Enomoto, R. Takahashi, Fujii (with remote help by Shoda),

= PR2 =

• We steered PR2 suspension with the traverser by -2 mm in L dof.
  • The axes of the traverser was different from reported one in klog#3502, the actual one was as shown in Figure 1.
  • we sent the signal to the driver as: (x, y) = (-1410um, -1410um) in total.
  • The alignmnet work after this work is ongoing and the next step would be decided based on it.
  • anyway, PR2 traverser was alive, it worked even in vacuum

• Note
  • First, we wanted to steer PR3 suspension, not PR2, however, it was found that the traverser driver for PR3 [1] was not in the tunnel but in Mitaka, and in addition to this one motor was disconnected electrically. We then decided to use PR2 in this time.

[1] The pin assignment of the PR3-traverser driver was different from the pthers as reported in klog#9262. To be checked.