Basic assembly of 4 geophone pods has been done. their spectrum looks healthy (ref. /users/VIS/TypeB/180323/, blue is the signal of the one used in BS now, which was measured long time ago, and the others are the signals which are newly assembled).
-the flanges of the pods are not closed yest since the amount of the following stuffs is not enough:
--phi-150 gasket * 1
--rubber sheets (3mm * ~phi77) * 9
-For the completion of the assembly, we have to put the above inside the pods and then we have to close the flanges.
--this work is going to be done in this April.
Notes:
-the channel for GEO-H1 of SR2 rack is used in this test. Not yet re-changed.
-used pre-amp bords are sn.160, sn.155, sn.146 and sn.149
-a swager(black one) has been returned into SRM booth from IYC booth.
