Differences between revisions 182 and 183

Scraps of text for incorporation in the VIS Meeting Minutes

Type B (Mark)

Past week report

At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):

We solved the problem with the OSEMs: cables had been plugged into the confusingly named "PD current monitor" outputs (actually LED current monitors), not the "OSEM outputs".
We solved a problem with the real-time model freezing which turned out to be the IO chassis having lost power.
We took some mass off the IM to allow for the weight of the cables, and readjusted it in pitch and roll.
We aligned the IRM to the IM and set the OSEMs to mid-range.
We added ballast to the BF.
We changed the receptacles for the SF-BF rod. The low receptacle did not fit properly into the BF keystone and Hirata-san had to file it.
We fixed a broken wire on the BF yaw pico, retested the pico and added the BF cap.
We cabled and tested the BF cap picos.
We lifted the BF and weighed and balanced it.
We installed the SF ring and brought in the SF.
We cabled the SF LVDT and did a quick test (not a full calibration).
We replaced non-vacuum compatible cables in the PI, removed various sticky labels and wiped it with ethanol.
We tried to hook the SF-BF rod but found the hole in the hex cable clamp was too small for the 8 mm rod head. We enlarged the hole but then found the PEEK pieces were too loose. We tried using foil, but then managed to lose a PEEK piece into the BF, so we will need to remove the cap of the BF to get it.

Plan for week of 8/28

Kamioka: Mark (except Tue), Ohishi-san, Fabian (except Tue), Enzo (except Tue), Hirata-san, Yoshioka-kun (Fri), Kozu-kun (Thu, Fri).

Fix/adjust IRM OSEMs.
Add BF cap; cable and test BF-1 and BF-2 picos.
Lift and weigh BF/IRM/IM/RM/BS; adjust ballast mass.
Crane in SF.
Suspend BF/IRM/IM/RM/BS.

Plan for week of 9/4

Install SF cap; route cables.
Lift and weigh SF/BF/IRM/IM/RM/BS.
Adjust SF ballast.

Vacation Info

Mark: TBD Mid-Oct

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-10-28 10:02:46 by fabian.arellano)

-  ⇤ ← Revision 182 as of 2017-09-01 12:38:57 → 
  Size: 1135
  Editor: MarkBarton
  Comment:
+   ← Revision 183 as of 2017-09-01 13:47:28 → ⇥
  Size: 2134
  Editor: MarkBarton
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 8:
- * We solved the problem with the OSEMs: cables had been plugged into the LED current monitor outputs, not the PD outputs.
+ * We solved the problem with the OSEMs: cables had been plugged into the confusingly named "PD current monitor" outputs (actually LED current monitors), not the "OSEM outputs".
 Line 11:
- * We aligned the IM
+ * We aligned the IRM to the IM and set the OSEMs to mid-range.
 * We added ballast to the BF.
 * We changed the receptacles for the SF-BF rod. The low receptacle did not fit properly into the BF keystone and Hirata-san had to file it.
 * We fixed a broken wire on the BF yaw pico, retested the pico and added the BF cap.
 * We cabled and tested the BF cap picos.
 * We lifted the BF and weighed and balanced it.
 * We installed the SF ring and brought in the SF.
 * We cabled the SF LVDT and did a quick test (not a full calibration).
 * We replaced non-vacuum compatible cables in the PI, removed various sticky labels and wiped it with ethanol.
 * We tried to hook the SF-BF rod but found the hole in the hex cable clamp was too small for the 8 mm rod head. We enlarged the hole but then found the PEEK pieces were too loose. We tried using foil, but then managed to lose a PEEK piece into the BF, so we will need to remove the cap of the BF to get it.