| 1. |
- Erni, W., et al.
(författare)
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Technical design report for the PANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker
- 2013
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Ingår i: European Physical Journal A. Hadrons and Nuclei. - : Springer Science and Business Media LLC. - 1434-6001 .- 1434-601X. ; 49:2
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Tidskriftsartikel (refereegranskat)abstract
- This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the PANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM stations. The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole PANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.
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| 2. |
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| 3. |
- Marcks von Wurtemberg, Klas, et al.
(författare)
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The response of lead-tungstate scintillators (PWO) to photons with energies in the range 13 MeV-64 MeV
- 2012
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576 .- 0167-5087. ; 679, s. 36-43
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Tidskriftsartikel (refereegranskat)abstract
- The response of a matrix of 25 lead tungstate (PWO) scintillator detectors, operated at -25 degrees C, to photons in the range 13 MeV-64 MeV has been measured at the tagged-photon facility at MAX-lab, Lund. The tapered PWO crystals, each with a length of 200 mm and a cross-section of 24.4 x 24.4 mm(2) in the front end, read out by 19 mm photomultiplier tubes, were arranged in a 5 x 5 matrix. The response was measured for photons directed towards the centre of the central crystal as well as for photons directed towards the corner of the central crystal, where four crystals meet. The obtained energy resolution surpasses what has been published so far and is close to the limit given by Poisson statistics and escaped energy. For photons directed towards the centre(corner) of the central crystal the relative energy resolution, defined as (FWHM/2.35)/E-gamma, decreases from 7.3%(11.0%) at E-gamma = 13 MeV to 3.3%(3.6%) at E-gamma = 64 MeV. The reconstructed point of impact of a photon in this energy range is determined with an uncertainty (one standard deviation) of 7.3 +/- 0.1 mm.
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| 4. |
- Bersani, Andrea, et al.
(författare)
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The PANDA detector at FAIR
- 2012
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Ingår i: Physica scripta. T. - : Institute of Physics Publishing (IOPP). - 0281-1847. ; T150, s. 014006-
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA detector will be installed at FAIR to enterprise a long-term, wide-spectrum physics program in the strong interaction framework. The detector will be installed at the HESR accumulation ring, which will provide an anti-proton beam of unprecedented luminosity and momentum definition. The beam will interact with an internal target. The detector has been designed to allow a 4π coverage around the interaction region. Due to the relatively high energy of the beam, up to 15 GeV, PANDA will feature two magnetic spectrometers: the target spectrometer (TS), with a superconducting solenoid and covering the interaction region, and a forward spectrometer (FS), with a normal-conducting dipole and covering the small angles region. Since the physics program is wide and the requirements on the various subsystems are different, the detector has been designed to be as flexible as possible. The complete detector will be described in detail, both from the viewpoint of the proposed techniques and from the viewpoint of the expected performances. An overview of the status of various components of the detector will be presented, too.
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| 5. |
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| 6. |
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| 7. |
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| 8. |
- Calvo, Daniela, et al.
(författare)
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The silicon Micro Vertex Detector of the PANDA$ experiment
- 2013
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; A718, s. 39-42
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA experiment will make use of cooled antiproton beams of unprecedented quality that will become available at the Facility for Antiproton and Ion Research in Darmstadt, featuring a 1.5-15GeV/c momentum range. The physics program includes measurements of hyperons produced at low energies, spectroscopy of charmonium and open-charm mesons. To handle the forward peaked particle distribution due to the Lorentz boost, the apparatus is arranged in an asymmetric layout around the interaction point. In particular the Micro Vertex Detector based on silicon devices will have a rather unusual geometry. The MVD features fast data readout, since the experiment is triggerless, particle identification over the full range of energies, limited material budget and good spatial and time resolution. The status of the MVD design is shown and the present prototypes are described.
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| 9. |
- Destefanis, Marco, et al.
(författare)
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Drell-Yan studies in ppbar reactions at FAIR
- 2013
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Ingår i: Physics of particles and nuclei. - 1063-7796 .- 1090-6495. ; 44, s. 886-889
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Tidskriftsartikel (refereegranskat)abstract
- The nucleonic structure is far to be completely understood. A transverse momentum dependent description of the nucleon structure is a crucial mile stone for several forthcoming studies in a wide range of experimental scenarios. By mean of antiproton beams, eventually polarized, that will be available at the future FAIR facility with a beam momentum up to 15 GeV/ c , the nonperturbative region of the QCD could be accessed. One of the main goal of the forthcoming expe riments at FAIR is the investigation of those Drell– Yan lepton pairs produced in protonantiproton annihila tions, taking advantage of the high expected lumi nosities. Drell–Yan studies are a unique tool to acce ss the spin depending properties of the nucleon, and namely its transverse degrees of freedom. Transver se Momentum Dependent (TMD) Parton Distribution Functions (PDFs), in particular the Boer–Mulders, the Sivers and the Transversity distribution functions, could be widely investigated by mean of the correspon ding experimental azimuthal asymmetries. In later stages of FAIR, single and doublespin asymmetries could be investigated as well. The Drell–Yan physics program which could be accessed at FAIR will be discussed in details, with a particular focus on the PANDA experimental scenario
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| 10. |
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| 11. |
- Destefanis, Marco, et al.
