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2nd CERN Baltic Conference (CBC 2022)

10–12 Oct 2022
National Centre of Physical and Technological Sciences
Europe/Vilnius timezone

CBC 2022 conference contacts

Contribution List

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  1. 66. Registration to CBC2022
    10/10/2022, 09:30
  2. 67. Welcome words
    10/10/2022, 09:50
  3. 68. Baltic Assembly and CERN
    Prof. Jānis Vucāns (President of the Baltic Assembly)
    10/10/2022, 10:00
  4. 69. Baltic Ministries and CERN
    10/10/2022, 10:10
  5. 70. Overview of CERN
    Rolf Heuer (Deutsches Elektronen-Synchrotron (DE))
    10/10/2022, 10:20
  6. 85. CERN Baltic Group
    Ants Koel (TalTech)
    10/10/2022, 10:50
  7. 71. CERN Activities in Latvia
    Prof. Toms Torims (Riga Technical University (LV))
    10/10/2022, 11:20
  8. 83. International Masterclasses
    Andrius Juodagalvis (Vilnius University (LT)), Dr Aušra Kynienė (Vilnius university Physics faculty, Experimental nuclear and particle physics center), Dr Brigita Abakeviciene (Kaunas University of Technology)
    10/10/2022, 11:40
  9. 72. CERN Teacher Program
    Jeff Wiener (CERN)
    10/10/2022, 11:50
  10. 73. Millennium Schools Programme
    Judita Šarpiene
    10/10/2022, 12:00
  11. 74. Network of Lithuanian STEAM Education Centres
    Paulius Tamošiūnas
    10/10/2022, 12:10
  12. 84. VILNIUS TECH Distance Learning Platform "Future Engineering"
    Henrikas Mykolaitis
    10/10/2022, 12:20
  13. 75. Panel discussion
    10/10/2022, 12:30
  14. 76. Estonian ILO experience
    Robert Aare (Estonian Business and Innovation Agency), Robert Aare (National Institute of Chemical Physics and Biophysics (EE))
    10/10/2022, 14:20
  15. 77. Do you have a femtosecond @ CERN
    Linas Giniūnas (Light Conversion)
    10/10/2022, 14:40
  16. 78. High-performance electronic oscilloscopes and generators
    Jakovas Rososkis (Eltesta)
    10/10/2022, 14:50
  17. 79. Panel discussion
    10/10/2022, 15:00
  18. 33. Axions in the sky and on tables
    Hyungjin Kim (DESY)
    11/10/2022, 09:25
  19. 34. Higgs pair production at CMS
    Alexandra Carvalho Antunes De Oliveira (Vilnius University (LT))
    11/10/2022, 10:10
  20. 35. Search for Higgs boson pair production in WWWW, WWtautau, and tautautautau decay modes based on proton-proton collision data recorded by the CMS detector in LHC Run 2
    Karl Ehataht (National Institute of Chemical Physics and Biophysics (EE))
    11/10/2022, 10:30
  21. 36. Prospects for Di-Higgs boson searches with multilepton final states in the qqHH production mode
    Norman Seeba
    11/10/2022, 10:50
  22. 37. Top quark physics results from CMS
    Markus Seidel (Riga Technical University (LV))
    11/10/2022, 11:10
  23. 38. ttbar simulation and jet energy studies (towards a measurement of the ttbar mass difference at CMS)
    Andris Potrebko (Riga Technical University (LV))
    11/10/2022, 11:50
  24. 39. Searching for Dark Matter Subhalos in Astronomical Data using Deep Learning
    Sven Põder (National Institute of Chemical Physics and Biophysics (EE))
    11/10/2022, 12:10
  25. 40. Evolutionary algorithms for hyperparameter optimization in machine learning for application in high energy physics
    Laurits Tani (National Institute of Chemical Physics and Biophysics (EE))
    11/10/2022, 12:30
  26. 82. Baltic CMS TIER II HPC grid – a scaleable federated cloud for CERN’s CMS computational needs
    Mr Janis Irbe (Riga Technical University)
    11/10/2022, 12:50
  27. 42. Yukawa couplings in the Grimus-Neufeld model
    Thomas Gajdosik (Vilnius University (LT))
    11/10/2022, 14:00
  28. 41. Charged lepton flavor violation in the Grimus-Neufeld model
    Vytautas Dudenas (Vilnius University (LT))
    11/10/2022, 14:20
  29. 43. On-Shell renormalization of scalar sectors
