DTT TFs were taken on the TMSX (TMTS) suspension this morning, to check for signs of rubbing etc following close-out of the BSC9 chamber (see LHO aLOG entry 13117), as follows:-

- TMSX M1-M1 undamped (2014-08-01_0730_H1SUSTMSX_M1_ALL_TFs.pdf)

BSC9 ISI Status: ISI damped and ST1 high isolation.

TMSX alignment: No offset was applied during this measurement.

The above measurements have been compared with the 'best' performance previously obtained for H1 TMSX i.e. taken in-vacuum (alltmtss_2014-08-01_Phase3a_H1TMSX_M1_Doff_ALL_ZOOMED_TFs.pdf), the plot key is:-

Blue Trace = Model Prediction.
Orange Trace = H1 TMSX M1 (2014−05−09_1083659254), Phase 3b (in-vacuum).
Black Trace = H1 TMSX M1 (2014−08−01_0730), Phase 3a (in-air).

Summary:

Following chamber close-out TMSX appears healthy with no indications of rubbing. Also, compared to previous measurements TMSX looks to be performing very well, with no sign of split transverse peaks that we had seen in the past. Therefore, these TFs raise no concerns.  

All data, scripts and plots have been committed to the sus svn as of this entry.