 5 (2009): 901–5. http://dx.doi.org/10.1107/s0021889809027873.

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A new X-ray chopper system based on air-bearing technology was developed in a joint project between the Paul Scherrer Institut and DESY. The X-ray chopper wheel of 150 mm diameter has a slit width of 50 µm, which corresponds to an opening time of 230 ns at 30 000 r min−1. The wheel is equipped with either one or two slits at slightly different radii, resulting in repetition frequencies of 500 and 1000 Hz. To reduce air friction the wheel is operated in a reduced-pressure environment. The chopper is controlled by a specially developed phase lock loop controller, which is synchronized to the mas

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Chiappini, Marco, Marco Francesconi, Satoru Kobayashi, Manuel Meucci, Rina Onda та Patrick Schwendimann. "Towards a New μ→eγ Search with the MEG II Experiment: From Design to Commissioning". Universe 7, № 12 (2021): 466. http://dx.doi.org/10.3390/universe7120466.

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The MEG experiment represents the state of the art in the search for the Charged Lepton Flavour Violating μ+→e+γ decay. With its first phase of operations at the Paul Scherrer Institut (PSI), MEG set the most stringent upper limit on the BR (μ+→e+γ)≤4.2×10−13 at 90% confidence level, imposing one of the tightest constraints on models predicting LFV-enhancements through new physics beyond the Standard Model. An upgrade of the MEG experiment, MEG II, was designed and it is presently in the commissioning phase, aiming at a sensitivity level of 6×10−14. The MEG II experiment relies on a series of

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Srinivasan, Sudharsan, and Pierre-André Duperrex. "Dielectric-Filled Reentrant Cavity Resonator as a Low-Intensity Proton Beam Diagnostic." Instruments 2, no. 4 (2018): 24. http://dx.doi.org/10.3390/instruments2040024.

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Measurement of the proton beam current (0.1–40 nA) at the medical treatment facility PROSCAN at the Paul Scherrer Institut (PSI) is performed with ionization chambers. To mitigate the scattering issues and to preserve the quality of the beam delivered to the patients, a non-interceptive monitor based on the principle of a reentrant cavity resonator has been built. The resonator with a fundamental resonance frequency of 145.7 MHz was matched to the second harmonic of the pulse repetition rate (72.85 MHz) of the beam extracted from the cyclotron. This was realized with the help of ANSYS HFSS (Hi

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Kujala, Naresh, Mikako Makita, Jia Liu, et al. "Characterizing transmissive diamond gratings as beam splitters for the hard X-ray single-shot spectrometer of the European XFEL." Journal of Synchrotron Radiation 26, no. 3 (2019): 708–13. http://dx.doi.org/10.1107/s1600577519003382.

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The European X-ray Free Electron Laser (EuXFEL) offers intense, coherent femtosecond pulses, resulting in characteristic peak brilliance values a billion times higher than that of conventional synchrotron facilities. Such pulses result in extreme peak radiation levels of the order of terawatts cm−2 for any optical component in the beam and can exceed the ablation threshold of many materials. Diamond is considered the optimal material for such applications due to its high thermal conductivity (2052 W mK−1 at 300 K) and low absorption for hard X-rays. Grating structures were fabricated on free-s

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Freixa, J., and A. Manera. "Remarks on Consistent Development of Plant Nodalizations: An Example of Application to the ROSA Integral Test Facility." Science and Technology of Nuclear Installations 2012 (2012): 1–17. http://dx.doi.org/10.1155/2012/158617.

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Experimental results obtained at integral test facilities (ITFs) are used in the validation process of system codes for the transient analyses of light water reactors (LWRs). The expertise and guidelines derived from this work are later applied to transient analyses of nuclear power plants (NPPs). However, the boundary conditions at the NPPs will always differ from those at the ITF, and hence, the soundness of the ITF model needs to be maximized. An unaltered ITF nodalization should prove to be able to simulate as many tests as possible, before any conclusion is derived to NPP analyses. The ST

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de Pury-Gysel, Anne, Eberhard H. Lehmann, and Alessandra Giumlia-Mair. "The manufacturing process of the gold bust of Marcus Aurelius: evidence from neutron imaging." Journal of Roman Archaeology 29 (2016): 477–93. http://dx.doi.org/10.1017/s1047759400072275.

