= 20180611 = * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5241]] == Today's activities == Workers: Akutsu, Ikenoue, Simon, L. Shimizu, Yokozawa * Took out the inner tower from the IXA chamber. * Was dangerous when it was hung up to float. * Inserted the NAB suspension into the inner tower. * Some screws were about to touch or going to touch the inner tower so we removed them. * There were several points to be noted so that the NAB suspension won't crash against the inner tower, so be careful. * Found everything are not fully consistent. Especially we needed to decide what should be used as reference. Today we used an array of through holes as the reference; the NAB suspension was somehow moved so that the interface through holes can overlap the screw hole array at the one side; the other side of the inner tower showed the through holes were totally useless to access the NAB suspension. * Then measured several parts. == Wanted! == * Long ruler; use with a laser lever == Issues == * We found installing the dampers is mostly impossible the current structure; !!!! Urgently discuss how to resolve this!!!! * We found the relative positions are not perfect and need to be resolved finally when the NAB would be suspended. == Next plans == * Insert the NAB+tower into IXA * Alignment and adjustment