We investigated the DARM specturm change by adding the material (Donoどのう) on the beam duct between IFI and IMM.
One material had about 20 kg, we installed totally three materials.
13:47 - 49 Completed the 1st material (+Y upper) and took data
13:53 - 55 Completed the 2nd material (+Y lower) and took data
14:05 - 08 Completed the 3rd material (-Y upper) and took data.
Even in any cases, the DARM sensitivity didn't change
