SCIENCE BRINGS NATIONS TOGETHER International Workshop on Spin Physics<br>at NICA (SPIN-Praha-2018)

9 Jul 2018, 07:00 → 13 Jul 2018, 17:00 Europe/Prague

Charles University, Prague

Monday 9 July

08:00 → 09:30 Registration

09:30 → 10:00 Opening

Convener: Prof. Miroslav Finger (JINR/CUNI)

09:30 Opening

Speaker: Prof. Miroslav FINGER (JINR/CUNI)

Slides finger.pdf

09:45 Welcome

Speaker: Prof. Ladislav SKRBEK (CUNI)

Slides skrbek.ppt

10:00 → 11:00 JINR

Convener: Prof. Miroslav Finger (JINR/CUNI)

10:00 JINR: science brings nations together

Speaker: Prof. Boris Sharkov (JINR)

Slides sharkov.ppt

10:30 NICA facility at JINR: physics goals and status of the construction

Speaker: Dr Dmitry Peshekhonov (JINR)

Slides peshekhonov.pptx

11:00 → 11:30 Coffee break

11:30 → 13:00 Theory I

Convener: Prof. Miroslav Finger (JINR/CUNI)

11:30 Theoretical review

Speaker: Prof. Oleg Teryaev (JINR)

Slides teryaev.pdf

12:00 Study of exclusive processes at NICA

We propose to investigate at NICA exclusive vector mesons production, essentially $J/\Psi$ production which is dominated by a gluon GPDs. These reactions is similar to the corresponding process in lepton-proton scattering and determined by GPDs. Investigation of the exclusive D-Y production in the proton-proton reaction determined by two GPDs effects is in progress incollaboration with O. Teryaev and P. Kroll. We find that $d \sigma/(dQ^2 dt1 dt2) \sim 20-30 \mbox{pb/GeV}^6$ at small $t1, t2$ and $Q^2=5\mbox{GeV}^2$ at NICA energies. This reaction can be studied at NICA and give an additional excess to GPDs.

Speaker: Dr Sergey Goloskokov (JINR, BLTP)

Slides goloskokov.pdf

12:30 Multiparton structure of nucleon and and dynamics of particle and nuclei production

Speaker: Prof. Victor Kim (Petersburg Nuclear Physics Institute NRC KI & SPbPU)

Slides kim.pdf

13:00 → 14:30 Lunch

14:30 → 16:00 Spin physics experiments I

Convener: Dr Dmitry Peshekhonov (JINR)

14:30 Physics at COMPASS

Speaker: Dr Oleg Denisov (INFN-Torino/CERN)

Slides denisov.pptx

15:00 Recent SIDIS and Drell-Yan results from COMPASS

Speaker: Dr Bakur Parsamyan (CERN)

Slides Parsamyan_SPIN_Praha_2018.pdf

15:30 Recent progress of the JEDI Collaboration

Speaker: Artem Saleev (Institut für Kernphysik, Forschungszentrum Jülich)

Slides 3-saleev.pdf

16:00 → 16:30 Coffee break

16:30 → 18:00 Theory II

Convener: Dr Dmitry Peshekhonov (JINR)

16:30 Off-shell initial state effects in DY processes at NICA

Precise theoretical and experimental study of angular distributions of Drell-Yan leptons, produced in pp-collisions, demonstrates the important role of initial-state interactions and influence of intrinsic transverse momenta of initial-state partons. If annihilating initial-state quark and anti-quark have transverse momenta they should be off-shell. The one way to preserve gauge-invariance of scattering amplitudes in all orders of perturbative QCD is consideration of initial-state partons as Reggeized partons which are constituents of Lipatov’s effective theory. In this talk we present results of calculations of invariant mass, transverse momentum spectra of Drell-Yan lepton pairs and virtual-photon polarization observables in unpolarized pp-collisions at NICA energy which were obtained in the Parton Reggeization Approach. The properties of Boer-Mulders function in PRA and prospects for taking into account the polarization of initial-state protons will be also discussed.

