GARIS-II commissioning, 1

Kaji, Daiya*; Haba, Hiromitsu*; Kasamatsu, Yoshitaka*; Kudo, Yuki*; Morimoto, Koji*; Morita, Kosuke*; Ozeki, Kazutaka*; Sumita, Takayuki*; Yoneda, Akira*; Sato, Nozomi; Wakabayashi, Yasuo; Murakami, Masashi*  ; Tokanai, Fuyuki*; Namai, Saori*

RIKEN group has been developing a new gas-filled recoil ion separator GARIS-II for research of superheavy element produced by actinide-based asymmetric fusion (hot fusion) reactions. The GARIS-II consists of five magnets with a Q-D-Q-Q-D configuration. Where, D and Q are dipole and quadrupole magnets, respectively. The test of GARIS-II was performed with the Am standard -source and 0 scattered ions from the Pb target. A solid angle of GARIS-II was measured to be about 18.4 msr, which was almost as same as a calculated value with the TRANSPORT cord. The image size at focal plane versus He-gas pressure in GARIS-II chamber was also measured with Pb ions.