  Planar channeling of 855 MeV electrons and positrons in straight and bent
tungsten (110) crystal is simulated by means of the \MBNExplorer software
package. The results of simulations for a broad range of bending radii are
analyzed in terms of the channel acceptance, dechanneling length, and spectral
distribution of the emitted radiation. Comparison of the results with
predictions of other theories as well as with the data for (110) oriented
diamond, silicon and germanium crystals is carried out.
