Speaker
Description
Ionization chambers are widely used in nuclear physics experiments and their role has recently expanded to active target applications. VOICE (Vertically Oriented wire Ionization Chamber with sEgmentation) is being developed at the Center for Exotic Nuclear Studies (CENS), Institute for Basic Science (IBS), to enable direct measurements of alpha induced reaction cross sections. The detector adopted vertically oriented electrodes and a Frisch grid to enhance energy resolution and employs a $^{4}$He active gas target to directly observe reaction products in inverse kinematics. For commissioning, VOICE will measure the $^{40}$Ar + $\alpha$ reaction using a well established channel to validate its performance. The thick target method will be adopted to scan a broad center of mass energy region and demonstrate the detector’s capability. The commissioning experiment is currently being prepared at RAON. In this presentation, more details of the detector status and commissioning plan will be discussed.