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This paper presents the results of applying neutron imaging methods to the gold bust of Marcus Aurelius, an analytical procedure that was carried out in 2006 at the Paul Scherrer Institut in Villigen (Switzerland). The results have produced a better understanding of the gold repoussé manufacturing techniques for large pieces.Given the number of gold statues that existed at Rome and in its provinces, the preserved pieces represent only a tiny fraction; to recover the precious metal, most gold objects were eventually melted down, with the result that only a very small number of pieces are left.

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Scott, Andrew C., Jean Galtier, Neil J. Gostling, et al. "Scanning Electron Microscopy and Synchrotron Radiation X-Ray Tomographic Microscopy of 330 Million Year Old Charcoalified Seed Fern Fertile Organs." Microscopy and Microanalysis 15, no. 2 (2009): 166–73. http://dx.doi.org/10.1017/s1431927609090126.

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AbstractAbundant charcoalified seed fern (pteridosperm) pollen organs and ovules have been recovered from Late Viséan (Mississippian 330 Ma) limestones from Kingswood, Fife, Scotland. To overcome limitations of data collection from these tiny, sometimes unique, fossils, we have combined low vacuum scanning electron microscopy on uncoated specimens with backscatter detector and synchrotron radiation X-ray tomographic microscopy utilizing the Materials Science and TOMCAT beamlines at the Swiss Light Source of the Paul Scherrer Institut. In combination these techniques improve upon traditional ce

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Brunetto, Edoardo L., Fanny Vitullo, Vincent Lamirand, et al. "High resolution measurements with miniature neutron scintillators in the SUR-100 zero power reactor." EPJ Web of Conferences 253 (2021): 04029. http://dx.doi.org/10.1051/epjconf/202125304029.

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Three 1-mm3 miniature fiber-coupled scintillators have been used to perform cm-wise resolution measurements of the thermal neutron flux within experimental channels of the SUR-100 facility, a zero power thermal reactor operated by the Institute of Nuclear Technology and Energy Systems at the University of Stuttgart. The detection system is developed at the École Polytechnique Fédérale de Lausanne in collaboration with the Paul Scherrer Institut. Thermal neutrons count rates were measured along the experimental channels I and II, which cross the reactor at the center and tangentially to the cor

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Hursin, Mathieu, Oskari Pakari, Gregory Perret, et al. "VALIDATION OF AXIAL VOID PROFILE MEASURED BY NEUTRON NOISE TECHNIQUES IN CROCUS." EPJ Web of Conferences 247 (2021): 08004. http://dx.doi.org/10.1051/epjconf/202124708004.

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Recently a joint project has been carried out between the Paul Scherrer Institut, the Ecole Polytechnique Federale de Lausanne and swissnuclear, an industrial partner, in order to determine the axial void distribution in a channel installed in the reflector of the zero power research reactor CROCUS, using neutron noise techniques. The main objective of the present paper is to report on the validation of the results against an alternative measurement technique using gamma-ray attenuation and simulations with the TRACE code. For the gamma-ray attenuation experiments, the channel used in CROCUS i

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Ayres, Nicholas J., Zurab Berezhiani, Riccardo Biondi, et al. "Improved Search for Neutron to Mirror-Neutron Oscillations in the Presence of Mirror Magnetic Fields with a Dedicated Apparatus at the PSI UCN Source." Symmetry 14, no. 3 (2022): 503. http://dx.doi.org/10.3390/sym14030503.

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While the international nEDM collaboration at the Paul Scherrer Institut (PSI) took data in 2017 that covered a considerable fraction of the parameter space of claimed potential signals of hypothetical neutron (n) to mirror-neutron (n′) transitions, it could not test all claimed signal regions at various mirror magnetic fields. Therefore, a new study of n−n′ oscillations using stored ultracold neutrons (UCNs) is underway at PSI, considerably expanding the reach in parameter space of mirror magnetic fields (B′) and oscillation time constants (τnn′). The new apparatus is designed to test for the

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Cinelli, Marco, Matteo Spada, Miłosz Kadziński, Grzegorz Miebs, and Peter Burgherr. "Advancing Hazard Assessment of Energy Accidents in the Natural Gas Sector with Rough Set Theory and Decision Rules." Energies 12, no. 21 (2019): 4178. http://dx.doi.org/10.3390/en12214178.

