scholarly journals An experiment for electron-hadron scattering at the LHC

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
K. D. J. André ◽  
L. Aperio Bella ◽  
N. Armesto ◽  
S. A. Bogacz ◽  
D. Britzger ◽  
...  
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Quantum Field ◽  
Heavy Ion Physics ◽  
Scattering Experiment ◽  
Lhc Physics ◽  
Physics Experiment ◽  
Energy Frontier ◽  
Accelerator Design ◽  
Physics Programme

AbstractNovel considerations are presented on the physics, apparatus and accelerator designs for a future, luminous, energy frontier electron-hadron (eh) scattering experiment at the LHC in the thirties for which key physics topics and their relation to the hadron-hadron HL-LHC physics programme are discussed. Demands are derived set by these physics topics on the design of the LHeC detector, a corresponding update of which is described. Optimisations on the accelerator design, especially the interaction region (IR), are presented. Initial accelerator considerations indicate that a common IR is possible to be built which alternately could serve eh and hh collisions while other experiments would stay on hh in either condition. A forward-backward symmetrised option of the LHeC detector is sketched which would permit extending the LHeC physics programme to also include aspects of hadron-hadron physics. The vision of a joint eh and hh physics experiment is shown to open new prospects for solving fundamental problems of high energy heavy-ion physics including the partonic structure of nuclei and the emergence of hydrodynamics in quantum field theory while the genuine TeV scale DIS physics is of unprecedented rank.

Single Crystal CVD Diamond Detectors: Position and Temporal Response Measurements using a Synchrotron Microbeam Probe

2007 ◽  
Vol 1039 ◽  
Author(s):  
John Morse ◽  
Murielle Salomé ◽  
Eleni Berdermann ◽  
Michal Pomorski ◽  
James Grant ◽  
...  
Keyword(s):  
Single Crystal ◽  
Plate Thickness ◽  
Radiation Detectors ◽  
Heavy Ion ◽  
High Energy ◽  
Charge Collection ◽  
Heavy Ion Physics ◽  
X Ray ◽  
Single Crystal Diamond ◽  
Wide Range

AbstractUltrapure, homoeptaxially grown CVD single crystal diamond is a material with great potential for the fabrication of ionizing radiation detectors for high energy, heavy ion physics, and realtime dosimetry for radiotherapy. Only diamond has suitable transmission properties and can offer the required radiation hardness for synchrotron X-ray beam monitoring applications. We report on experiments made using a synchrotron X-ray microbeam probe to investigate the performance of single crystal diamonds operated as position sensitive, solid state ‘ionization chambers’. We show that for a wide range of electric fields >0.3Vµm−1, suitably prepared devices give excellent spatial response uniformity and time stability. With an applied field of 2Vµm−1 complete charge collection times are ∼1nsec for a diamond plate thickness of 100µm. Position sensitivity was obtained for an X-ray beam incident on the isolation gap between adjacent electrodes of a quadrant device: here, a crossover response region that results from charge carrier diffusion extends over ∼20µm. Using GHz bandwidth signal processing electronics, the signal charge collection process was measured with spatial and temporal resolutions of 1µm and <50ps.

scholarly journals Equilibrium statistical–thermal models in high-energy physics

2014 ◽  
Vol 29 (17) ◽  
pp. 1430021 ◽  
Author(s):  
Abdel Nasser Tawfik
Keyword(s):  
Lattice Qcd ◽  
Particle Production ◽  
Chemical Potential ◽  
Heavy Ion ◽  
High Energy ◽  
Linear Sigma Model ◽  
Particle Model ◽  
Heavy Ion Physics ◽  
Thermal Models ◽  
Freeze Out

We review some recent highlights from the applications of statistical–thermal models to different experimental measurements and lattice QCD thermodynamics that have been made during the last decade. We start with a short review of the historical milestones on the path of constructing statistical–thermal models for heavy-ion physics. We discovered that Heinz Koppe formulated in 1948, an almost complete recipe for the statistical–thermal models. In 1950, Enrico Fermi generalized this statistical approach, in which he started with a general cross-section formula and inserted into it, the simplifying assumptions about the matrix element of the interaction process that likely reflects many features of the high-energy reactions dominated by density in the phase space of final states. In 1964, Hagedorn systematically analyzed the high-energy phenomena using all tools of statistical physics and introduced the concept of limiting temperature based on the statistical bootstrap model. It turns to be quite often that many-particle systems can be studied with the help of statistical–thermal methods. The analysis of yield multiplicities in high-energy collisions gives an overwhelming evidence for the chemical equilibrium in the final state. The strange particles might be an exception, as they are suppressed at lower beam energies. However, their relative yields fulfill statistical equilibrium, as well. We review the equilibrium statistical–thermal models for particle production, fluctuations and collective flow in heavy-ion experiments. We also review their reproduction of the lattice QCD thermodynamics at vanishing and finite chemical potential. During the last decade, five conditions have been suggested to describe the universal behavior of the chemical freeze-out parameters. The higher order moments of multiplicity have been discussed. They offer deep insights about particle production and to critical fluctuations. Therefore, we use them to describe the freeze-out parameters and suggest the location of the QCD critical endpoint. Various extensions have been proposed in order to take into consideration the possible deviations of the ideal hadron gas. We highlight various types of interactions, dissipative properties and location-dependences (spatial rapidity). Furthermore, we review three models combining hadronic with partonic phases; quasi-particle model, linear sigma model with Polyakov potentials and compressible bag model.

Heavy ion physics programme in CMS

2003 ◽  
Vol 32 (S2) ◽  
pp. s69-s202 ◽  
Author(s):  
G. Baur ◽  
M. Bedjidian ◽  
B. E.Bonner ◽  
S. Chatrchyan ◽  
J. Damgov ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Heavy Ion Physics ◽  
Physics Programme

scholarly journals Future high energy heavy ion physics at Brookhaven

1989 ◽  
Vol 498 ◽  
pp. 323-332 ◽  
Author(s):  
N.P. Samios ◽  
T.W. Ludlam
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Physics

High-energy heavy-ion physics

1985 ◽  
Vol 21 (1-4) ◽  
pp. 219-249 ◽  
Author(s):  
S. Nagamiya
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Physics

R&D of gas filled detectors for high energy physics experiments

2021 ◽  
Author(s):  
Saikat Biswas
Keyword(s):  
High Energy Physics ◽  
Heavy Ion ◽  
High Energy ◽  
Stability Study ◽  
Research Centre ◽  
Electron Multiplier ◽  
Heavy Ion Physics ◽  
Straw Tube ◽  
Physics Experiments ◽  
Energy Physics

Bose Institute is Asia’s first modern research centre devoted to interdisciplinary research and bears a century old tradition of research excellence. In the experimental high-energy physics (EHEP) detector laboratory of Bose Institute, Kolkata, we are working on the R&D of Gas Electron Multiplier (GEM), straw tube detector for future heavy ion physics experiments and also developing low resistive bakelite Resistive Plate Chamber (RPC), keeping in mind high particle rate handling capacity. The main goal of our research program is the stability study and ageing study of gaseous detectors mentioned above. In this review article, the details of the R&D program of GEM detector, straw tube and RPC detectors carried out during the last five years is reported.

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