N. Minafra
A5020566861- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- CCD and CMOS Imaging Sensors
- Radiation Therapy and Dosimetry
- Diamond and Carbon-based Materials Research
- Superconducting Materials and Applications
- Radiation Effects in Electronics
- Parallel Computing and Optimization Techniques
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Magnetic confinement fusion research
- Distributed and Parallel Computing Systems
- Gamma-ray bursts and supernovae
- Historical Astronomy and Related Studies
University of Kansas
2017-2025
Institute of High Energy Physics
2019-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
Kansas State University
2023
University of Virginia
2021
European Organization for Nuclear Research
2012-2017
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2013-2017
University of Bari Aldo Moro
2014
At the LHC energy of , under various beam and background conditions, luminosities, Roman Pot positions, TOTEM has measured differential cross-section for proton-proton elastic scattering as a function four-momentum transfer squared t. The results different analyses are in excellent agreement demonstrating no sizeable dependence on conditions. Due to very close approach detectors center (≈5σbeam) dedicated run with β* = 90 m, |t|-values down 5·10−3 GeV2 were reached. exponential slope this...
The TOTEM collaboration has measured the proton-proton total cross section at √s=8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, Roman pots have been inserted very close to allowing detection of ~90% nuclear elastic scattering events. Simultaneously inelastic rate by T1 and T2 telescopes. By applying optical theorem, (101.7±2.9) mb determined, well in agreement extrapolation from lower energies. This method also allows one derive sections:...
The TOTEM experiment at the LHC has performed first luminosity-independent determination of total proton-proton cross-section . This technique is based on optical theorem and requires simultaneous measurements inelastic rate – accomplished with forward charged-particle telescopes T1 T2 in range 3.1 < |η| 6.5 elastic by detecting outcoming protons Roman Pot detectors. data presented here were collected a dedicated run 2011 special beam optics (β* = 90 m) Pots approaching close enough to...
The TOTEM experiment has made a precise measurement of the elastic proton-proton differential cross-section at centre-of-mass energy sqrt(s) = 8 TeV based on high-statistics data sample obtained with beta* 90 optics. Both statistical and systematic uncertainties remain below 1%, except for t-independent contribution from overall normalisation. This unprecedented precision allows to exclude purely exponential in range four-momentum transfer squared 0.027 < |t| 0.2 GeV^2 significance greater...
In this paper we report on the timing resolution of first production 50 micro-meter thick Ultra-Fast Silicon Detectors (UFSD) as obtained in a beam test with pions 180 GeV/c momentum. UFSD are based Low-Gain Avalanche (LGAD) design, employing n-on-p silicon sensors internal charge multiplication due to presence thin, low-resistivity diffusion layer below junction. The used belongs thin (50 μm) sensors, an pad area 1.4 mm2. gain was measured vary between 5 and 70 depending bias voltage....
The TOTEM collaboration has measured the proton–proton total cross section at $$\sqrt{s}=13~\hbox {TeV}$$ with a luminosity-independent method. Using dedicated $$\beta ^{*}=90~\hbox {m}$$ beam optics, Roman Pots were inserted very close to beam. inelastic scattering rate been by T1 and T2 telescopes during same LHC fill. After applying optical theorem is $$\sigma _\mathrm{tot}=(110.6~\pm ~3.4$$ ) mb, well in agreement extrapolation from lower energies. This method also allows one derive...
Abstract The TOTEM experiment at the LHC has performed first measurement $$\sqrt{s} = 13\,\mathrm{TeV}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mspace /><mml:mi>TeV</mml:mi></mml:mrow></mml:math> of $$\rho $$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ρ</mml:mi></mml:math> parameter, real to imaginary ratio nuclear elastic scattering amplitude $$t=0$$...
The TOTEM collaboration has measured the elastic proton-proton differential cross section ${\rm d}\sigma/{\rm d}t$ at $\sqrt{s}=13$ TeV LHC energy using dedicated $\beta^{*}=90$ m beam optics. Roman Pot detectors were inserted to 10$\sigma$ distance from beam, which allowed measurement of range $[0.04$ GeV$^{2}$$; 4 $GeV$^{2}$$]$ in four-momentum transfer squared $|t|$. efficient data acquisition collect about 10$^{9}$ events precisely measure cross-section including diffractive minimum...
The TOTEM collaboration has measured the proton-proton total cross section at $\sqrt{s}=13$ TeV with a luminosity-independent method. Using dedicated $β^{*}=90$ m beam optics, Roman Pots were inserted very close to beam. inelastic scattering rate been by T1 and T2 telescopes during same LHC fill. After applying optical theorem is $σ_{\rm tot}=(110.6 \pm 3.4$) mb, well in agreement extrapolation from lower energies. This method also allows one derive elastic sections: el} = (31.0 1.7)$ mb...
The TOTEM experiment at the LHC has measured inelastic proton-proton cross-section in a β* = 90 m run with low pile-up. measurement was based on events least one charged particle T2 telescope acceptance of 5.3 < |η| 6.5 pseudorapidity. Combined data from T1 telescope, covering 3.1 4.7, for ⩽ final-state determined to be (70.5 ± 2.9) mb. This includes all central diffractive which maximally 0.25 mb is estimated escape detection telescopes. Based models mass diffraction, total deduced (73.7...