(författare)
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The PANDA experiment at FAIR
- 2013
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Ingår i: Nuclear physics B, Proceedings supplements. - : Elsevier BV. - 0920-5632 .- 1873-3832. ; 245, s. 199-206
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA (antiProton ANnihilation at DArmstadt) experiment is one of the major projects in preparation at the upcoming FAIR facility in Darmstadt, Germany. It will study interactions between antiprotons and protons or nuclei in the momentum range from 1.5 GeV/c to 15 GeV/c. The PANDA scientific program will address a wide range of topics, all aiming at improving our understanding of the strong interaction and hadron structure. The PANDA detector is a general-purpose spectrometer that will collect high quality and high statistics data in the fields of meson spectroscopy, baryon-antibaryon production, baryon spectroscopy, hypernuclear physics, hadron properties in the nuclear medium, and nucleon structure. This paper reviews some of the main physics topics of the experiment, together with a presentation of the detector.
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| 12. |
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| 13. |
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| 14. |
- Fioravanti, Elisa, et al.
(författare)
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Hadron spectroscopy at PANDA
- 2012
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Ingår i: The physics of excited nucleons. - : American Institute of Physics (AIP). - 9780735410183 ; , s. 391-394
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Konferensbidrag (refereegranskat)abstract
- FAIR a new International Facility for Antiproton and Ion Reaserach, is under construction at Darmstadt, in Germany. This will provide scientists in the world with outstanding beams and experimental conditions for studying matter at the level of atoms, nuclei, and other subnuclear constituents. An antiproton beam with intensity up to 2Oe107 p/s and high momentum resolution will be available at the High Energy Storage Ring (HESR) where the PANDA (Antiproton Annihilation At Darmstadt) detector will be installed. In this paper, we will illustrate the details of PANDA scientific program related to hadron spectroscopy, after a brief introduction about the FAIR facility and the PANDA detector.
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| 15. |
- Gillitzer, A., et al.
(författare)
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Strong interaction physics with PANDA
- 2011
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Ingår i: International Journal of Modern Physics A (IJMPA). ; 26:3-4, s. 523-528
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Tidskriftsartikel (refereegranskat)
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| 16. |
- Guliyev, Elmaddin, et al.
(författare)
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VHDL implementation of feature-extraction algorithm for the PANDA electromagnetic calorimeter
- 2012
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier. - 0168-9002 .- 1872-9576. ; 664:1, s. 22-28
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Tidskriftsartikel (refereegranskat)abstract
- A simple, efficient, and robust feature-extraction algorithm, developed for the digital front-end electronics of the electromagnetic calorimeter of the PANDA spectrometer at FAIR, Darmstadt, is implemented in VHDL for a commercial 16 bit 100 MHz sampling ADC. The source-code is available as an open-source project and is adaptable for other projects and sampling ADCs. Best performance with different types of signal sources can be achieved through flexible parameter selection. The on-line data-processing in FPGA enables to construct an almost dead-time free data acquisition system which is successfully evaluated as a first step towards building a complete trigger-less readout chain. Prototype setups are studied to determine the dead-time of the implemented algorithm, the rate of false triggering, timing performance, and event correlations.
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| 17. |
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| 18. |
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| 19. |
- Hedman, Christoffer, et al.
(författare)
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Hjälpa eller stjälpa?
- 2019
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Ingår i: Didaktisk utvecklingsdialog. - Lund : Studentlitteratur AB. - 9789144125749 ; , s. 85-102
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 20. |
- Kavatsyuk, M., et al.
(författare)
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Front-End Electronics and Feature-Extraction Algorithm for the PANDA Electromagnetic Calorimeter
- 2011
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Ingår i: Journal of Physics, Conference Series. - : Institute of Physics (IOP). - 1742-6588 .- 1742-6596. ; 293
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA collaboration at FAIR, Germany, will employ antiproton annihilations to investigate yet undiscovered charm-mesons and glueballs aiming to unravel the origin of hadronic masses. A multi-purpose detector for tracking, calorimetry and particle identification is presently being developed to run at high luminosities providing up to 2.10 7 interactions/s. A trigger-less data-acquisition system will be employed with sub-detectors continuously providing data from incoming physics events. This paper describes readout electronics and the treatment of the digitised preamplifier signal for the Electromagnetic Calorimeter. The use of a Sampling ADC in the readout allows to achieve the design goals, namely a large dynamic range from 1 MeV to 10 GeV, a count-rate dependent low trigger threshold of about 1-3 MeV, and a time resolution better than 1 ns.
