Figure 5.

(a–e) Five MSPC detector set-ups and “ICS” images on detectors. (a_1,2) A rectangular cathode MPC detector attached to the cathodes (a₁) and images of two “ICSs” on it (a₂); (b_1,2) A rectangular cathode MSPC detector installed 3 cm away from the cathodes (b₁) and image of two “ICSs” on it (b₂); (c_1,2) A rectangular MSPC detector placed on the PFD wall (c₁) and images of two “ICSs” on it (c₂); (d_1,2) A circular sheet, 1 mm thick, with 5 cm circular opening in the middle which can separate the PFD volume into two upper and lower spaces (d₁) and an image of one “ICS” formed on it (d₂); and (e_1,2) A rectangular PC sheet attached around 3 cathodes to shield ions to reach a wall detector while the other 3 cathodes were allowed to emit ions to reach another wall MSPC detector (e₁), and two separate images; one image on the wall detector with the lower part shielded from ions emitted from the “anode cathodes array” (left) and one image of “ICS” on a wall detector with no shield in front of it (right) (e₂).