Thermal stabilisation and cooling system for TPC and ECAL Detectors of MPD Experiment at NICA Collider / In-beam tests of double-sided silicon strip detector modules for BM@N Experiment

Seminars

Veksler and Baldin Laboratory of High Energy Physics

Scientific and Methodical Seminar #12-2024

Date and Time: Thursday, 7 November 2024, at 11:00 AM

Место: bld. 215, room 241, Veksler and Baldin Laboratory of High Energy Physics, online on Volna

Link to join

  1. Seminar topic: “Thermal stabilisation and cooling system for the TPC and ECAL Detectors of the MPD Experiment at the NICA Collider”

    Authors: Youmna Ghoneim1,7, Sergey Movchan1, Aleksey Bazhazhin1, Aleksandr Doroshkevich1,2,3, Rafael Isayev1,4, Pavel Kudryashov1, Ilya Chepurchenko1, Grygory Arzumanyan1, Kahramon Mamatkulov1, Alexander Fedotov1, Olga Ivanshina1,3, Egor Shmanay5, Ilyia Zur5, Julia Fedotova6, Vitaly Shimansky6

    1 – Joint Institute for Nuclear Research
    2 – The Institute of Material Sciences SPA “Physics – Sun” AS RUz
    3 – Dubna State University
    4 – Innovation and Digital Development Agency, Baku, Azerbaijan
    5 – Institute for Nuclear Problems of Belarusian State University
    6 – Department of Solid-State Physics and Nanotechnology, Belarusian State University
    7 – National Research Tomsk Polytechnic University

    Speaker: Youmna Ghoneim

    Abstract:

    The thermal stabilisation and cooling systems for the TPC and ECAL Detectors for the MPD Experiment (NICA Project) are based on the water leakless concept. Realisation of such a concept put forward some specific requirements for optimal pipe, namely absence of radiation activation, resistance to chemical corrosion, a small diffusion value through the pipe wall into water (water is at pressure of about 0.5 bar), and mechanical stability and flexibility for piping on MPD.

    The present experiment is focused on the verification of plastic hoses subjected to neutron irradiation as the candidate for supplying the distilled or deionised water to the cooling system of MPD. Presuming that the hoses will be located within the area of TPC FE electronics, they should be resistant to neutron fluence of about 1011 n/cm2 (with the energy of 1 MeV). So, candidate plastic hoses were irradiated with neutrons (with an energy up to 1 MeV) with the following fluences: F1 = 109 n/cm2, F2 = 1010 n/cm2, F3 = 1011 n/cm2, and F4 = 1012 n/cm2.

    Mechanical tensile tests, Raman spectroscopy, and air permeability measurements were performed to check plastic hoses status before and after irradiation. COMSOL Multiphysics modelling software is also being used to study the selected candidate pipes. Based on the research conducted, the PVC hose was selected to be the best candidate for installing the thermal stabilisation and cooling system.


  2. Seminar topic: “In-beam tests of double-sided silicon strip detector modules for the BM@N Experiment”

    Authors: Dmitry Dementev1, Raul Arteche Diaz1,4, Cesar Ceballos Sanchez1, Anatoly Kolozhvari1, Vladimir Leontyev1,2, Nikolai Maltsev3, Yuri Murin1, Alejandro Rodriguez Alvarez1,4, Igor Rufanov1, Alexei Sheremetev1, Mikhail Shitenkov1, Vladimir Zherebchevsky4

    1 – Veksler and Baldin Laboratory of High Energy Physics, Joint Institute for Nuclear Research
    2 – Moscow State University
    3 – Saint Petersburg State University
    4 – Center of Technological Applications and Nuclear Development, Havana, Cuba

    Speaker: Dmitry Dementev

    Abstract:

    The results of the in-beam tests of the final version of the DSSD modules for the Silicon Tracking System of BM@N experiment at JINR NICA facility are presented. Each module consists of a double-sided microstrip silicon sensor and front-end electronics connected to each other via low-mass aluminum micro-cables. Investigations of the module characteristics and tests of the readout electronics were done at proton synchrocyclotron SC-1000 in Petersburg Nuclear Physics Institute. Signal-to-noise ratio, spatial resolution and detection efficiency were measured. Performance of the areas with strips with a second metallisation layer and strips with bonding failures was studied. Dependencies of the main operation parameters of the modules on the bias voltage and threshold were also obtained. The average registration efficiency of the modules resulted in values higher than 99% with signal-to-noise ratio typical values for both sides of the sensor not less than 21 and a spatial resolution of 15.4 μm.