Hadron detection with a dual-readout fiber calorimeter

In this paper, we describe measurements of the response functions of a fiber-based dual- readout calorimeter for pions, protons and multiparticle "jets" with energies in the range from 10 to 180 GeV. The calorimeter uses lead as absorber material and has a total mass of 1350 kg. It is complemented by leakage counters made of scintillating plastic, with a total mass of 500 kg. The effects of these leakage counters on the calorimeter performance are studied as well. In a separate section, we investigate and compare different methods to measure the energy resolution of a calorimeter. Using only the signals provided by the calorimeter, we demonstrate that our dual-readout calorimeter, calibrated with electrons, is able to reconstruct the energy of proton and pion beam particles to within a few percent at all energies. The fractional widths of the signal distributions for these particles (sigma/E) scale with the beam energy as 30%/sqrt(E), without any additional contributing terms

Dual-Readout Calorimetry with Lead Tungstate Crystals

Results are presented of beam tests in which a small electromagnetic calorimeter consisting of lead tungstate crystals was exposed to 50 GeV electrons and pions. This calorimeter was backed up by the DREAM Dual-Readout calorimeter, which measures the scintillation and \v{C}erenkov light produced in the shower development, using two different media. The signals from the crystal calorimeter were analyzed in great detail in an attempt to determine the contributions from these two types of light to the signals, event by event. This information makes it possible to eliminate the dominating source of fluctuations and thus achieve an important improvement in hadronic calorimeter performance.Comment: Preprint submitted to Nucl. Instrum. Meth. on July 23, 200

Form of analyzing power and the determination of the basic parameters of hadron scattering amplitude

The determination of magnitudes of basic parameters of the high energy elastic scattering amplitude are examined at small momentum transfers with taking account of the Coulomb-hadron interference effects.Comment: 6 pages, LaTeX, 4 figures (files.ps), Talk at the International Workshop "Spin and Symmetry" (Prague, Chech., 13-19 July 2000

Impact of saturation on spin effects in proton-proton scattering

For pomerons described by a sum of two simple-pole terms, a soft and a hard pomeron, the unitarity bounds from saturation in impact-parameter space are examined. We consider the effect of these bounds on observables linked with polarisation, such as the analyzing power in elastic proton-proton scattering, for LHC energies. We obtain the s and t dependence of the Coulomb-nuclear interference at small momentum transfer, and show that the effect of the hard pomeron may be observed at the LHC.Comment: 8 pages, 2 figures, presented by O.V.S. at the Advanced Studies Institute "Symetries and Spin" (SPIN-Praha-2004), Prague, July 5 - July 10, 200

Personality of a Typical Convicted Person, Disordering the Activity of Institutions Providing Insulation from Society

In the article, based on the analysis of the materials of criminal cases initiated in 2010-2015, an attempt is made to identify certain criminal characteristics of the personality of a typical convicted person who commits crimes in the form of disorganization of the institution providing isolation from society during the period of serving a criminal sentence in the form of imprisonment in correctional colonies of general, strict and special regimes. It was found that the commission of such crimes is typical of male persons with secondary education. As a rule, penitentiary criminals disorganizing the activities of institutions that provide isolation from society are not on preventive and medical records. However, such a category of criminals more often has two or more criminal convictions, the experience of committing crimes related to violence or the threat of its use, as well as crimes against justice and state power. A characteristic feature of convicts committing such crimes is also the fact that the majority of such persons are violators of the established regime of serving punishment

The frequency properties of the quasiperiodic variations of midlatitude Es layer traces amplitude

In the present work we report about long-term measurement of echoes from Es-layer performed using Kazan ionosonde with 1 minute period of ionogram registration. Deep quasiperiodic variations resembling interference beats at certain frequency range in amplitude of echoes from Es-layer were observed. A new form of data presentation is introduced, which allows not only to display clearly the critical frequencies of ionospheric layers, but also to demonstrate the fine structure of ionospheric layers. Interference beatings appear at 4 MHz in the afternoon and at 2 MHz at night, and have extent in the frequency range of ∼0.5-2.5 MHz. With increasing sounding frequency, the distance between minima increase from 40 to 700 kHz. Es-layer occurrence probabilities depending on structural features of the reflection are determined. © 2011 IEEE

Diffractive effects in spin-flip pp amplitudes and predictions for relativistic energies

We analyze the diffractive (Pomeron) contribution to pp spin-flip amplitude and discuss the possible scenarios for energies available at the Relativistic Heavy-Ion Collider (RHIC). In particular, we show that RHIC data will be instrumental in assessing the real contribution of diffraction to spin amplitudes.Comment: 11 pages, 12 Encapsulated PostScript files, LaTeX2e use

Some ionospheric responses to earthquakes

© 2014 IEEE. Since 2010 long term observations by ionosonde in Kazan with 1-min intervals is made. Such operating mode allows rare effects occurring in ionosphere and caused by earthquakes and big explosions would be record in ionogram. In paper the characteristic features (signature) of severe events are detected in ionograms when the epicenter was at a great distance. The revealed signatures are a F1 layering, appearance of a trace focusing and a particular TID in ionograms. The duration of these events is defined and calculations of speed of wave disturbances is made

Dual-readout Calorimetry

The RD52 Project at CERN is a pure instrumentation experiment whose goal is to understand the fundamental limitations to hadronic energy resolution, and other aspects of energy measurement, in high energy calorimeters. We have found that dual-readout calorimetry provides heretofore unprecedented information event-by-event for energy resolution, linearity of response, ease and robustness of calibration, fidelity of data, and particle identification, including energy lost to binding energy in nuclear break-up. We believe that hadronic energy resolutions of {\sigma}/E $\approx$ 1 - 2% are within reach for dual-readout calorimeters, enabling for the first time comparable measurement preci- sions on electrons, photons, muons, and quarks (jets). We briefly describe our current progress and near-term future plans. Complete information on all aspects of our work is available at the RD52 website http://highenergy.phys.ttu.edu/dream/.Comment: 10 pages, 10 figures, Snowmass White pape