BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The development of the QETIR image reconstruction software for the Total-Body J-PET application DTSTART;VALUE=DATE-TIME:20220714T151000Z DTEND;VALUE=DATE-TIME:20220714T152500Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-767@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Meysam Dadgar\; Jagiellonian University\, Poland () \nAuthors:\nMeysam Dadgar\, Faranak Tayefi Ardebili\n\nThe unique features that PET scanners have provided to the specialists in diagnosing diseases and investigating the physiology of the body have facilitated the develop ment of a more advanced generation of tomographs in order to improve their performance\, called Total-Body PET scans.\nDue to the larger AFOV\, TB P ET scanners provide more extensive detection coverage around the patient's body. They have significantly increased the probability of detecting phot ons emitted from the patient's body. This issue has increased the sensitiv ity of TB PETs and enhanced their accuracy in detecting and locating tumor s with smaller dimensions. This unique feature can increase the chances of saving the patient by detecting tumors in the early stages.\nAlong with t he numerous advantages of developing TB PETs\, the construction cost and m aintenance of these systems\, due to a large number of electronic componen ts and detectors\, have become one of the biggest obstacles to their wides pread use in diagnostic and research centers.\nJ-PET collaboration at Jagi ellonian University\, as one of the leading research groups in developing cost-effective larger AFOV PET based on plastic scintillators\, has been a ble to introduce a new generation of the systems mentioned above by overco ming the existing limitations.\nBesides the hardware challenges in the con struction of TB PET systems\, the demand to develop image reconstruction s oftware that can support these complex systems was felt due to the signifi cant differences between these systems and current clinical tomographs.\nI n addition to the cases mentioned above\, in TB J-PET\, due to the utiliza tion of dual-layer configuration and large AFOV\, most of the image recons truction software are not able to support it.\nThe Medisip group developed QETIR (Quantitative Emission Tomography Iterative Reconstruction) at Gent University as a flexible software that has overcome the existing challeng es in TB PETs image reconstruction.\nThe main aim of this study is to inve stigate the performance of QETIR image reconstruction software in J-PET sc anners with different AFOVs\, and single and multi-layer configurations.\n \nhttps://indico.koza.if.uj.edu.pl/event/7/contributions/767/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/767/ END:VEVENT BEGIN:VEVENT SUMMARY:129m\,131m\,133mXe – for gamma-MRI\, a novel medical imaging tec hnique DTSTART;VALUE=DATE-TIME:20220714T145500Z DTEND;VALUE=DATE-TIME:20220714T151000Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-711@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Mateusz Chojnacki\; CERN\, Switzerland ()\nGamma-MRI is a future imaging modality that should allow the simultaneous exploitat ion of the sensitivity of gamma-ray detection (SPECT) and the spatial reso lution and flexibility of MRI [1]. The approach uses\, like in SPECT\, gam ma-emitting nuclei\, which are highly polarized and thus exhibit anisotrop ic gamma-ray emission\, whereas their spins are rotated by rf pulses\, lik e in MRI. The signal in gamma-MRI is the change in the ratio of gamma rays emitted longitudinally and transversally to the spin (and magnetic field) direction [2]. The first nuclei used in the project are 11/2− spin isom ers 129mXe (T1/2=8.9 days)\, 131mXe (T1/2=11.8 days) and 133mXe (T1/2= 2.2 days).\n\nThe efficient production and purification of the 129m\,131m\,133 mXe is one of the first milestones in the gamma-MRI project. This contribu tion will present two main methods of production tested so far: neutron ir radiation of enriched stable 128Xe (product: 129mXe) and 130Xe (product: 1 31mXe) in the RHF reactor at Intitute Laue-Langevin (ILL\; Grenoble\, Fran ce) and at the MARIA reactor in the National Centre for Nuclear Research ( NCBJ\; Świerk\, Poland)\, and ion-implantation of 129m\,131m\,133mXe into gold foils at the ISOLDE facility in CERN (Switzerland). Both methods pro vide high values of xenon isotopes activities that can be extracted effici ently and used in polarization experiments.