We performed the installation of the additional shakers around the IFI shaker.
Before that, we performed the cable connection, vibration test and various shaker injection with 128 Hz vibration around the IFI chamber.
From this result,
chamber leg may not affect to DARM,
Feed through and cable may not affect to DARM,
Chamber itself several affect to DARM
So, as the first step, we decided to install one new shaker on the beam duct, and remaining two new shakers installed to the remaining bellows leg.
Mini shaker1 (Already installed)
On the bellows at the -X side
K1:PEM-EXCITATION_MCF0_RACK_9_EXC
Mini shaker2 (New)
On the beam duct between IFI and IMM chamber
K1:PEM-EXCITATION_MCF0_RACK_10_EXC
Mini shaker3 (New)
On the bellows at the +X+Y side
K1:PEM-EXCITATION_MCF0_RACK_11_EXC
Mini shaker4 (New)
On the bellows at the +X-Y side
K1:PEM-EXCITATION_MCF0_RACK_12_EXC
Mini shaker2 (New)
On the beam duct between IFI and IMM chamber
K1:PEM-EXCITATION_MCF0_RACK_10_EXC
2025/02/18 11:29:30 - Small shaker IFI beam duct
Excitation : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
50 - 200 Hz, 1Hz resolution, 10 s in each measurement, 300 cnt
We installed the accelerometers near the mini shakers.
We removed them at the 4th March.