    Mr Simonas Draukšas (Vilnius University (LT))
    11/10/2022, 14:40
  30. 44. Critical dark matter
    Venno Vipp (Nat. Inst. of Chem.Phys. & Biophys. (EE))
    11/10/2022, 15:00
  31. 45. The Zb\bar{b} vertex in a CP-conserving Left-Right model
    Darius Jurciukonis (Vilnius University (LT))
    11/10/2022, 15:20
  32. 46. Advanced Particle Therapy center in the Baltic States
    Kristaps Palskis (Riga Technical University (LV)), Prof. Toms Torims (Riga Technical University (LV))
    11/10/2022, 16:00
  33. 47. Advancements of integration and mechanical design of gantries for ion-therapy
    Luca Piacentini (Riga Technical University (LV))
    11/10/2022, 16:20
  34. 48. Physical and biological property comparisons of 4He and 3He ion beams for applicability in radiation therapy
    Kristaps Palskis (Riga Technical University (LV))
    11/10/2022, 16:40
  35. 49. Baltic representation in Innovative European Radionuclide Network project - PRISMAP
    Prof. Maija Radzina
    11/10/2022, 17:00
  36. 50. Current status of radiation therapy in Lithuania
    Erika Korobeinikova (LSMU)
    11/10/2022, 17:20
  37. 51. Miniaturised Linear Accelerators for Medical Imaging
    Salva Barranco Cárceles (University of Edinburgh)
    11/10/2022, 17:40
  38. 52. Production, extraction and mass-separation of medical 43,44,47Sc radionuclides at the CERN-MEDICIS facility
    Edgars Mamis (University of Latvia (LV))
    12/10/2022, 10:00
  39. 53. Chemical Separation and Purification of Stable 45Sc from CERN-Medicis Mass-Separator Collection Foils
    Patricija Kalnina
    12/10/2022, 10:20
  40. 55. MCNP calculations of the high-power LIEBE molten target at CERN for the production of radioisotopes
    Benjaminas Togobickij
    12/10/2022, 10:40
  41. 54. Dose rates and specific activities of LIEBE target at CERN after the irradiation with the high-power proton beam
    Andrius Slavickas (Lithuanian Energy Institute, Laboratory of Nuclear Installation Safety)
    12/10/2022, 11:00
  42. 56. Superconducting magnet core fixation and alignment system
    Mr Janis Vilcans (Riga Technical University (LV))
    12/10/2022, 11:40
  43. 57. RTU High energy physics and accelerator technology centre activities in Accelerator Projects
    Andris Ratkus (Riga Technical University (LV))
    12/10/2022, 12:00
  44. 58. Research on the design development of accelerator components by additive manufacturing
    Guntis Pikurs (Riga Technical University (LV))
    12/10/2022, 12:20
  45. 59. Design of DTL for acceleration of ions with charge-to-mass ratio of 1/2 with a potential production of radioisotopes
    Lazar Nikitovic (Riga Technical University (LV))
    12/10/2022, 12:40
  46. 60. Compact Linear Collider: Investigation of electrical breakdown phenomena using multiscale and multiphysics simulations
    Prof. Veronika Zadin (University of Tartu (EE))
    12/10/2022, 14:00
  47. 61. Laser Polishing of Additively Manufactured RFQ Prototype Content
    Viesturs Lacis (Riga Technical University (LV))
    12/10/2022, 14:20
  48. 88. Diffusion processes in metals at the nanoscale: experimental studies
    Sergei Vlassov
    12/10/2022, 14:40
  49. 62. Comparison of Electrochemical Systems for Sensing Redox Active Molecules
    PI Ausra Baradoke (BaradokeLab)
    12/10/2022, 15:00
  50. 63. AEgIS upgrades and Phase 2 developments
    Valts Krumins (University of Latvia (LV))
    12/10/2022, 15:40
  51. 64. Characterication and Calibration of the RD53B CMS Chip Content
    Marijus Ambrozas (Vilnius University (LT))
    12/10/2022, 16:00
  52. 65. Development of the MTD Control and Safety Systems at CMS
    Antra Gaile (Riga Technical University (LV))
    12/10/2022, 16:20
  53. 16. Advancements of integration and mechanical design of gantries for ion-therapy
    Luca Piacentini (Riga Technical University (LV))

