J. Ritman
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View article: P371 Experiment at CERN -- quest for polarized antiprotons
P371 Experiment at CERN -- quest for polarized antiprotons Open
Polarization effects in the production of antiprotons at the CERN PS beam line T11 at 3.5 GeV/c have been investigated within the P371 experiment. These effects, if found to be significant could provide a simple method to generate polarize…
View article: From real-time calibrations to smart HV tuning for FAIR
From real-time calibrations to smart HV tuning for FAIR Open
Real-time data processing of the next generation of experiments at FAIR requires reliable event reconstruction and thus depends heavily on in-situ calibration procedures. Previously, we developed a neural-network-based approach that predic…
View article: The new Forward Tracker System for the HADES FAIR Phase-0 experiment
The new Forward Tracker System for the HADES FAIR Phase-0 experiment Open
As part of the FAIR phase-0, the HADES experiment underwent a hardware upgrade that included updating existing components, data-acquisition systems, and the integration of new detectors. In particular, the new Straw Tracking Stations (STS)…
View article: Hyperon physics at HADES as a fair phase-0 experiment
Hyperon physics at HADES as a fair phase-0 experiment Open
The HADES experiment investigates the nuclear matter and the properties of baryonic resonances. As part of the FAIR Phase-0 program, HADES is being upgraded to enable a wide range of experiments, including investigating electromagnetic dec…
View article: New results on light nuclei, hyperons and hypernuclei from HADES (HADES collaboration)
New results on light nuclei, hyperons and hypernuclei from HADES (HADES collaboration) Open
In March 2019 the HADES experiment recorded 14 billion Ag+Ag collisions at √ s NN = 2.55 GeV as a part of the FAIR phase-0 physics program. In this contribution, we present and investigate our capabilities to reconstruct and analyze weakly…
View article: Track Finding for the PANDA Detector Based on Hough Transformations
Track Finding for the PANDA Detector Based on Hough Transformations Open
The PANDA experiment at FAIR (Facility for Antiproton and Ion Research) in Darmstadt is currently under construction. In order to reduce the amount of data collected during operation, it is essential to find as many true tracks as possible…
View article: Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR
Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR Open
We plan a semi-exclusive measurement of the 12 C( p,dp ) reaction to search for η’-mesic nuclei, aiming at investigating in-medium properties of the η′-meson. We employ a 2.5 GeV proton beam impinging on a carbon target to produce η′-mesic…
View article: Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
Strange Hadron Spectroscopy with Secondary KL Beam in Hall D Open
We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. The superior CEBAF electron beam will enable a flux on the order of $1\times 10…
View article: Three-nucleon dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="italic">dp</mml:mi></mml:math> breakup collisions using the WASA detector at COSY-Jülich
Three-nucleon dynamics in breakup collisions using the WASA detector at COSY-Jülich Open
Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use of WASA detector at COSY-Juelich. The set of proton-proton coincidences registered at Forward Detector has been…
View article: Study of Silicon Photomultiplier Radiation Hardness with the JULIC Cyclotron
Study of Silicon Photomultiplier Radiation Hardness with the JULIC Cyclotron Open
In this work we study the performance of silicon photomultiplier (SiPM) light sensors after exposure to the JULIC cyclotron proton beam, of energy ~35 MeV, relative to their performance in the absence of an exposure. The SiPM devices used …
View article: Study of Silicon Photomultiplier Radiation Hardness with Proton Beam from the JULIC Cyclotron
Study of Silicon Photomultiplier Radiation Hardness with Proton Beam from the JULIC Cyclotron Open
In this work we study the performance of silicon photomultiplier (SiPM) light sensors after exposure to the JULIC cyclotron proton beam, of energy $\sim$ 39 MeV, relative to their performance before exposure. The SiPM devices used in this …
View article: Study of pp → 𝚵<sup>+</sup> ΛK<sup>-</sup> with the PANDA Detector
Study of pp → 𝚵<sup>+</sup> ΛK<sup>-</sup> with the PANDA Detector Open
For a deeper insight into the mechanisms of non-perturbative QCD it is essential to understand the excitation pattern of baryons. Up to now only the nucleon excitation spectrum has been subject to systematic experimental studies, while ver…
View article: Spectroscopy of $\eta ^{\prime }$-mesic Nuclei with WASA at GSI/FAIR
Spectroscopy of $\eta ^{\prime }$-mesic Nuclei with WASA at GSI/FAIR Open
We plan to conduct an experimental search for η0-mesic nuclei in order to investigate in-medium properties of the η0 meson. A 2.5 GeV proton beam is employed to produce η0-mesic 11C nuclei with the 12C(p,d)η0⊗ 11C reaction. Simultaneous me…
View article: Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study
Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study Open
The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities coul…
View article: Implementation of GENFIT2 as an experiment independent track-fitting framework
Implementation of GENFIT2 as an experiment independent track-fitting framework Open
The GENFIT toolkit, initially developed at the Technische Universitaet Muenchen, has been extended and modified to be more general and user-friendly. The new GENFIT, called GENFIT2, provides track representation, track-fitting algorithms a…
View article: Drift chamber calibration and particle identification in the P-349 experiment
Drift chamber calibration and particle identification in the P-349 experiment Open
The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the preparation of a polarized antiproton beam. In this article, we present the details of …
View article: Polarization analysis of <i>p</i> produced in pA collisions
Polarization analysis of <i>p</i> produced in pA collisions Open
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antipr…
View article: Design of a detector to study S=−2$S = - 2$ baryon interactions induced by stopped antiproton annihilation
Design of a detector to study S=−2$S = - 2$ baryon interactions induced by stopped antiproton annihilation Open
Stopped antiproton annihilation can initiate an effcient chain of reactions to produce Ξ hyperons in recoil free kinematics, suitable for further investigations of Ξ N interactions. Four delayed decays and presence of eight charged particl…
View article: Feasibility Study for an EDM Storage Ring
Feasibility Study for an EDM Storage Ring Open
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities c…
View article: Performance of a prototype Straw Tube Tracker for the PANDA experiment
Performance of a prototype Straw Tube Tracker for the PANDA experiment Open
The PANDA experiment is one of the pillars of the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. The PANDA physics program is focused on answering fundamental questions related to Quantum Chromo Dynamics (QCD…
View article: Spin Dependence of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>η</mml:mi></mml:math> Meson Production in Proton-Proton Collisions Close to Threshold
Spin Dependence of Meson Production in Proton-Proton Collisions Close to Threshold Open
Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high polarization degree of the proton beam of COSY, the reaction p[over →]p→ppη has been measured close to threshold to explore the analyzing…