S. D. Worm
A5060158454- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- CCD and CMOS Imaging Sensors
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Radiation Effects in Electronics
- Radiation Therapy and Dosimetry
- Advanced Semiconductor Detectors and Materials
- Superconducting Materials and Applications
- Silicon and Solar Cell Technologies
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Data Storage Technologies
- Diamond and Carbon-based Materials Research
- Advanced Radiotherapy Techniques
Deutsches Elektronen-Synchrotron DESY
2020-2025
European Organization for Nuclear Research
2011-2024
Humboldt-Universität zu Berlin
2022-2024
Government of Catalonia
2024
German Institute for Adult Education
2022-2024
Federación Española de Enfermedades Raras
2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Atlas Scientific (United States)
2024
Rutherford Appleton Laboratory
2013-2023
This document a outlines set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these have when applied searches at LHC, provide number useful expressions reference. The list includes both s-channel t-channel scenarios. For s-channel, spin-0 spin-1 mediations are discussed, also realizations where Higgs particle provides portal between visible sectors. guiding principles underpinning proposed...
Abstract The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched geostationary orbit in 2027. It will carry a telescope with an unprecedentedly large field of view (204 deg 2 ) and near-ultraviolet (NUV; 230–290 nm) sensitivity (22.5 mag, 5 σ , at 900 s). ULTRASAT conduct the first wide-field survey transient variable NUV sources revolutionize our ability study hot Universe. explore new parameter space energy timescale (months-long light curves minutes cadence),...
This document summarises the proposal of LHC Dark Matter Working Group on how to present results s-channel simplified dark matter models and compare them direct (indirect) detection experiments.
In this White Paper we present and discuss a concrete proposal for the consistent interpretation of Dark Matter searches at colliders in direct detection experiments. Based on specific implementation simplified models vector axial-vector mediator exchanges, demonstrates how two search strategies can be compared an equal footing.
Depleted Monolithic Active Pixel Sensor (DMAPS) prototypes developed in the TowerJazz 180 nm CMOS imaging process have been designed context of ATLAS upgrade Phase-II at HL-LHC. The pixel sensors are characterized by a small collection electrode (3 $\mu$m) to minimize capacitance, size ($36.4\times 36.4$ $\mu$m), and produced on high resistivity epitaxial p-type silicon. design targets radiation hardness $1\times10^{15}$ 1 MeV n$_{eq}$/cm$^{2}$, compatible with outermost layer ITK detector....
Abstract The detection of variations fundamental constants the Standard Model would provide us with compelling evidence new physics, and could lift veil on nature dark matter energy. In this work, we discuss how a network atomic molecular clocks can be used to look for such unprecedented sensitivity over wide range time scales. This is precisely goal recently launched QSNET project: A measuring stability constants. will include state-of-the-art clocks, but also develop next-generation highly...
MALTA2 is a depleted monolithic active pixel sensor (DMAPS) designed for tracking at high rates and typically low detection threshold of $\sim150\,\mathrm{e^-}$. A precise knowledge the crucial to understanding charge collection in specifying environment application. simple procedure developed calibrate unit electrons making use dedicated injection circuit an Fe-55 source with dominant deposition $1600\, \mathrm{e^-}$. The voltage determined which corresponds under exposure basis...
MALTA2 is a Depleted Monolithic Active Pixel Sensor designed to meet the challenging requirements of future collider experiments, in particularly extreme radiation tolerance and high hit rate. The sensor fabricated modified Tower 180 nm CMOS imaging technology mitigate performance degradation caused by 100 MRad Total Ionising Dose greater than 10^{15} 1 MeV n_{eq}/cm^2 Non-Ionising Energy Loss. samples have been tested during CERN SPS test beam campaign 2023-2024, before after irradiation at...
Abstract Objective. The Photo Injector Test facility at DESY in Zeuthen (PITZ) is building up an R&D platform, known as FLASHlab@PITZ, for systematically studying the FLASH effect cancer treatment with its high-brightness electron beams, which can provide a uniquely large dose parameter range radiation experiments. In this paper, we demonstrate capabilities by experiments reduced on startup beamline and study potential performance of full simulations. Approach. To measure dose,...
We present an analysis of the discovery reach for supersymmetric particles at upgraded Tevatron collider, assuming that SUSY breaking results in universal soft parameters grand unification scale, and lightest particle is stable neutral. first a review literature, including issues unification, renormalization group evolution supersymmetry effect radiative corrections on effective low energy couplings masses theory. consider experimental bounds coming from direct searches those arising...
Charge collection properties of particle detectors made in HV-CMOS technology were investigated before and after irradiation with reactor neutrons. Two different sensor types designed processed 180 350 nm by AMS. Edge-TCT charge measurements electrons from 90Sr source employed. Diffusion generated carriers undepleted substrate contributes significantly to the irradiation, while drift contribution prevails as shown at shaping times. The depleted region a given bias voltage was found grow...
This document summarises the proposal of LHC Dark Matter Working Group on how to present results $s$-channel simplified dark matter models and compare them direct (indirect) detection experiments.
MALTA is part of the Depleted Monolithic Active Pixel sensors designed in Tower 180nm CMOS imaging technology. A custom telescope with six planes has been developed for test beam campaigns at SPS, CERN, ability to host several devices under test. The system a dedicated readout, online monitoring integrated into DAQ realtime hit map, time distribution and event multiplicity. It hosts fully configurable trigger enabling on coincidence between timing reference from scintillator. excellent...
Objective.This work presents a method for enhanced detection, imaging, and measurement of the thermal neutron flux.Approach. Measurements were performed in water tank, while detector is positioned out-of-field 20 MeV ultra-high pulse dose rate electron beam. A semiconductor pixel Timepix3 with silicon sensor partially covered by a6LiF converter was used to measure flux, spatial, time characteristics field. To provide absolute measurements detection efficiency calibration detectors reference...
In this article, a low-power, radiation-hard front-end circuit for monolithic pixel sensors, designed to meet the requirements of low noise and pixel-to-pixel variability, key features achieve high detection efficiencies, is presented. The sensor small collection electrode capacitance (<5 fF) allows full CMOS in-pixel circuitry. implemented in 180-nm imaging technology from TowerJazz foundry integrated into MALTA2 chip, which part development that targets specifications outer layer ATLAS...
Abstract Depleted Monolithic Active Pixel Sensor (DMAPS) sensors developed in the Tower Semiconductor 180 nm CMOS imaging process have been designed context of ATLAS ITk upgrade Phase-II at HL-LHC and for future collider experiments. The “MALTA-Czochralski (MALTA-Cz)” full size DMAPS sensor has with goal to demonstrate a radiation hard, thin high granularity, hit-rate capability, fast response time superior tolerance. design targets hardness > 10 15 (1 MeV) n eq /cm 2 100 Mrad TID. shall...
We have searched for a neutral $H$ dibaryon decaying via $H\toΛn$ and $H\toΣ^0 n$. Our search has yielded two candidate events from which we set an upper limit on the production cross section. Normalizing to inclusive $Λ$ section, find $(dσ_H/dΩ) / (dσ_Λ/dΩ) < 6.3\times 10^{-6}$ at 90% C.L., of mass $\approx$ 2.15 GeV/$c^2$.
In an experiment designed to search for and study very rare two-body decay modes of the KL0, we have observed four examples KL0→e+e−, where expected background is 0.17±0.10 events. This observation translates into a branching fraction 8.7−4.1+5.7×10−12, consistent with recent theoretical predictions. result represents by far smallest yet measured in particle physics.Received 1 September 1998DOI:https://doi.org/10.1103/PhysRevLett.81.4309©1998 American Physical Society