\n\nThe presentation will give a brief introduction to the gamma-MRI technique and will mention the diffe rent elements of this EU-funded project. It will then concentrate on the w ork performed at the CERN\, namely production and purification of the Xe i somers.\n\nhttps://indico.koza.if.uj.edu.pl/event/7/contributions/711/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/711/ END:VEVENT BEGIN:VEVENT SUMMARY:Preliminary results of determining Modular J-PET spatial resolutio n DTSTART;VALUE=DATE-TIME:20220714T144000Z DTEND;VALUE=DATE-TIME:20220714T145500Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-710@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Faranak Tayefi Ardebili\; Jagiellonian University\, Poland ()\nModular J-PET is the latest prototype of the Jagiellonian-PET\, based on long plastic scintillator strips [2]. The modularity of this pro totype allows for cost-effective imaging of multi-photon annihilation and positronium imaging\, straightforward assembly\, and portability [1-3]. Mo reover\, due to the low weight of a scanner\, it is possible to perform an examination with a static bed and mobile detection system closing on the patient from its side\, which cancels the need for large rooms in clinics [1-3].
\nThe Modular J-PET consists of 24 modules which are arranged in regular 24-sided polygons circumscribing a circle with a diameter of 73.9 cm [4]. Each module was built out of 13 scintillator strips placed next to each other with a length of 50 cm and a cross-section of 6 mm × 24 mm\, read out of scintillation light on both ends is done by an analog Silicon Photomultipliers (SiPMs). This study presents preliminary results of the s patial resolution measurement of the Modular J-PET tomograph performed wit h Na source placed at various positions inside the detector according to t he NEMA_NU 2-2018 standards [5]. The collected data were analyzed using a specialized software program called the J-PET Framework\, which is based o n the C++ architecture [6]. Experimental data were verified with the GATE simulations [7]. In simulations of the Modular J-PET spatial resolution\, a back-to-back gamma source was simulated in the same position as used in the experiment [8]. The results of the simulation were reconstructed with the QETIR package.\n\nAcknowledgments:\nThe authors acknowledge support by the TEAM POIR.04.04.00-00-4204/17 program\, the NCN grant no. 2021/42/A/S T2/00423 and the SciMat and qLife Priority Research Areas budget under the program Excellence Initative - Research University at the Jagiellonian Un iversity.\n\nhttps://indico.koza.if.uj.edu.pl/event/7/contributions/710/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/710/ END:VEVENT BEGIN:VEVENT SUMMARY:The charm of charm DTSTART;VALUE=DATE-TIME:20220714T142500Z DTEND;VALUE=DATE-TIME:20220714T144000Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-709@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Jakub Ryżka\; AGH University of Science and Technol ogy\, Poland ()\nThe existence of CP violation in charm particle decays ha s been elusive for a long time for experimentalists and has been observed for the first time in 2019 in the LHCb experiment. During the LHC Run 1 an d Run 2\, the LHCb collaboration collected huge data samples on a scale ne ver seen before. These data enable the most sensitive searches for CP viol ation ever performed. These measurements are interpreted as precise tests of the Standard Model. In the presentation\, the latest results achieved i n charm decays will be reviewed and two innovative model-independent techn iques (Kernel Density Estimation and Energy test) for searching for CP vio lation in charm baryons will be discussed.