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| 21. |
- Kavatsyuk, Myroslav, et al.
(författare)
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Trigger-less readout system with pulse pile-up recovery for the PANDA electromagnetic calorimeter
- 2013
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; A718, s. 217-219
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Tidskriftsartikel (refereegranskat)abstract
- A simple, efficient, and robust on-line data-processing scheme was developed for the digital front-end electronics of the electromagnetic calorimeter of the PANDA spectrometer at FAIR, Darmstadt. The implementation of the processing algorithm in FPGA enables the construction of an almost dead-time free data acquisition system. The prototype of a complete trigger-less readout chain has been developed and evaluated. The precision of time synchronisation commands has been verified. A pile-up recovery algorithm was developed and evaluated over a large dynamic range of signal amplitudes.
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| 22. |
- Maggiora, Marco, et al.
(författare)
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Proton time-like form factors at PANDA
- 2013
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Ingår i: AIP Conference Proceedings. - : AIP. - 0094-243X .- 1551-7616. ; 1560, s. 588-590
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Tidskriftsartikel (refereegranskat)abstract
- A global description of the nucleonstructure in the complete kinematic region is needed. The ̄PANDA experimental scenario at FAIR could allow for an independent evaluation of the proton Time-Like Form Factors and for the investigation of an unprecedented large q2 range in order to probe their asymptotic behaviour. The sensitivity to higher order contributions to Born approximation is discussed as well.
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| 23. |
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| 24. |
- Mochalov, Vasily, et al.
(författare)
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Physics with antiprotons at PANDA
- 2013
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Ingår i: Nuclear physics B, Proceedings supplements. - : Elsevier BV. - 0920-5632 .- 1873-3832. ; 245, s. 124-131
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA collaboration (anti-Proton ANnihilations at DArmstadt) is a next generation hadron physics experiment to be operated at the future Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. It will use intensive cooled antiproton beams with a momentum between 1.5 GeV/c and 15 GeV/c. The PANDA detector is a state-of-the-art internal target detector allowing the detection and identification of neutral and charged particles almost in the whole solid angle.
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| 25. |
- Moeini, Hossein, et al.
(författare)
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Design Studies of the PWO Forward End-cap Calorimeter for PANDA
- 2013
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Ingår i: European Physical Journal A. - : Springer Science and Business Media LLC. - 1434-6001 .- 1434-601X. ; A49, s. 138-
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Tidskriftsartikel (refereegranskat)abstract
- The PANDA detection system at FAIR, Germany, is designed to study antiproton-proton annihilations, in order to investigate among others the realm of charm-meson states and glueballs, which has still much to reveal. The yet unknown properties of this field are to be unraveled through studying QCD phenomena in the non-perturbative regime. The multipurpose PANDA detector will be capable of tracking, calorimetry, and particle identification, and is foreseen to run at high luminosities providing average reaction rates up to 20 Million interactions/s. The envisaged physics program requires measurements of photons and charged particles with excellent energy, position, and time resolutions. The electromagnetic calorimeter (EMC) will serve as one of the basic components of the detector setup and comprises cooled Lead-Tungstate (PbWO4) crystals. This paper presents the mechanical design of the Forward End-cap calorimeter and analyses the response of this detector component in conjunction with the full EMC and the complete PANDA detector. The simulation studies are focused on the performance of the planned EMC with respect to the energy and spatial resolution of the reconstructed photons. Results of the Monte Carlo simulations, excluding very low-energy photons, have been validated by data obtained from a prototype calorimeter and shown to fulfil the requirements imposed by the PANDA physics program.
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| 26. |
- Novotny, R.W., et al.
(författare)
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High-quality PWO crystals for the PANDA-EMC
- 2011
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Ingår i: Journal of Physics, Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 293:1, s. 012003-
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Tidskriftsartikel (refereegranskat)abstract
- The paper provides a status report on the crystal production and quality control of a major part of the PbWO 4 crystals for the PANDA-EMC. The results confirm the excellent performance of the new generation of PWO-II. The mechanism of stimulated recovery provides an additional tool to recover radiation damage at room and low temperatures by applying an external infrared light source. Even on-line recovery can be considered if the photo sensor is insensitive in that particular wavelength region.
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| 27. |
- Schwarz, Carsten, et al.