Speaker: Prof. Vladimir Saleev (Samara National Research University)

Slides 1-saleev.pdf

17:00 Simulation of elastic and inelastic proton-proton interactions

Speaker: Dr Vladimir Uzhinsky (LIT, JINR)

Slides uzhinsky.ppt

17:30 Kinetics of polarization and filtering

A general kinetic equation is used to describe the evolution of polarization in non-relativistic scattering. The most detailed consideration is performed for the case of spin 1/2 projectile particle interacting with spin 1/2 particle of a target. The solution of the kinetic equation for the case of zero initial polarization is presented. The case of filtering, when some particles are scattered out of the beam, is also discussed. Calculations are performed for antiproton polarization buildup during scattering off a polarized proton target. The predictions for the polarization degree and for the time of polarization obtained within different potential models are presented.

Speaker: Sergey Salnikov (Budker Institute of Nuclear Physics)

Slides salnikov.pdf

18:30 → 21:00 Welcome party

Tuesday 10 July

09:30 → 13:00 Polarised beams at NICA

Convener: Prof. Roumen Tsenov (LHEP JINR)

09:30 Polarised beams at the NICA collider

Speaker: Prof. Alexander Kovalenko (Joint Institute for Nuclear Research)

Slides kovalenko.ppt

10:00 Spin transparent NICA acceleration chain

Speaker: Dr Iurii Filatov (JINR)

Slides filatov.pdf

10:30 Acceleration of polarized protons in the Nuclotron

One of the main tasks for the NICA project is colliding beams of polarized protons and deuterons. Polarized particles are supposed will be accelerated from source up to top energy in existing synchrotron Nuclotron. Acceleration of polarized deuterons already have been done. We consider in this paper all depolarizing spin resonances in Nuclotron for protons and suggest methods to overcome them.

Speaker: Prof. Yuri Shatunov (Budker institute of nuclear physics)

Slides shatunov.pptx

11:00 Coffee break

11:30 The SPI source of polarized ions for the NUCLOTRON

The high intensity pulsed source of polarized ions (SPI) has been developed at JINR in collaboration with INR RAS for injection of polarized deuterons and protons into the Nuclotron and future collider of heavy and light ions NICA. The SPI is an atomic beam-type polarized ion source with a charge-exchange plasma ionizer and a storage cell in the ionization region. The source was commissioned and used in the NUCLOTRON runs in 2016 and February – March 2017. Polarized and unpolarized deuteron beams as well as polarized proton beam were produced to accelerate in the NUCLOTRON. Deuteron beam polarization of 0.6-0.9 of theoretical values for different modes of high frequency transition units has been measured with the NUCLOTRON ring internal polarimeter for the accelerated deuteron and proton beams.

Speaker: Dr Victor Fimushkin (Joint Institute for Nuclear Research)

Slides fimushkin.ppt

12:00 The absolute polarimeter APol for the NICA collider

Conceptual design of the absolute polarimeter APol with an internal polarized atomic hydrogen/deuterium jet target for NICA collider is presented. It is proposed to install the polarimeter into the “warm” gap of the collider ring arc. The polarized jet will cross both accelerated beams. The jet target is based on the classical atomic beam source principle. Expected target thickness of the jet in the interaction regions is 1012 atom/cm2. Polarization of the atomic hydrogen/deuterium jet will be measured by Breit-Rabi polarimeter placed under collider ring into a jet catcher volume. APol will utilize a reaction of elastic scattering of identical nuclei (protons or deuterons).

Speaker: Mikhail Kulikov (Joint Institute for Nuclear Research)

Slides kulikov.pdf

12:30 Status of the New Low Energy Polarimeter at the Nuclotron

Conceptual design of a new universal low energy polarimeter at Nuclotron is presented. It is proposed to install the new polarimeter behind linear accelerator LU-20 instead of old low energy polarimeter (LEP). The 3 He target of this setup allows to measure both the vector polarization of protons and the vector and tensor polarization of deuterons. It is assumed that new design of polarimeter will make it possible to measure vector and tensor polarization of deuterons at the same time. The dipole magnet will be used to remove H 2+ component in deuteron beam. Fabrication of the basic parts of the modern polarimeter is in progress now.