    This presentation outlines the recent progresses on the mechanical design and integration of components of gantries for ion-therapy of cancer, which is are crucial steps toward the development of the next ion medical machine. A comparative study of multiple scenarios was conducted based on robustness of the design, size, weight and complexity, deformation and precision performances and costs,...

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  54. 9. AEgIS upgrades and Phase 2 developments
    Valts Krumins (University of Latvia (LV))

    The Antimatter Experiment: Gravity, Interferometry, Spectroscopy (AEgIS) collaboration aims at performing spectroscopic studies and direct experimental tests of the universality of free fall also known as Weak Equivalence Principle (WEP) using antimatter-containing neutral systems (antihydrogen, positronium atoms, antiprotonic atoms).
    AEgIS Phase 1 was a feasibility study of a pulsed...

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  55. 87. Axions in the sky and on tables
    Hyungjin Kim (DESY)

    In this talk, I will discuss several different ways to search for axion-like particles in the sky and on tables. I will briefly review recent discussions on the hierarchy problem and how it leads to a new insight for new physics search, especially in the context of axion-like particles. We then discuss several different ideas for terrestrial axion searches and astrophysical searches. As a...

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  56. 81. Baltic CMS TIER II HPC grid – a scaleable federated cloud for CERN’s CMS computational needs
    Mr Janis Irbe (Riga Technical University)

    Recap on recent meeting with members from the CERN Offline Computing team - an overview of CERN CMS experiment annual increase in computational and data storage requirements. Proposed architecture of federated cloud based TIER II HPC site piloted by the Riga Technical University and the University of Latvia. Opportunity to expand it to a Baltics scale scientific HPC resource pool.

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  57. 22. Characterication and Calibration of the RD53B CMS Chip
    Marijus Ambrozas (Vilnius University (LT))

    The High-Luminosity LHC is expected to start its operation in 2029. All the detector experiments around the LHC will also have significant improvements (the so-called Phase-2 upgrade) to ensure optimal performance with 10 times higher than nominal instantaneous luminosity. The innermost layers of the upgraded detectors must have higher granularity with more readout channels, and be...

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  58. 18. Charged lepton flavor violation in the Grimus-Neufeld model
    Vytautas Dudenas (Vilnius University (LT))

    We provide constraints on the connection between the scalar and the neutrino sector from the charged lepton flavor violating decays in the tiny seesaw scenario of the Grimus-Neufeld model. We discuss the similarities between the Grimus-Neufeld model, the scotogenic model and the scoto-seesaw model in this parameter region and interpret our results in the context of all these three models.

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  59. 24. CHEMICAL SEPARATION AND PURIFICATION OF STABLE 45SC FROM CERN-MEDICIS MASS-SEPARATOR COLLECTION FOILS
    Patricija Kalnina

    Radionuclides of chemical element Scandium can be used in radionuclide targeted therapy and positron emission tomography (PET/CT), where 44Sc or 43Sc would be used for diagnostic imaging purposes and monitoring therapy response and 47Sc for therapeutic purposes or SPECT diagnostics [1].
    CERN MEDICIS (MEDical Isotopes Collected from ISolde) produces medical radionuclides by recovering the 1.4...

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  60. 8. Compact Linear Collider: Investigation of electrical breakdown phenomena using multiscale and multiphysics simulations
    Veronika Zadin (University of Tartu (EE))

    Many high electric field applications, for example, Compact Linear Collider in CERN are significantly limited by the presence of the phenomenon of electrical breakdowns. In case of sufficiently high applied electric field, even in ultra high vacuum conditions, electrical discharge appears, induces disturbances into the operating regime of the device, causes material damage and generally,...

