Frozen spin solid targets developed at the laboratory of nuclear problems (JINR, Dubna)

Experience with polarized targets and achieving of very low temperatures ga ve rise to the idea of using a new technique based on dissolving He-3 in He -4 to create a frozen spin polarized target. The short history of the devel opment of such proton and deuteron targets at the Laboratory of Nuclear Pro blems (LNP) JINR is given. Recently, the Saclay-Argonne frozen spin proton polarized target used initially in E704 experiment at FERMILAB was upgraded with adding the missing parts and the first physics experiments was carrie d out. At present, a new project is being proposed. The aim of this project is the development of effective methods of production (LiD)-Li-6 irradiate d material for a large volume polarized deuteron target with a high polariz ation. The research will be carried out with use of the microtron of Czech Technical University for irradiation and the existing polarized target at C harles University Nuclear Centre for tests of the target materials.