Speaker: Roman Kuzyakin (JINR)

Slides kuzyakin.pptx

13:00 → 14:30 Lunch

14:30 → 15:30 The Spin Physics Detector

Convener: Dr Alexander Nagaytsev (JINR)

14:30 SPD project and detector

Speaker: Prof. Roumen Tsenov (LHEP JINR)

Slides 1-tsenov.pptx

15:00 SPD magnetic system

Speaker: Prof. Alexander Kovalenko (Joint Institute for Nuclear Research)

Slides 2-kovalenko.ppt

15:30 → 16:00 Coffee break

16:00 → 17:00 Discussion

Wednesday 11 July

09:30 → 13:00 SPD detector

Convener: Dr Michael Finger (JINR)

09:30 Preliminary SPD design

Speaker: Ivan Moshkovskii (JINR)

Slides 1_-_moshkovskii.pdf

10:00 SPD silicon inner tracker

Speaker: Dr Nikolay Zamyatin (JINR, Dubna)

Slides 2-zamyatin.pptx

10:30 SPD tracking system

Speaker: Dr Temur Enik (JINR)

Slides 3-enik.pptx

11:00 Coffee break

11:30 ECAL

Speaker: Dr Oleg Gavrishchuk (JINR)

Slides gavrishchuk.pdf

12:00 Preliminary test beam results for the muon range system prototype

Speaker: Dr Alexander Verkheev (JINR)

Slides 2-verkheev.pdf

12:30 Software framework for the experiments at NICA

Speaker: Dr Oleg Rogachevskiy (JINR)

Slides 3-rogachevskiy.pdf

13:00 → 14:30 Lunch

14:30 → 16:00 Physics at the SPD I

Convener: Oleg Teryaev (JINR)

14:30 Physics with prompt photons at SPD

Speaker: Dr Alexey Guskov (JINR)

Slides 1-guskov.pdf

15:00 On some proposals to SPD spin physics program

Some possible physical tasks in context of SPD experiment are proposed. Among them are the following: Gerasimov–Drell–Hearn sum rules for deuteron are discussed; possibility of QCD-instanton-induced effects manifestation is considered; contribution of two-photon mechanism of lepton pairs production is estimated. Also some results of modeling of detector magnet geometry are presented.

Speaker: Prof. Raman Shuliakouski (Institute of Applied Physics National Academy of Sciences of Belarus)

Slides shulyakovsky.pptx

15:30 Physical program for measuring Drell-Yan processes with SPD

Speaker: Dr Alexander Nagaytsev (JINR)

Slides 3-nagaytsev.pdf

16:00 → 16:30 Coffee break

16:30 → 17:30 Spin physics experiments II

16:30 Analysis of the possibility of studying the asymmetry of pions production in collisions of transversely polarized protons and deuterons at the VBLHEP-JINR facilities

Collisions of transversely polarized nucleons are of interest for understanding their structure. In the report, we discuss the possibilities of studying the asymmetry of pions production in collisions of transversely polarized protons and deuterons on the MPD detector, which is created in JINR.

Speaker: Prof. Anatoly Litvinenko (Joint Institute for Nuclear Research, Veksler and Baldin Laboratory of High Energy Physics)

Slides 1-litvinenko.pdf

17:00 Components of polarization-transfer to a bound proton in a deuteron measured by quasi-elastic scattering

I will report measurements of the transverse (Px and Py) and longitudinal (Pz) components of the polarization transfer to a bound proton in the deuteron via thereaction, over a wide range of missing momentum. The measurements were done at the Mainz Microtron (MAMI). A precise determination of the electron beam polarization reduces the systematic uncertainties on the individual components, to a level that enables a detailed comparison to a state-of-the-art calculation of the deuteron that uses free-proton electromagnetic form factors. We observe very good agreement between the measured and the calculated Px/Pz ratios, but deviations of the individual components. Our results cannot be explained by medium modified electromagnetic form factors. They point to an incomplete description of the nuclear reaction mechanism in the calculation.