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  61. 10. COMPARISON OF ELECTROCHEMICAL SYSTEMS FOR SENSING REDOX ACTIVE MOLECULES
    PI Ausra Baradoke (BaradokeLab)

    Abnormal amounts of ascorbic acid (AA), uric acid (UA), and dopamine (DA) can cause and be symptoms of various disorders. DA could be monitored as a potential biomarker for SARS-CoV-2 infection because it reduces the immune response during infection. Additionally, AA and UA levels also aid in infection prevention. Therefore, monitoring these analytes is in a high demand for diagnosing...

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  62. 14. CONCEPTUAL DESIGN OF ADVANCED PARTICLE THERAPY CENTER IN THE BALTIC STATES
    Kristaps Palskis (Riga Technical University (LV)), Toms Torims (Riga Technical University (LV))

    OBJECTIVE
    In the field of radiation oncology, particle therapy is promising to be more efficient cancer treatment modality due to favourable physical and biological properties over conventional gamma radiation therapy. In clinic, particle therapy has already shown benefits in treatment of paediatric oncological malignancies, brain and head and neck region tumors and other localizations in...

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  63. 86. Critical dark matter
    Venno Vipp (Nat. Inst. of Chem.Phys. & Biophys. (EE))

    We study a classically scale invariant Higgs-dilaton model of dynamical symmetry breaking extended with an extra scalar field that plays the role of dark matter. The Higgs boson is light near a critical boundary between different symmetry breaking phases, where quantum corrections beyond the usual Gildener-Weinberg approximation become relevant. This implies a tighter connection between dark...

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  64. 21. Design of DTL for acceleration of ions with charge-to-mass ratio of 1/2 with a potential production of radioisotopes
    Mr Lazar Nikitovic (Riga Technical University (LV))

    Background and Aims
    Radio-frequency linear accelerators (LINACS) are used as the first stage of particle acceleration for injection into a synchrotron. Ion accelerator complexes have found a crucial place in the medical field for cancer treatment. In that field, LINAC design requirements are very strict concerning their dimension, but at the same time, they need to be able to accelerate...

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  65. 23. Development of the MTD Control and Safety Systems at CMS
    Antra Gaile (Riga Technical University (LV))

    The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) will undergo extensive upgrades during the long-shutdown 3 (LS3) scheduled for 2026-28. One of the most prominent aspects of the upgrade will be the introduction of a new detector sub-system, the MIP Timing Detector (MTD), situated between the outer tracker and the electromagnetic calorimeter. The MTD is a timing...

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  66. 31. Diffusion processes in metals at the nanoscale: experimental studies
    Sergei Vlassov

    Cu electrodes are widely used in accelerators, for example in CLIC [1]. One of the problems arising in the accelerator is the breakdown phenomenon [2] causing damage to the accelerating structures and disturbances in the accelerated beam. The cause of the vacuum breakdowns is still under investigation and the electrodes regularly investigated for clues. According to one of the models,...

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  67. 25. Dose rates and specific activities of LIEBE target at CERN after the irradiation with the high-power proton beam
    Mr Andrius Slavickas (Lithuanian Energy Institute, Laboratory of Nuclear Installation Safety)

    The widespread approach to increasing the yield of radioactive isotopes in the accelerators is to increase the beam intensity. The creation of targets capable of accommodating these high-power beams is the main task in achieving higher radioactive isotope production. A prototype target named LIEBE (Liquid Eutectic lead Bismuth for Eurisol) was designed and assembled for that purpose at CERN....

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  68. 1. Evolutionary algorithms for hyperparameter optimization in machine learning for application in high energy physics
    Laurits Tani (National Institute of Chemical Physics and Biophysics (EE))

    In contemporary high energy physics (HEP) experiments the analysis of vast amounts of data represents a major challenge. In order to overcome this challenge various machine learning (ML) methods are employed. However, in addition to the choice of the ML algorithm a multitude of algorithm-specific parameters, referred to as hyperparameters, need to be specified in practical applications of ML...

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  69. 4. Higgs pair production at CMS
    Alexandra Carvalho Antunes De Oliveira (Vilnius University (LT))

    One of the most important parts of the physics programs for the future of the LHC is the investigation of the Higgs boson interactions. The Higgs boson potential, in particular its trilinear self-interaction, can be directly probed by looking at the Higgs boson pair production. In this presentation I will detail the searches for Higgs pairs and their combination, done by the CMS collaboration...

