[en] Sources of radioactive contamination of nuclear power plant compartments and reasons of radioactive isotopes appearance in coolant are concidered. It has been established that as for the nuclear power plants with WWR type reactors, main source of radioactive contamination is presented by radionuclides contained in corrosion products of structural materials. Characteristics of the basic structural materials are given for thouse used in WWR blocks and list of typical radionuclides in corrosion products is presented. Demands are stated for protective anticorrosive materials and also metodology for selection of particular decontamination method is given. Classification of decontamination problems at nuclear pover plant is given and methods of the primary coolant circuit decontamination and also decontamination of removable equipment and inner surfaces of equipment and compartments are stated. Decontamination processes by oxidation-reduction method, by steam emulsion method, by compact jets of desorptive solution, by means of easely removable polymer coatings, by the foam method of decontamination, decontamination by dry sorbents and electrochemical method of decontamination are stated. (I.T.)

No abstract available

[en] We discuss high-p_T production processes at forward rapidities in hadron-hadron collisions, and describe recent results from using QCD high-energy factorization in forward jet production at the LHC.

[en] A new facility has been constructed to measure the characteristic features of superconducting model magnets and cable at cryogenic temperatures--a function which supports the design and development process for building full-scale accelerator magnets. There are multiple systems operating in concert to test the model magnets, namely, cryogenic, magnet power, data acquisition and system control. A typical model magnet test includes the following items: warm measurements of magnet coils, strain gauges and voltage taps; hipot testing of insulation integrity; cooling with liquid nitrogen and then liquid helium; measuring quench current and magnetic field; (5) magnet warm-up. While the magnet is being cooled to 4.22 K, the mechanical stress is monitored through strain gauges. Current is then ramped into the magnet until it reaches some maximum value and the magnet transitions from the superconducting state to the normal state. Normal-zone propagation is monitored using voltage taps on the magnet coils during this process, thus indicating where the transition began. The current ramp is usually repeated until a plateau current is reached, where the magnet has mechanically settled. Many variations on the current ramping sequence are used to study different phenomena associated with magnet performance, e.g. magnetization hysteresis, eddy current losses, cryogenic stability, etc. A warm bore cryostat with a rotating coil is inserted in the magnet to measure field strength and homogeneity. These types of measurements yield multipole and current versus field data

[en] At the Large Hadron Collider (LHC) it will become possible for the first time to investigate experimentally the forward region in hadron-hadron collisions via high-p_T processes. In the LHC forward kinematics QCD logarithmic corrections in the hard transverse momentum and in the large rapidity interval may both be quantitatively significant. We analyze the hadroproduction of forward jets in the framework of QCD high-energy factorization, which allows one to resum consistently both kinds of corrections to higher orders in QCD perturbation theory. We compute the short-distance matrix elements needed to evaluate the factorization formula at fully exclusive level. We discuss numerically dynamical features of multi-gluon emission at large angle encoded in the factorizing high-energy amplitudes. (orig.)

[en] We calculate and analyze Z and W^± production in association with quark-antiquark pair in k_T-factorization. Numerical calculations are performed using the Monte Carlo generator CASCADE for proton proton collisions at LHC energy. We compare total and differential cross sections calculated in k_T-factorization approach with total differential cross sections obtained in LO and NLO calculations in collinear factorization approach. We provide strong evidence that some of the effects of the NLO and even higher order collinear calculation are already included in the LO k_T-factorization calculation. (orig.)

[en] A new facility has been constructed to measure the characteristic features of superconducting model magnets and cable at cryogenic temperatures - a function which supports the design and development process for building full-scale accelerator magnets. There are multiple systems operating in concert to test the model magnets, namely: cryogenic, magnet power, data acquisition and system control

[en] The 50-mm superconducting dipole magnet approximately 1.3 m in length was fabricated at LBL to provide a background field up to 7 T in the Cable Test Facility at SSCL. The dipole has a stainless steel beam tube with a 47.88-mm OD and a wall thickness of 2.095 mm which significantly reduced the usefulness of this magnet. There were many unsuccessful attempts to remove this tube at 300 K and 80 K. The authors have devised a method of an ordinary multi-cutting process inside the magnet without its disassembly. In this article, tooling construction details with regulating cutting depths will be discussed

[en] CASCADE is a full hadron level Monte Carlo event generator for ep, γp and p anti p and pp processes, which uses the CCFM evolution equation for the initial state cascade in a backward evolution approach supplemented with off - shell matrix elements for the hard scattering. A detailed program description is given, with emphasis on parameters the user wants to change and common block variables which completely specify the generated events. (orig.)

[en] At the Large Hadron Collider (LHC) it will become possible for the first time to investigate experimentally the forward region in hadron-hadron collisions via high-p_T processes. In the LHC forward kinematics QCD logarithmic corrections in the hard transverse momentum and in the large rapidity interval may both be quantitatively significant. We analyze the hadroproduction of forward jets in the framework of QCD high-energy factorization, which allows one to resum consistently both kinds of corrections to higher orders in QCD perturbation theory. We compute the short-distance matrix elements needed to evaluate the factorization formula at fully exclusive level. We discuss numerically dynamical features of multi-gluon emission at large angle encoded in the factorizing high-energy amplitudes.