\n\nhttps://indico.koza.if.uj.ed u.pl/event/7/contributions/709/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/709/ END:VEVENT BEGIN:VEVENT SUMMARY:3D printed lightweight and modular lithium-ion Uninterruptible Pow er Booster for medical devices DTSTART;VALUE=DATE-TIME:20220714T141000Z DTEND;VALUE=DATE-TIME:20220714T142500Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-708@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Gabriel Moskal\; Jagiellonian University\, Poland () \nAdvanced devices for diagnostics and medical therapy require a constant and stable power source. The disadvantage of commonly used uninterruptible power supply (UPS) is the heavy weight[1]\, centralization and the need t o use specially prepared rooms and dedicated electrical installations. The aim of the presented research is to prepare a safe\, economic and modular Uninterruptible Power Booster (UPB). A UPB can increase the insufficient power output of the mains supply\, guaranteeing power for the pre-planned time. Low price and modularity are possible due to the use of 3D printing and Li-ion cells\, which will allow the construction of UPB installed in t he immediate vicinity of the protected device. Among available technologie s of chemical energy storage\, Li-ion cells are characterized by high grav imetric and volumetric energy density[1]. Currently\, liquid electrolytes( LE) are used in Li-ion cells\, which have good ionic conductivity\, but ar e flammable\, toxic and sensitive to lithium dendrite overgrowth\, which m ay lead to an internal short circuit and damage to a given module. For saf ety reasons\, a much better solution than LE would be solid electrolytes(S E)\, which would not be flammable and hazardous to the environment. Due to the fact that SE constitute a barrier to lithium dendrites\, they can ext end the working time of li-ion cells[2]. Currently\, there is no known mat erial that would fit well as a SE for li-ion cells. There are several mate rials under development\, but they are not ready for industrial applicatio ns[3\,4].This presentation concerns the research conducted on SE\, synthes ized with the use of cheap\, environmentally safe materials. For this purp ose\, syntheses of materials based on silicon glass and polysaccharides we re performed. Methods of syntheses and the results for measuring the ionic conductivity of the tested electrolytes and an example UPB for J-PET mobi le tomograph will be presented[5\,6]. The use of this solution with statio nary devices will allow to reduce electricity costs by loading the energy storage using a less expensive night tariff\, and then using the collected energy during the day\, and also to install the device in a room without access to a UPS system.\n[1]S. Anuphappharadorn Et al.\, “Comparison the economic analysis of the battery between lithium-ion and lead-acid in PV stand-alone application” Energy Procedia\,56(2014)352-358\n[2]J. Xie\, Y . Lu\, “A retrospective on lithium-ion batteries” Nature Communication s\,11(2020)2499\n[3]F. Zheng Et al.\,” Review on solid electrolytes for all-solid-state lithium-ion batteries” Journal of Power Source\,389(2018 )198-213\n[4]A. Manthiram Et al.\, “Lithium battery chemistries enabled by solid-state electrolytes” Nature Reviews Materials\,2(2017)16103\n[5] P. Moskal\, E. Stępień\, “Prospects and Clinical Perspectives of Total -Body PET Imaging Using Plastic Scintillators” PET Clinics\,15(2020)439- 452\n[6]P. Moskal et al.\, “Positronium in medicine and biology” Natur e Reviews Physics\,1(2019)527-529\n\nhttps://indico.koza.if.uj.edu.pl/even t/7/contributions/708/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/708/ END:VEVENT BEGIN:VEVENT SUMMARY:Unsupervised learning for pixel mask clustering and cluster tracki ng in LHCb’s Velopix sensor calibration DTSTART;VALUE=DATE-TIME:20220714T135500Z DTEND;VALUE=DATE-TIME:20220714T141000Z DTSTAMP;VALUE=DATE-TIME:20260720T190442Z UID:indico-contribution-54-706@indico.koza.if.uj.edu.pl DESCRIPTION:Speakers: Maciej Majewski\; AGH University of Science and Tech nology\, Poland ()\nThe VELO detector is one of the core elements of the L HCb spectrometer. Its1\nupcoming upgrade will consist of a new type of Vel opix sensor. It branches from a2\nMedipix family of silicon pixel matrix s ensors. One of its operational challenges3\nwith future data taking at the Large Hadron Collider will be the ability to detect4\nfaulty (masked) pix els and monitor them. In this work\, we propose a method for5\nclustering the faulty pixels and tracking the progression of the clusters in time. We 6\ncompare two methods of clustering (DBSCAN and OPTICS) and their influen ce7\non the proposed tracking method\, using a simulated dataset of masked pixels.\n\nhttps://indico.koza.if.uj.edu.pl/event/7/contributions/706/ LOCATION:Collegium Novodvorscianum URL:https://indico.koza.if.uj.edu.pl/event/7/contributions/706/ END:VEVENT END:VCALENDAR