Infrastructure for Detector Research and Development towards the International Linear Collider

The EUDET-project was launched to create an infrastructure for developing and testing new and advanced detector technologies to be used at a future linear collider. The aim was to make possible experimentation and analysis of data for institutes, which otherwise could not be realized due to lack of resources. The infrastructure comprised an analysis and software network, and instrumentation infrastructures for tracking detectors as well as for calorimetry.Comment: 54 pages, 48 picture

Diffraction radiation from ultrarelativistic particles passing through a slit. Determination of the electron beam divergence

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K-Shell Ionization Cross Section of Ti and Cu Atoms by 1 and 2 GeV Electrons

The K-shell ionization cross sections of titanium and copper atoms were determined by analyzing the spectra of characteristic X-ray radiation generated by an electron beam with energies of 1 and 2 GeV in metal foils. New data obtained for these energies demonstrate the influence of the density effect on the ionization cross sections values. The results were compared with previous experimental data and calculations based on pure theoretical and semi-empirical models

Formation Region eEfects in X-ray Transition Radiation from 1 to 6 GeV Electrons in Multilayer Targets

The formation region effects in x-ray transition radiation have been experimentally investigated. The radiationwas generated using 1–6 GeV electrons impinging on two multilayer targets with considerably different periods.The absolute yield of transition radiation was measured and the wide spectral peak in the range from 10 to30 keV was observed. In the most part of the electron energy range the emission from the short-period radiatorwas expectedly suppressed, compared to the case of the long-period one. But for the electron energy of 1 GeVan opposite effect, though rather small, of the emission enhancement in the short-period radiator was observed.The conditions, under which this effect is much stronger, are derived and its possible practical value is outlined.The theory accounting for an arbitrary transversal shape of the electron beam and the finite size of the detectoris developed. This theory describes rather well the experimental results