[en] The design and performance of Transition Radiation Trackers (TRTs) based on Kapton straw drift tubes is described. A test beam prototype of the ATLAS TRT is discussed, together with extensive Monte Carlo (MC) simulations for the full-size detector performance in real LHC conditions. These simulations have shown that the ATLAS TRT will provide powerful pattern recognition and excellent electron identification, even at the highest LHC luminosities. In the case of the HERA-B TRT, the MC simulations demonstrate a good electron identification capability even at the pre-trigger level. The application of the TRT for B-physics experiments is most important, since the electron tracking and identification capabilities reduce the background from hadrons, photon conversions and fake tracks by a factor of 10-100 beyond that from the e.m. calorimeter and tracker alone. (orig.)

[en] The Particle Identification (PID) methods using Transition Radiation (TR) and Relativistic Rise (RR) of the ionization losses are discussed as a complementary methods to a RICH technique. The comparative possibilities and limitations of these PID are considered. For the TR the modern high granularity detectors are described (ATLAS Transition Radiation Straw Tracker - TRT - as an example). The comparison is given between widely used Truncated Mean (TM technique) and a new approach based on Time over Threshold (ToT) measurements, which is more preferable due to the simplification of readout electronics and possibility of the fast triggering

[en] The modern status of particle identification by transition radiation in high energy particle accelerator experiments is reviewed. The possibilities and limitations of TR-detectors are discussed. (orig.)

No abstract available

[en] The use of transition radiation (TR) as a means of identifying high energy particles has now become a subject of intensive experimental investigations and applications. Our intention is first to study the physics of these phenomena and to describe ways of building detectors which can efficiently identify particles. (orig.)

[en] The electron drift velocities in xenon with admixtures of CO₂ and CF₄ were measured with the aid of a cylindrical proportional chamber. The spectroscopy characteristics and ageing problems of such chambers are discussed. (orig.)

[en] The operation of gas proportional chambers in the transition radiation detectors (TRD) in the experiments in the future high-luminosity colliders will be limited due to an extremely high particle intensity. Therefore, the development of TRD on the basis of thin inorganic high Z scintillator films is interesting. The results of beam studies of TRD based on thin CsI (Na) film are discussed

[en] A wide variety of foam radiators, potentially useful in the design of a transition radiation detector, the possible particle identification tool in collider experiments, have been tested in the beam. Various characteristics of these radiators are compared, and the conclusion is reached that certain brands of polyethylene foam are best suited for use in the detector. Comparison is made with a 'traditional' radiator, which is a periodic structure of plastic foils. (orig.)

No abstract available

No abstract available