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  70. 19. Laser Polishing of Additively Manufactured RFQ Prototype
    Viesturs Lacis (Riga Technical University (LV))

    Additive manufacturing and laser powder bed fusion in particular are offering significant benefits in designing and manufacturing parts with complex geometry that can be used for accelerator component manufacturing. But one of main drawbacks of this technology is the surface roughness of finished product.
    The main goal of this project was to explore possibilities to reduce surface roughness...

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  71. 15. Latvia - CERN Collaboration
    Karlis Dreimanis (Riga Technical University (LV)), Toms Torims (Riga Technical University (LV))

    Update talk on Latvia - CERN collaboration covering all aspects and future perspectives

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  72. 3. MCNP calculations of the high-power LIEBE molten target at CERN for the production of radioisotopes
    Benjaminas Togobickij (Lithuanian Energy Institute)

    Higher beam powers are sought to enhance production of short-lived isotopes, therefore targets able to accommodate such powers are required. With this in mind, a liquid metal target prototype was designed and assembled at CERN, named LIEBE (LIquid Eutectic lead Bismuth for Eurisol). Flux and dose rate maps obtained from Monte Carlo simulations of a 1 mm radii monoenergetic 70 MeV – 100 $\mu$A...

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  73. 6. Miniaturised Linear Accelerators for Medical Imaging
    Salva Barranco Cárceles (University of Edinburgh)

    In a world with a fast-growing and rapidly aging population, where availability and accuracy of diagnosis is key to early detection and treatment of disease and injury, the development of enhanced medical imaging techniques will improve the wellbeing of unwell members of society. Miniaturised electron linear accelerators can be engineered to be a core component for a portable system for 3D...

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  74. 11. On-Shell renormalization of scalar sectors
    Simonas Draukšas (Vilnius University (LT))

    The renormalization in models with particle mixing is still not completely understood, as such there are many renormalization schemes. Most of the difficulty revolves around gauge-independent and numerically stable renormalization of the mixing. In our previous work we have proposed an On-Shell and all-order renormalization scheme for fermions that trivially satisfies many of the needed mixing...

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  75. 13. Physical and biological property comparisons of 4He and 3He ion beams for applicability in radiation therapy
    Kristaps Palskis (Riga Technical University (LV))

    Background and aims
    The importance and clinical significance of ion beam therapy for cancer treatment is sharply increasing due to the favorable physical and biological characteristics compared to conventional radiotherapy. With the established clinical use of proton and carbon ion beams, lately there is a growing interest for use of helium ion beams for cancer treatment due to improved...

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  76. 30. Production, extraction and mass-separation of medical $^{43,44,47}$Sc radionuclides at the CERN-MEDICIS facility
    Edgars Mamis (University of Latvia (LV))

    The CERN-MEDICIS facility at CERN specializes in extraction and mass-separation of wide range novel medical radionuclides, produced in reactions from 1.4 GeV and 1.7 GeV protons on thick targets at CERN Proton Synchroton Booster (PSB), as well as externally irradiated samples from nuclear reactors and cyclotrons. The extracted radionuclides are typically delivered in the form of singly charged...

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  77. 5. Prospects for Di-Higgs boson searches with multilepton final states in the qqHH production mode
    Norman Seeba

    CMS recently presented its first search for Higgs boson pair (HH) production in the WWWW, WWττ, and ττττ decay modes using the full LHC Run2 dataset with 138 fb^{-1} of proton proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV. The analyzed events contain two, three, or four reconstructed leptons, including electrons, muons, and hadronically decaying tau...

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  78. 17. Report on project - Advanced Particle Therapy center in the Baltic States
    Toms Torims (Riga Technical University (LV))

    Information on where we stand with the project vis-a-vis decision makers, policy implementers and medical communities

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  79. 29. Research on the design development of accelerator components by additive manufacturing
    Guntis Pikurs (Riga Technical University (LV))

    During the last decades, engineering inventions and technological developments are progressing significantly. Metal additive manufacturing and subatomic particle accelerators are relatively new technologies whose joint potential is not realized yet as an industrial solution. The main reason for that is low trustability and skepticism on quality, accuracy, and repeatability of additively...

