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Wyświetlanie 1-10 z 15
Tytuł:
Pressure stabilized straw tube modules for the PANDA Forward Tracker
Autorzy:
Savrie, M.
Ritman, J.
Lalik, Rafał
Korcyl, Grzegorz
Wintz, P.
Smyrski, Jerzy
Malarz, Adam
Lisowski, E.
Heczko, Andrzej
Idzik, M.
Kajetanowicz, Marcin
Migdał, Wojciech
Misiak, A.
Salabura, Piotr
Gianotti, P.
Swientek, K.
Przygoda, Witold
Fiutowski, T.
Korzeniak, Bartłomiej
Wrońska, Aleksandra
Opis:
The design of straw tube detector modules developed for the PANDA Forward Tracker is presented. One module consists of 32 straws with 10 mm diameter, arranged in two staggered layers, and has a very low material budget of only 8.8⋅10^{−4}X_{0}. The overpressure of the working gas mixture of 1 bar makes the module self-supporting and enables the use of lightweight and compact support frames. Detection planes in the Forward Tracker consist of modules mounted closely, without gaps, next to each other on a support frame. A module can be mounted and dismounted from the frame without the need to remove the neighboring modules, enabling fast repairs. Technical details of the detector design and the assembly procedure of the straw tubes and the straw modules as well as results of performed tests of the modules are given.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Strip- PET : a novel detector concept for the TOF-PET scanner
Autorzy:
Rudy, Zbigniew
Kapłon, Łukasz
Kajetanowicz, Marcin
Łojek, Konrad
Molenda, Marcin
Zieliński, Marcin
Majewski, Jerzy
Migdał, Wojciech
Bednarski, Tomasz
Smyrski, Jerzy
Zdebik, Jarosław
Ciszewska, Marta
Salabura, Piotr
Pałka, Marek
Heczko, Andrzej
Silarski, Michał
Słomski, Artur
Niedźwiecki, Szymon
Moskal, Paweł
Czerwiński, Eryk
Krzemień, Wojciech
Kochanowski, Andrzej
Konopka-Cupiał, Gabriela
Białas, Piotr
Korcyl, Grzegorz
Opis:
We briefly present a design of a new PET scanner based on strips of polymer scintillators arranged in a barrel constituting a large acceptance detector. The solution proposed is based on the superior timing properties of the polymer scintillators. The position and time of the reaction of the gamma quanta in the detector material will be determined based on the time of arrival of light signals to the edges of the scintillator strips.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
TOF-PET detector concept based on organic scintillators
Autorzy:
Rudy, Zbigniew
Kapłon, Łukasz
Kajetanowicz, Marcin
Łojek, Konrad
Molenda, Marcin
Zieliński, Marcin
Majewski, Jerzy
Migdał, Wojciech
Bednarski, Tomasz
Smyrski, Jerzy
Zdebik, Jarosław
Ciszewska, Marta
Salabura, Piotr
Pałka, Marek
Heczko, Andrzej
Silarski, Michał
Słomski, Artur
Niedźwiecki, Szymon
Moskal, Paweł
Czerwiński, Eryk
Krzemień, Wojciech
Kochanowski, Andrzej
Konopka-Cupiał, Gabriela
Białas, Piotr
Korcyl, Grzegorz
Opis:
In this contribution we present a new concept of the large acceptance detector systems based on organic scintillators which may allow for simultaneous diagnostic of large fraction of the human body. Novelty of the concept lies in employing large blocks of polymer scintillators instead of crystals as detectors of annihilation quanta, and in using predominantly the timing of signals instead of their amplitudes.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Electromagnetic calorimeter for HADES experiment
Autorzy:
Reshetin, A.
Golubeva, M.
Sobolev, Y. G.
Traxler, M.
Guber, F.
Kajetanowicz, Marcin
Linev, S.
Neiser, A.
Kardan, B.
Koenig, W.
Ott, O.
Salabura, Piotr
Fabbietti, L.
Tlusty, P.
Rodríguez-Ramos, P.
Lisowski, E.
Pietraszko, J.
Svoboda, O.
Hlaváč, S.
Pethukov, O.
