Selected Papers from “4th Elba Workshop on Forward Physics @ LHC Energy”

A special issue of Instruments (ISSN 2410-390X).

Deadline for manuscript submissions: closed (31 August 2018) | Viewed by 8298

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CERN
Interests: elementary particle physics

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Helsinki Institute of Physics (HIP), Helsinki, Finland
Interests: particle physics; data analysis & instrumentation; particle accelerator

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CERN
Interests: detectors

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University of Kansas, Lawrence, KS 66045, USA
Interests: theory

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CERN
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Laboratory of Instrumentation and Experimental Particles Physics (LIP), Portugal
Interests: instrumentation and experimental particle physics

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Istituto Nazionale di Fisica Nucleare (INFN-Pisa), Pisa, Italy
Interests: experiments; physics

Special Issue Information

Dear Colleagues,

Current theoretical frameworks and perspectives for beyond Standard Model physics at 13 TeV energy are analyzed from the viewpoint of forward physics. The potential and sensitivity of the main current forward experiments at the LHC are on focus, as well as the required detector developments and accelerator operations.

In particular, the aim of this Special Issue is to collect timely contributions outlining recent advances on the forward detectors and physics results at the CERN LHC. Topics of interests include, but are not limited to, the following aspects:

  • Theory
  • Forward Physics Results
  • Experiments
  • Detectors Technology
  • Accelerators

Dr. Simone Giani
Dr. Kenneth Osterberg
Dr. Joachim Baechler
Dr. Joachim Baechler
Dr. Helmut Burkhardt
Dr. Joao Varela
Dr. Angelo Scribano
Guest Editors

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Keywords

  • forward physics
  • pp total cross section
  • pp elastic differential cross section
  • diffraction
  • odderon
  • gluons

Published Papers (3 papers)

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9 pages, 2914 KiB  
Article
The Timing System of the TOTEM Experiment
by Edoardo Bossini
Instruments 2018, 2(4), 21; https://doi.org/10.3390/instruments2040021 - 24 Oct 2018
Cited by 3 | Viewed by 2743
Abstract
The new proton timing stations of the Totem experiment are based on UltraFast Silicon Detectors installed in Roman Pots at 220 m from the interaction point 5 at LHC. The sensors have shown in beam test a timing resolution in the range 30–100 [...] Read more.
The new proton timing stations of the Totem experiment are based on UltraFast Silicon Detectors installed in Roman Pots at 220 m from the interaction point 5 at LHC. The sensors have shown in beam test a timing resolution in the range 30–100 ps, depending on the pixel size. The readout is performed through a fast sampler chip: the SAMPIC. The best timing resolution can indeed be obtained only by recording the full waveform of the detector signal. The challenges to integrate the chip and the detector in the Totem-CMS DAQ and control systems will be discussed, together with the solutions adopted. The system has been successfully operated in LHC during some commissioning runs and during the special run in July 2018. Full article
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7 pages, 618 KiB  
Article
Beam-Background Tests with TOTEM Roman Pot Detectors at the LHC Injection Energy
by Jan Kašpar
Instruments 2018, 2(4), 20; https://doi.org/10.3390/instruments2040020 - 09 Oct 2018
Cited by 1 | Viewed by 2450
Abstract
With the aim of measuring the total cross-section and the ρ parameter, TOTEM has performed tests of beam conditions at the LHC injection energy of s = 900   GeV . The tests have revealed complications in setting up the LHC collimators to [...] Read more.
With the aim of measuring the total cross-section and the ρ parameter, TOTEM has performed tests of beam conditions at the LHC injection energy of s = 900   GeV . The tests have revealed complications in setting up the LHC collimators to minimise the background observed in the Roman Pot (RP) detectors, summarised in this article. In two tests a subset of the RPs was exposed to background compatible with the physics requirements. If no improvement of the collimation strategy is found, it is shown that a small retraction of the RPs can significantly reduce the observed background level. Full article
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9 pages, 1041 KiB  
Project Report
High-Beta Optics and Running Prospects
by Helmut Burkhardt
Instruments 2019, 3(1), 22; https://doi.org/10.3390/instruments3010022 - 18 Mar 2019
Cited by 2 | Viewed by 2688
Abstract
Dedicated high-beta optics are used to make forward proton scattering measurements possible at the LHC. Following a short general introduction and history of special high-beta optics and running conditions, we describe the two types of special high-beta runs planned for 2018. A run [...] Read more.
Dedicated high-beta optics are used to make forward proton scattering measurements possible at the LHC. Following a short general introduction and history of special high-beta optics and running conditions, we describe the two types of special high-beta runs planned for 2018. A run at top energy at β y * = 90 m for elastic and diffractive scattering, and a low energy run to measure the rho-parameter in the Coulomb interference region. Full article
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