The TOTEM experiment at the CERN LHC has measured elastic proton-proton scattering centre-of-mass energy $\sqrt{s}$ = 8 TeV and four-momentum transfers squared, |t|, from 6 x $10^{-4}$ GeV$^2$ to 0.2 GeV$^2$. Near lower end of |t|-interval differential cross-section is sensitive interference between hadronic electromagnetic amplitudes. This article presents measurement constraints it imposes on functional forms modulus phase amplitude. data exclude traditional Simplified West Yennie formula...
Abstract The proton–proton elastic differential cross section $${\mathrm{d}}\sigma /{\mathrm{d}}t$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>d</mml:mi><mml:mi>σ</mml:mi><mml:mo>/</mml:mo><mml:mi>d</mml:mi><mml:mi>t</mml:mi></mml:mrow></mml:math> has been measured by the TOTEM experiment at $$\sqrt{s}=2.76\hbox { TeV}$$...
The TOTEM experiment at the LHC has performed first measurement $\sqrt{s} = 13$ TeV of $ρ$ parameter, real to imaginary ratio nuclear elastic scattering amplitude $t=0$, obtaining following results: $ρ= 0.09 \pm 0.01$ and 0.10 0.01$, depending on different physics assumptions mathematical modelling. unprecedented precision measurement, combined with total cross-section measurements in an energy range larger than 10 (from 2.76 13 TeV), implied exclusion all models classified published by...
The TOTEM experiment has measured the charged-particle pseudorapidity density dNch/dη in pp collisions at for 5.3<|η|<6.4 events with least one charged particle transverse momentum above 40 MeV/c this range. This extends analogous measurement performed by other LHC experiments to previously unexplored forward η region. refers more than 99% of non-diffractive processes and single double diffractive masses ∼3.4 GeV/c2, corresponding about 95% total inelastic cross-section. been found decrease...
The first double diffractive cross-section measurement in the very forward region has been carried out by TOTEM experiment at LHC with center-of-mass energy of sqrt(s)=7 TeV. By utilizing tracking detectors T1 and T2, which extend up to |eta|=6.5, a clean sample pp events was extracted. From these events, we measured sigma_DD =(116 +- 25) mub for where both systems have 4.7 <|eta|_min < 6.5 .
The SAMpler for PICosecond time (SAMPIC) chip has been designed by a collaboration including CEA/IRFU/SEDI, Saclay and CNRS/LAL/SERDI, Orsay. It benefits from both the quick response of to digital converter versatility waveform digitizer perform accurate timing measurements. Thanks sampled signals, smart algorithms making best use pulse shape can be used improve resolution. A software framework developed analyse SAMPIC output data extract information using either constant fraction...
Timing detectors are a well established part of High Energy Physics experimental instrumentation. The choice sensors with fast (less than 10 ns) and precise (better 100 ps) signals is an essential the design timing detector, together radiation resistance considerations. Single crystal diamond one most promising technologies in this field. In paper, main characteristics that make single ideal for applications will be described introduction to front-end electronics given. Finally, two examples...
This paper describes the design and performance of timing detector developed by TOTEM Collaboration for Roman Pots (RPs) to measure Time-Of-Flight (TOF) protons produced in central diffractive interactions at LHC . The measurement TOF allows determination longitudinal position proton interaction vertex its association with one vertices reconstructed CMS detectors. is based on single crystal Chemical Vapor Deposition (scCVD) diamond plates designed about 50 ps time precision. upgrade...
The pseudorapidity density of charged particles dN $$_{ ch }$$ /d $$\eta $$ is measured by the TOTEM experiment in proton–proton collisions at $$\sqrt{s} = 8$$ TeV within range $$3.9<\eta <4.7$$ and $$-6.95<\eta <-6.9$$ . Data were collected a low intensity LHC run with occurring distance 11.25 m from nominal interaction point. data sample expected to include 96–97 % inelastic interactions. measurement reported here considers $$p_T>0$$ MeV/c, produced interactions least one particle...
The TOTEM Experiment is designed to measure the total proton-proton cross-section with luminosity-independent method and study elastic diffractive pp scattering at LHC. To achieve optimum forward coverage for charged particles emitted by collisions in interaction point IP5, two tracking telescopes, T1 T2, are installed on each side of IP pseudorapidity region 3.1 < = |eta | 6.5, special movable beam-pipe insertions - called Roman Pots (RP) placed distances +- 147 m 220 from IP5. This article...
Precise knowledge of the beam optics at LHC is crucial to fulfil physics goals TOTEM experiment, where kinematics scattered protons reconstructed with near-beam telescopes -- so-called Roman Pots (RP). Before being detected, protons' trajectories are influenced by magnetic fields accelerator lattice. Thus precise understanding proton transport key importance for experiment. A novel method evaluation proposed which exploits kinematical distributions elastically observed in RPs. Theoretical...
Abstract The TOTEM collaboration at the CERN LHC has measured differential cross-section of elastic proton–proton scattering $$\sqrt{s} = 8\,\mathrm{TeV}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>8</mml:mn> <mml:mspace /> <mml:mi>TeV</mml:mi> </mml:mrow> </mml:math> in squared four-momentum transfer range $$0.2\,\mathrm{GeV^{2}}< |t| < 1.9\,\mathrm{GeV^{2}}$$ <mml:mn>0.2</mml:mn>...