Korcyl, Grzegorz
Lapidus, K.
Chlad, L.
Galatyuk, T.
Kugler, A.
Rost, A.
Thomas, A.
Otte, O.
Ivashkin, A.
Epple, E.
Opis:
Electromagnetic calorimeter (ECAL) is being developed to complement dilepton spectrometer HADES. ECAL will enable the HADES@FAIR experiment to measure data on neutral meson production in heavy ion collisions at the energy range of 2-10 AGeV on the beam of future accelerator SIS100@FAIR. We will report results of the last beam test with quasi-monoenergetic photons carried out in MAMI facility at Johannes Gutenberg Universität Mainz.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Multichannel FPGA based MVT system for high precision time (20 ps RMS) and charge measurement
Autorzy:
Niedźwiecki, Szymon
Kubicz, Ewelina
Pałka, Marek
Czerwiński, Eryk
Bednarski, Tomasz
Białas, Piotr
Rudy, Zbigniew
Korcyl, Grzegorz
Gorgol, M.
Zieliński, Marcin
Dulski, Kamil
Smyrski, Jerzy
Strzelecki, Adam
Gajos, Aleksander
Rundel, Oleksandr
Mohammed, Muhsin
Kajetanowicz, Marcin
Głowacz, Bartosz
Zgardzińska, B.
Jasińska, B.
Kisielewska, Daria
Kowalski, P.
Raczyński, L.
Strzempek, Paweł
Salabura, Piotr
Wiślicki, W.
Gupta-Sharma, Neha
Krzemień, Wojciech
Moskal, Paweł
Silarski, Michał
Wieczorek, Anna
Kozik, Tomasz
Opis:
In this article it is presented an FPGA based Multi- Voltage Threshold (MVT) system which allows of sampling fast signals (1–2 ns rising and falling edge) in both voltage and time domain. It is possible to achieve a precision of time measurement of 20 ps RMS and reconstruct charge of signals, using a simple approach, with deviation from real value smaller than 10%. Utilization of the differential inputs of an FPGA chip as comparators together with an implementation of a TDC inside an FPGA allowed us to achieve a compact multi-channel system characterized by low power consumption and low production costs. This paper describes realization and functioning of the system comprising 192-channel TDC board and a four mezzanine cards which split incoming signals and discriminate them. The boards have been used to validate a newly developed Time-of-Flight Positron Emission Tomography system based on plastic scintillators. The achieved full system time resolution of σ(TOF) ≈ 68 ps is by factor of two better with respect to the current TOF-PET systems.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Positronium image of the human brain in vivo
Autorzy:
Curceanu, Catalina
Chug, Neha
Kapłon, Łukasz
Niedźwiecki, Szymon
Perez del Rio, Elena
Czerwiński, Eryk
Skurzok, Magdalena
Bass, Steven
Tayefi Ardebili, Keyvan
Mryka, Wiktor
Kumar, Deepak
Królicki, Leszek
Moskal, Gabriel
Kacprzak, Krzysztof
Korcyl, Grzegorz
Kubat, Karol
Fronczewska, Katarzyna
Dulski, Kamil
Shivani, Shivani
Dadgar, Meysam
Baran, Jakub
Choiński, Jarosław
Gajos, Aleksander
Kajetanowicz, Marcin
Kobylecka, Małgorzata
Raczyński, Lech
Migdał, Wojciech
Tanty, Pooja
Shopa, Roman Y.
Stępień, Ewa
Mączewska, Joanna
Klimaszewski, Konrad
Das, Manish
Valsan Eliyan, Kavya
Wiślicki, Wojciech
Parzych, Szymon
Tayefi Ardebili, Faranak
Sharma, Sushil
Kaplanoglu, Muhammed
Moskal, Paweł
Krzemień, Wojciech
Silarski, Michał
Kozik, Tomasz
Kunikowska, Jolanta
Opis:
Positronium is abundantly produced within the molecular voids of a patient’s body during positron emission tomography (PET). Its properties dynamically respond to the submolecular architecture of the tissue and the partial pressure of oxygen. Current PET systems record only two annihilation photons and cannot provide information about the positronium lifetime. This study presents the in vivo images of positronium lifetime in a human, for a patient with a glioblastoma brain tumor, by using the dedicated Jagiellonian PET system enabling simultaneous detection of annihilation photons and prompt gamma emitted by a radionuclide. The prompt gamma provides information on the time of positronium formation. The photons from positronium annihilation are used to reconstruct the place and time of its decay. In the presented case study, the determined positron and positronium lifetimes in glioblastoma cells are shorter than those in salivary glands and those in healthy brain tissues, indicating that positronium imaging could be used to diagnose disease in vivo.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The FAZIA project in Europe : R&D phase
Autorzy:
Legouée, E.