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  80. 28. RTU High energy physics and accelerator technology centre activities in Accelerator Projects
    Andris Ratkus (Riga Technical University (LV))

    Riga Technical University High Energy Physics and Accelerator Technology centre's one of two core specialisations is accelerator technologies with established three main research directions: innovation and development of accelerator technologies; accelerator medical application and accelerator environmental applications. All those research directions are related to accelerator technology...

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  81. 2. Search for Higgs boson pair production in WWWW, WWtautau, and tautautautau decay modes based on proton-proton collision data recorded by the CMS detector in LHC Run 2
    Karl Ehatäht (National Institute of Chemical Physics and Biophysics (EE))

    The discovery of the Higgs boson by the ATLAS and CMS collaborations a decade ago launched the particle physics community to a new era of research, with the primary goal of determining other properties of the boson. While it is true that the mass of Higgs boson, measured to be around 125 GeV, was the last remaining free parameter of the Standard Model (SM), there are plenty of well-motivated...

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  82. 7. Searching for Dark Matter Subhalos in Astronomical Data using Deep Learning
    Sven Põder (National Institute of Chemical Physics and Biophysics (EE))

    The search for dark matter (DM) has grown into an endeavour spanning many orders of magnitude in terms of potential DM particle candidate masses probed by numerous direct and indirect experiments. A potential new avenue to explore the nature of DM is to test the predicted abundance of dark subhalos in the LCDM framework. According to the current model of structure formation, our Galaxy has...

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  83. 12. Searching for Dark Matter Subhalos in Astronomical Data using Deep Learning
    Sven Põder

    The search for dark matter (DM) has grown into an endeavour spanning many orders of magnitude in terms of potential DM particle candidate masses probed by numerous direct and indirect experiments. A potential new avenue to explore the nature of DM is to test the predicted abundance of dark subhalos in the LCDM framework. According to the current model of structure formation, our Galaxy has...

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  84. 80. Superconducting magnet core fixation and alignment system
    Mr Janis Vilcans (Riga Technical University (LV))

    Hadron therapy for cancer treatment has been studied for decades and also the European Organization for Nuclear Research support by doing Next Ion Medical Machine Study are still actual and by coordinating other projects. Hadron Therapy is effective due to the reduced impact on healthy tissue. Moreover, by using a rotating gantry as a tool that provides precise patient treatment angles -...

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  85. 32. The Zb\bar{b} vertex in a CP-conserving Left-Right model
    Darius Jurciukonis (Vilnius University (LT))

    We study the one-loop corrections to the Zb\bar{b} vertex in the framework of a left-right model. A CP-conserving left–right model with two additional heavy gauge-bosons, two charged scalars, two pseudoscalars and four physical scalars is under consideration. We compute the couplings in an arbitrary gauge and show that the divergent contributions cancel. However, the contributions of the new...

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  86. 26. Top quark physics results from CMS
    Markus Seidel (Riga Technical University (LV))

    Recent results on top quark properties and interactions are presented, obtained using data collected with the CMS experiment during LHC Run 2 and Run 3 at 13 and 13.6 TeV center-of-mass energies, respectively. Measurements are performed for the inclusive and differential top quark pair production cross sections in several top quark final states. The mass of the top quark is extracted using...

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  87. 27. ttbar simulation and jet energy studies (towards a measurement of the ttbar mass difference at CMS)
    Andris Potrebko (Riga Technical University (LV))

    Both CMS and ATLAS, the two general-purpose detectors at the LHC, need a vast array of large Monte-Carlo data samples, in order to probe the Standard Model. Common MC samples allow for assessing differences in detector performance and analysis strategy. A new ttbar sample based on the Sherpa generator is compared to CMS and ATLAS data using the Rivet validation framework. The measurement of...

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  88. 20. Yukawa couplings in the Grimus-Neufeld model
    Thomas Gajdosik (Vilnius University (LT))

    The Grimus-Neufeld model is an appealing minimal extension of the Standard Model that can explain neutrino masses. In the case of a very small seesaw scale the model gains approximate symmetries that allow a simpler parametrization of the Yukawa couplings. This parametrization has the additional advantage of allowing a very precise and simple display of the free parameter space of the model...

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