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The impacts of energy accidents are of primary interest for risk and resilience analysts, decision makers, and the general public. They can cause human health and environmental impacts, economic and societal losses, which justifies the interest in developing models to mitigate these adverse outcomes. We present a classification model for sorting energy accidents in the natural gas sector into hazard classes, according to their potential fatalities. The model is built on decision rules, which are knowledge blocks in the form of “if (condition), then (classification to hazard class x)”. They wer

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Bührer, Minna, Marco Stampanoni, Xavier Rochet, Felix Büchi, Jens Eller, and Federica Marone. "High-numerical-aperture macroscope optics for time-resolved experiments." Journal of Synchrotron Radiation 26, no. 4 (2019): 1161–72. http://dx.doi.org/10.1107/s1600577519004119.

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A novel high-quality custom-made macroscope optics, dedicated to high-resolution time-resolved X-ray tomographic microscopy at the TOMCAT beamline at the Swiss Light Source (Paul Scherrer Institut, Switzerland), is introduced. The macroscope offers 4× magnification, has a very high numerical aperture of 0.35 and it is modular and highly flexible. It can be mounted both in a horizontal and vertical configuration, enabling imaging of tall samples close to the scintillator, to avoid edge-enhancement artefacts. The macroscope performance was characterized and compared with two existing in-house im

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Hülsen, Gregor, Christian Broennimann, Eric F. Eikenberry, and Armin Wagner. "Protein crystallography with a novel large-area pixel detector." Journal of Applied Crystallography 39, no. 4 (2006): 550–57. http://dx.doi.org/10.1107/s0021889806016591.

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The PILATUS 1M detector, developed at the Paul Scherrer Institut, is a single-photon-counting hybrid pixel detector designed for macromolecular crystallography. With more than 1 million pixels covering an area of 243 × 210 mm, it is the largest such device constructed to date. The detector features a narrow point spread function, very fast readout and a complete absence of electronic noise. Unfortunately, this prototype detector has numerous defective pixels and sporadic errors in counting that complicate its operation. With appropriate experimental design, it was largely possible to work arou

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Tinti, G., H. Marchetto, C. A. F. Vaz, et al. "The EIGER detector for low-energy electron microscopy and photoemission electron microscopy." Journal of Synchrotron Radiation 24, no. 5 (2017): 963–74. http://dx.doi.org/10.1107/s1600577517009109.

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EIGER is a single-photon-counting hybrid pixel detector developed at the Paul Scherrer Institut, Switzerland. It is designed for applications at synchrotron light sources with photon energies above 5 keV. Features of EIGER include a small pixel size (75 µm × 75 µm), a high frame rate (up to 23 kHz), a small dead-time between frames (down to 3 µs) and a dynamic range up to 32-bit. In this article, the use of EIGER as a detector for electrons in low-energy electron microscopy (LEEM) and photoemission electron microscopy (PEEM) is reported. It is demonstrated that, with only a minimal modificatio

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Taguchi, Takeyoshi, Christian Brönnimann, and Eric F. Eikenberry. "Next generation X-ray detectors for in-house XRD." Powder Diffraction 23, no. 2 (2008): 101–5. http://dx.doi.org/10.1154/1.2912455.

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A novel type X-ray detector, called PILATUS, has been developed at the Paul Scherrer Institut in Switzerland during the last decade. PILATUS detectors are two-dimensional hybrid pixel array detectors, which operate in single-photon counting mode. PILATUS detectors feature a very wide dynamic range (1:1 000 000), very short readout time (<3.0 ms), no readout noise, and very high counting rate (>2×106counts/s/pixel). In addition, a lower energy threshold can be set in order to suppress fluorescence background from the sample, thus a very good signal-to-noise ratio is achieved. The combinat

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Walter, H. K. "The Paul Scherrer Institute." Nuclear Physics News 3, no. 1 (1993): 5–13. http://dx.doi.org/10.1080/10506899308201849.

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