Barlini, S.
Morelli, L.
Merrer, Y.
Marchi, T.
Cassese, C.
Ademard, G.
Cruceru, I.
Falorsi, M.
Giordano, R.
Bardelli, L.
Stefanini, A. A.
Masone, V.
Rivet, M. F.
Tortone, G.
Roscilli, L.
Desrues, P.
Casini, G.
Rosato, E.
Kajetanowicz, Marcin
Carboni, S.
Cruceru, M.
Łukasik, J.
Tobia, G.
Poggi, G.
Lavergne, L.
Edelbruck, P.
Cassese, F.
Guerzoni, M.
Pastore, G.
Pałka, Marek
Bougard, B.
Pawłowski, P.
Boiano, A.
Bruno, M.
Le Neindre, N.
Brulin, G.
Piasecki, E.
Seredov, V.
Pontoriere, G.
Zipper, W.
Meoli, A.
Chbihi, A.
Di Meo, P.
Pârlog, M.
Huss, C.
Pasquali, G.
Vanzanella, E.
Paduano, G.
Borcea, R.
D’Aquino, B.
Kordyasz, A.
Gruyer, D.
Ordine, A.
Vitiello, G.
Frankland, J. D.
Sosin, Zbigniew
Marini, P.
Barbey, S.
Pain, C.
Bini, M.
Valdré, S.
Maiolino, C.
Scarlini, E.
Anastasio, A.
Petrascu, H.
Degerlier, M.
Korcyl, K.
Wanlin, E.
Hamrita, H.
Passeggio, G.
Wieloch, Andrzej
Negoita, F.
Santonocito, D.
Energico, S.
Galichet, E.
Ciolacu, L.
Vigilante, M.
Bougault, R.
Boisjoli, M.
Gasior, K.
Kozik, Tomasz
Grzeszczuk, A.
Kulig, Przemysław
Rauly, E.
Vient, E.
Martel, I.
Cinausero, M.
De Fazio, B.
Twaróg, Tomasz
Borderie, B.
Sierpowski, Dominik
Vanzanella, A.
Rocco, R.
Salomon, F.
Piantelli, S.
Bonnet, E.
Serra, S.
Lopez, O.
Spitaels, C.
Alba, R.
Spadaccini, G.
Dueñas, J. A.
Petcu, M.
Gramegna, F.
Olmi, A.
Opis:
The goal of the FAZIA Collaboration is the design of a new-generation $4\pi$ detector array for heavy-ion collisions with radioactive beams. This article summarizes the main results of the R&D phase, devoted to the search for significant improvements of the techniques for charge and mass identification of reaction products. This was obtained by means of a systematic study of the basic detection module, consisting of two transmission-mounted silicon detectors followed by a CsI(Tl) scintillator. Significant improvements in $\Delta$ E-E and pulse-shape techniques were obtained by controlling the doping homogeneity and the cutting angles of silicon and by putting severe constraints on thickness uniformity. Purposely designed digital electronics contributed to identification quality. The issue of possible degradation related to radiation damage of silicon was also addressed. The experimental activity was accompanied by studies on the physics governing signal evolution in silicon. The good identification quality obtained with the prototypes during the R&D phase, allowed us to investigate also some aspects of isospin physics, namely isospin transport and odd-even staggering. Now, after the conclusion of the R&D period, the FAZIA Collaboration has entered the demonstrator phase, with the aim of verifying the applicability of the devised solutions for the realization of a larger-scale experimental set-up.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 15

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