scholarly journals Design of the Cryogenic Bypass Line for the SIS100 Synchrotron

2020 ◽  
Vol 10 (22) ◽  
pp. 8311
Author(s):  
Artur Iluk ◽  
Kazimierz Malcher ◽  
Wiktor Słomski ◽  
Maciej Chorowski ◽  
Jarosław Poliński ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Electric Current ◽  
Liquid Helium ◽  
Science And Technology ◽  
Hadron Collider ◽  
Cryogenic System ◽  
Vacuum Vessel ◽  
Technical Requirements ◽  
Bypass Line ◽  
Under Construction

This paper presents the selected aspects of a superconducting cryogenic bypass line (BPL) design, a part of the international Facility for Antiproton and Ion Research (FAIR) SIS100 cryogenic system, currently under construction in Darmstadt, Germany. Design, manufacturing, and installation of the superconducting cryogenic bypass line is a part of a Polish in-kind contribution to the FAIR project, realized by the Wroclaw University of Science and Technology. The BPL is dedicated to transferring liquid helium and AC electric current between SIS100 arc sections and superconducting quadrupole magnets located in warm straight sections of the synchrotron. A main innovative feature of the cryogenic bypass line is transferring the electric current and liquid helium in one vacuum vessel, while in other similar projects, namely, the Large Hadron Collider at CERN (CH) or the Tevatron at FermiLab (USA), those functions are separated. The coexistence of superconducting busbars and liquid helium process pipes in one limited space, as well as numerous additional functional and technical requirements, was a source of the serious design and production challenges described in the paper, including two designs of the internal suspension system based on steel rods and aramid cables.

scholarly journals Heat generation by eddy currents in a shell of superconducting bus-bars for SIS100 particle accelerator at FAIR

2017 ◽  
Vol 66 (4) ◽  
pp. 705-715 ◽  
Author(s):  
Łukasz Tomków ◽  
Stanisław Trojanowski ◽  
Marian Ciszek ◽  
Maciej Chorowski
Keyword(s):  
Optimal Design ◽  
Electric Current ◽  
Liquid Helium ◽  
Heat Generation ◽  
Eddy Currents ◽  
Superconducting Magnets ◽  
Particle Accelerator ◽  
Cryogenic System ◽  
Steel Shell ◽  
University Of Technology

Abstract Superconducting magnets in the SIS100 particle accelerator require the supply of liquid helium and electric current. Both are transported with by-pass lines designed at Wrocław University of Technology. Bus-bars used to transfer an electric current between the sections of the accelerator will be encased in a steel shell. Eddy currents are expected to appear in the shell during fast-ramp operation of magnets. Heat generation, which should be limited in any cryogenic system, will appear in the shell. In this work the amount of heat generated is assessed depending on the geometry of an assembly of the bus-bars and the shell. Numerical and analytical calculations are described. It was found that heat generation in the shell is relatively small when compared to other sources present in the accelerator and its value strongly depends on the geometry of the shell. The distribution of eddy currents and generated heat for different geometrical options are presented. Based on the results of the calculations the optimal design is proposed.

scholarly journals Conceptual Design of the Cryogenic System for the High-luminosity Upgrade of the Large Hadron Collider (LHC)

2015 ◽  
Vol 67 ◽  
pp. 60-65 ◽  
Author(s):  
K. Brodzinski ◽  
S. Claudet ◽  
G. Ferlin ◽  
L. Tavian ◽  
U. Wagner ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Conceptual Design ◽  
Hadron Collider ◽  
Cryogenic System ◽  
High Luminosity

Summary and look to the future

1991 ◽  
Vol 336 (1642) ◽  
pp. 307-320 ◽  
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
The Future ◽  
Under Construction

A brief review is given of (i) the initial performance and impact of LEP, and (ii) possible improvements in LEP’s capabilities and research which may be carried out in the future. Following an overview of the experimental and theoretical shortcomings of the so-called Standard Model, the potential of future colliders that are under construction or consideration is summarized. Emphasis is placed on the potential of the Large Hadron Collider that may be built at CERN in the LEP tunnel, which would be a natural successor to LEP.

scholarly journals Exploring color-octet scalar parameter space in minimal R-symmetric models

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Linda M. Carpenter ◽  
Taylor Murphy ◽  
Matthew J. Smylie
Keyword(s):  
Large Hadron Collider ◽  
Parameter Space ◽  
Branching Fractions ◽  
Hadron Collider ◽  
Collider Phenomenology ◽  
Decay Channels ◽  
Color Octet ◽  
Supersymmetric Models ◽  
Three Body ◽  
Displaced Vertex

Abstract In this work we study the collider phenomenology of color-octet scalars (sgluons) in minimal supersymmetric models endowed with a global continuous R symmetry. We systematically catalog the significant decay channels of scalar and pseudoscalar sgluons and identify novel features that are natural in these models. These include decays in nonstandard diboson channels, such as to a gluon and a photon; three-body decays with considerable branching fractions; and long-lived particles with displaced vertex signatures. We also discuss the single and pair production of these particles and show that they can evade existing constraints from the Large Hadron Collider, to varying extents, in large regions of reasonable parameter space. We find, for instance, that a 725 GeV scalar and a 350 GeV or lighter pseudoscalar can still be accommodated in realistic scenarios.

scholarly journals Effect of crab cavity high order modes on the coupled-bunch stability of High-Luminosity Large Hadron Collider

2019 ◽  
Vol 22 (5) ◽  
Author(s):  
S. A. Antipov ◽  
N. Biancacci ◽  
J. Komppula ◽  
E. Métral ◽  
B. Salvant ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
High Order ◽  
High Luminosity

scholarly journals Automatic detection of transverse beam instabilities in the Large Hadron Collider

2019 ◽  
Vol 22 (11) ◽  
Author(s):  
T. E. Levens ◽  
K. Łasocha ◽  
T. Lefevre ◽  
M. Gąsior ◽  
R. Jones ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Automatic Detection ◽  
Transverse Beam ◽  
Beam Instabilities
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