(författare)
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The PANDA Experiment at FAIR
- 2012
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Ingår i: 5th DAE-BRNS Workshop on Hadron Physics (Hadron 2011). - : Institute of Physics Publishing (IOPP). ; , s. 012003-
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The PANDA experiment represents the central part of the hadron physics branch of the antiproton program of the new Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. It will investigate antiproton annihilations with almost 4π acceptance from two subsequent spectrometers in the momentum range from 1.5 GeV/c to 15 GeV/c. The gluon rich reaction product of antiproton-proton and antiproton-nucleus collisions on one hand and the high intensity and phase space cooled antiproton beam of the HESR on the other hand constitutes an ideal environment to study non-conventional hadronic states. It allows the high precision spectroscopy of the charmonium system and the copious production of hypernuclei.
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| 28. |
- Schönning, Karin, et al.
(författare)
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Antihyperon-hyperon production in antiproton-proton annihilations with PANDA
- 2014
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Ingår i: FAIRNESS 2013. - : IOP Publishing. ; , s. 012013-
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Konferensbidrag (refereegranskat)abstract
- Hyperon production is an excellent probe of the strong interaction in the confinement domain. The spin observables provide a powerful tool in understanding the underlying physical processes. Expressions of the seven non-zero polarisation parameters of the Omega baryon from decay angular distributions have recently been derived by the Uppsala group. Simulation studies show that all strange and single charmed hyperon production channels have great prospects with the PANDA detector.
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| 29. |
- Schönning, Karin, et al.
(författare)
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Spin observables in antihyperon-hyperon production with PANDA
- 2014
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Ingår i: XI International Conference on Hyperons, Charm and Beauty Hadrons (BEACH 2014). - : IOP Publishing. ; , s. 012007-
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Konferensbidrag (refereegranskat)abstract
- Spin observables provide a powerful tool in understanding the physics. Seven polarisation parameters of the Omega baryon can be extracted from the angular distributions of the hyperon decay and studied with the future PANDA experiment at FAIR. Simulation studies show that strange and single charmed hyperon channels have great prospects with PANDA.
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| 30. |
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| 31. |
- Thomé, Erik, 1980-
(författare)
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Multi-Strange and Charmed Antihyperon-Hyperon Physics for PANDA
- 2012
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The prospects of studying multi-strange and charmed antihyperon-hyperon physics and CP violation in hyperon decays in the upcoming PANDA experiment at FAIR, Germany, have been studied in this thesis.The angular dependence on polarisation parameters in the decay of the spin 3/2 Omega hyperon was calculated using the density matrix formalism. Expressions for the angular distributions in the Ω -> ΛK and the subsequent Λ -> pπ decays were derived.Simulations were performed for the pbar p -> Ξ+ Ξ-, pbar p -> Ω+Ω- and pbar p -> Λc-Λc+ reactions. Special attention was given to the reconstruction of spin variables. It is shown that PANDA will register tens of events per second for the pbar p -> Ξ+Ξ- reaction. This should be compared to the previously existing data of a handfull of events. For the other two reactions the event rates will be lower, but still reasonably high. This will be the first measurements of these reactions. It is shown that spin variables can be reconstructed in all three reactions for all production angles of the hyperons. Simulations concerning the possibility to measure CP violation parameters in hyperon decays were also made for the reactions pbar p- > Λbar Λ and pbar p -> Ξ+Ξ-. It was found that false signals from detector asymmetries disappears if no particle identification criterium is used and the analysis is restricted to events were the hyperon decays occur close to the beam axis.The effect of the magnetic field in the PANDA detector on the measurement of hyperon spin variables was investigated for the case of pbar p -> Λbar Λ. The effect was observed to be small for polarisation and negligible for spin correlations.
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| 32. |
- Wieder, Ulrich, et al.
(författare)
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Hadron Physics with PANDA at FAIR
- 2011
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Ingår i: AIP Conference Proceedings. - : AIP. - 0094-243X .- 1551-7616. ; 1388, s. 408-411
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Tidskriftsartikel (refereegranskat)
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| 33. |
- Wuerschig, Thomas, et al.
(författare)
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Charm spectroscopy at the PANDA experiment
- 2012
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Ingår i: Particles and nuclei. - : American Institute of Physics (AIP). - 9780735410350 ; , s. 329-331
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Konferensbidrag (refereegranskat)abstract
- Based on a short review of the current experimental status, future perspectives for the spectroscopy of charmed hadrons at P̄ANDA will be discussed. The main emphasis is on the sector of D mesons and charmonium systems. In contrast to other experiments, P̄ANDA will render possible high-precision spectroscopy for bound states of any quantum number. The expected detector performance is highlighted by simulation results of selected physics benchmark channels.
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