Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session F07: Instrumentation: Targets and Sources
9:00 AM–11:30 AM,
Thursday, November 30, 2023
Hilton Waikoloa Village
Room: Queens 6
Chair: Rebecca Toomey, Lawrence Livermore National Laboratory
Abstract: F07.00007 : Simulation study and modification of the MAIKo+ active-target field cage
10:45 AM–11:00 AM
Presenter:
Yifan Lin
(Department of Physics, Osaka University)
Authors:
Yifan Lin
(Department of Physics, Osaka University)
Tatsuya Furuno
(Department of Physics, Osaka University)
Takahiro Kawabata
(Department of Physics, Osaka University)
Motoki Murata
(Research Center for Nuclear Physics, Osaka University)
The MAIKo active-target TPC is suited to detect the low-energy decay particles from the 12C excited state. A test experiment of MAIKo using a neutron beam at En=14 MeV in 2020 showed promising results, validating our method.
To improve the statistical accuracy of the measurement, we developed a larger version, MAIKo+, with dimensions of 30.7 × 30.7 × 30.0 cm3. Simulations show that MAIKo+ could boost our yields by about 10 times, which was confirmed by another test experiment in 2022.
In the test experiment with MAIKo+, we observed the worse angular resolution for the decay particles than expected. This could be attributed to the distortion in the track data measured with MAIKo+. We aim to solve this by modifying our TPC field cage based on the electric field simulation. We will present the electric field calculation of the MAIKo+ field cage conducted using the simulation tool Garfield++. Additionally, performance tests of the MAIKo+ TPC after the modification will be discussed.
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