Author/Authors :
Moriguchi، نويسنده , , T. and Ishimoto، نويسنده , , S. and Igarashi، نويسنده , , S. and Ozawa، نويسنده , , A. and Abe، نويسنده , , Y. and Ishibashi، نويسنده , , Y. and Ito، نويسنده , , Y. and Ooishi، نويسنده , , H. and Suzuki، نويسنده , , H. and Takechi، نويسنده , , M. and Tanaka، نويسنده , , K.، نويسنده ,
Abstract :
A thick and large solid hydrogen target (SHT) for radioisotope (RI) beams was developed. A target with 100 mm thickness and 50 mm diameter equipped with thin Kapton windows (25 μm) was achieved. We developed a new method to fill solid hydrogen into a large target cell by eliminating any void or porous regions. The expansion of thin Kapton windows and the real thickness of SHT were measured by a laser distance meter and an energy-loss of RI beams, respectively. They gave the same thickness confirming the complete solidification of hydrogen in the cell. We obtained a window expansion of about 2.5 mm (about 1.25 mm for each side).
