JAEA-Conf 2011-002 - 日本原子力研究開発機構

JAEA-Conf 2011-002
The new detector system enables nuclear data measurement in a 600-MeV range. It utilizes both the Pulse
Height and TOF in proton measurements. The detector concept is illustrated briefly in the Fig.1, it consists
from two sections; one is a crystal detector based on the ordinal E-E method, and the other the TOF section
following the crystal. The detector proposed presently is expected to offer the best characteristics in fulfilling
the required specifications, such as energy resolution and the energy acceptance.
Fig.2. Our experimental setup.
We used the setup [Fig.2.] for the BGO light output measurement for Proton and Alpha particles. In this case
the beam energy is changed using a degrader. The light output response of a BGO crystal was measured using
Proton and 4 He ions of energy ranges from 25 MeV up to 100 MeV. Experiments were made at the cyclotron
facility National Institute of Radiological Sciences (NIRS), Japan. The energy dependence is found to be
interpreted well by the Birks equation [1], consistent with the presented data from Ref. [2].
Fig.3. Light output response of BGO to proton (left) and 4 He (right).