Speaker: Prof. Israel Mardor (Tel Aviv University)

Slides 2-mardor.pptx

19:00 → 23:00 Workshop dinner

Thursday 12 July

09:30 → 13:00 Physics at the SPD II

Convener: Dr Alexey Guskov (JINR)

09:30 Reconstruction of Drell-Yan events in various types of magnetic systems

Speaker: Artem Ivanov (Joint Institute for Nuclear Research)

Slides 1-ivanov.pdf

10:00 Background studies for Drell-Yan measurements

Speaker: Ruslan Akhunzyanov (JINR)

Slides 2-akhunzyanov.pdf

10:30 Feasibility of Drell-Yan measurements with SPD

Speaker: Dr Alexander Nagaytsev (JINR)

Slides 3-nagaytsev.pdf

11:00 Coffee break

11:30 Photons in the SPD detector

Speaker: Aierke Rymbekova (JINR)

Slides 1-rymbekova.pdf

12:00 Possible J/psi production study at the SPD

Speaker: Igor Denisenko (JINR)

Slides 2-denisenko.pdf

12:30 Phenomena with large hadron Pt

Speaker: Dr Stepan Shimanskii (JINR)

Slides 3-shimanskii.pdf

13:00 → 14:30 Lunch

14:30 → 17:00 DAQ and Efficient software developments

Convener: Dr Anatoly Kulikov (JINR)

14:30 COMPASS iFDAQ Software

The contribution presents development and recent status of the Data Acquisition Systems (DAQ) of the COMPASS experiment at CERN. In general, state-of-the-art Data Acquisition Systems (DAQ) in high energy physics experiments must satisfy high requirements in terms of reliability, efficiency and data rate capability. Over the years the ifDAQ was throughtfully tested and adjusted to improve all qualificators of DAQ. The resultant DAQ stability is discussed at the end and comparison with previous years is given.

Speaker: Josef Nový (CTU in Prague)

Slides 1-novy.pdf

15:00 COMPASS DAQ deployment application

Complex data acquisition systems require sophisticated software control systems which usually consist of several individual applications. To provide proper functionalities of such control system, it must be deployed successfully. However, this deployment process is complex and tricky to be performed manually. Therefore, an automatic deployment application was to be created. This talk is to present one solution used at COMPASS, its capabilities and options to be used on different data acquisition systems outside the COMPASS experiment.

Speaker: Jan Hrušovsky (CUNI, Faculty of Mathematics and Physics)

Slides 2-hrusovsky.pdf 2-hrusovsky.pptx

15:30 COMPASS API

High-energy physics experiments inherently generate large amounts of digital data, which are stored using various methods. Yet every computer system that uses them needs to be designed with specific formats and structures that are used for their storage. However, introducing a programming interface, which enables to access and manipulate these data would allow to decouple the data storage systems from other applications, such as data acquisition control programs or programs for data processing. COMPASS API provides such interface, which may be used over an Ethernet network and is usable by computer programs regardless of the programing language used to develop them.

Speaker: Matouš Jandek (Czech Technical University in Prague)

Slides 3-jandek.pdf

16:00 Coffee break

16:30 Software design of the COMPASS experiment at CERN

Speaker: Dr Sergei Gerassimov (Technische Universität München, Lebedev Physical Institute)

Slides 1-gerassimov.pdf

17:00 → 18:30 Discussion on setting up of SPD collaboration

slides 2-discussion.pptx

Friday 13 July

09:30 → 10:30 Advanced detector developments

Convener: Dr Nikolay Zamyatin (JINR)

09:30 Silicon Tracking Systems for BM@N and MPD experiments at NICA

A current status of activities towards large aperture silicon tracking systems for the BM@N stage 2 and MPD experiments at NICA is presented. In 2020 it is planned to upgrade existing tracking system of BM@N experiment based on GEM detectors by installing additional four stations of silicon detectors. These stations will be based on double-sided microstrip silicon sensors and fast readout electronics developed for CBM experiment at FAIR. Such system will provide a spatial resolution less than 25 μm and material budget per one station less than 1.5% X0 and will improve sufficiently tracking reconstruction efficiency of the BM@N tracking system. Inner tracker (IT) of MPD experiment will be based on ALPIDE chip, a CMOS Monolithic Active Pixel Sensor being developed for the Upgrade of the ITS of the ALICE experiment at CERN. Design of the IT is now under discussion and first results of the Monte Carlo simulations for different system configurations were made.

Speaker: Dmitrii Dementev (JINR LHEP)

Slides 1-dementev.pptx

10:00 The production of high quality PbWO4 crystals for PANDA electromagnetic calorimetr

Speaker: David Petrydes

Slides 2-petrydes.ppt

10:30 → 11:00 Coffee break

11:00 → 11:30 Closing remarks

Speaker: TBA

12:00 → 13:30 Lunch

14:00 → 17:00 Excursions to CUNI and CTU Laboratories