RADIATION HEAD Russian patent published in 2007 - IPC G21K1/02 

FIELD: radiation engineering; devices for controlling particle flux or electromagnetic radiation using collimator for the purpose.

SUBSTANCE: proposed radiation head has radiation source holder installed in fixed housing made of absorbing material with biological-shield wicket gate joined with its cylindrical sliding surface and labyrinth collimating surface which form ball in closed position; wicket gate pivot is located in center of cylindrical surface of housing. In addition, set of filters separately mounted in stepped spline guides of housing is attached radially relative to common pivot, butt-ends of filters being congruent to housing collimating channel surface; holder is provided with blind pocket in butt-end opposite to source which has through slit to receive telescopic lock damper; the latter is mounted on rod whose spring-loaded flange is loosely mounted inside supporting grip; each filter is separately secured on double-arm positioning lever.

EFFECT: enlarged capabilities of dosing radiation power, enhanced radiation safety in head servicing and storage.

3 cl, 4 dwg