Type-B work TO DO list

[naibafomsare]

This GitHub "issue" does not describe a real issue, but it is for writing TO DO lists of concrete actions required in Type-B work in general. The lists items are reminders and many will not necessarily be understood by others without a context, which is not given here.

Related documents:

• Detailed explanations are in a document currently in a temporary location.
• Same document in JGWDoc: JGW-E2011534.

[naibafomsare]

For the week of the 5th of October:

• [x] Go to the mine and check the new posts fit well into the dial gauge holder brackets.

• [x] Get the scale from the draft chamber area and weigh the t=15mm thick ballast masses for the top of the IM. Theoretically they are 375 grams but that’s the 3D-CAD value.

• [x] Update the SR3 IM mass budget using the measured value of the t=15mm mass.

• [x] For ballast mass to add on top of BS BF, put aside two identical groups of 66 grams each (132 total).

• [x] For ballast mass to add on top of SR3 BF, put aside two identical groups of 21 grams each.

• [x] Find M8, M6 and M5 washers and measure their masses and outer diameters. Compare with pictures of the SR3 IM ballasts masses.

• [ ] Check the size of the thread used on top of BF and F1 GAS filters for ballast masses. It should be M6.

• [x] Check what BUMAX and SDC screws we have: write thread, length and weight. We want to use the as ballast masses.

• [x] Look for the assembly frame cloth cover.

• [ ] Weigh the F0 yaw stepper motor mechanism with the limit switches.

• [ ] Look for the PEEK cable ties.

• [ ] Write down the part number of the pins we've been using in the probe points of the LVDT drivers.

• [x] Take a picture of the LVDT driver showing the three boards inside.

• [x] Take a picture of the central board of the LVDT driver to show the probe points to use.

• [x] In LVDT cards check the names of the variable resistors for the input signals. In a klog 9658 I used A,B,C and D because I didn't find labels on the board, however, Joris says they are named D0,..., D3.

• [ ] Look for SDC screws in Monotaro or the like: M6 X 35 mm or longer. We will know more when we check the BS BF.

[naibafomsare]

• [x] Watch Mirapro opening the chambers and removing the bellows.

• Recover the connection of the IM OSEMs in

• [x] SRM,

• [ ] SR3

• [ ] SR2

• [x] Wipe the ladders and step ladders.

• [x] Wash the ballast masses and various components.

• [x] Find the bars to lock the RM to the IM, its screws and multi-purpose cube spacers.

• [x] Get the scale; buy batteries for it.

• [x] Get a stainless steel table inside of the clean room by SR3 and SRM chambers.

• [x] Get the tools: Allen keys, screw drivers, etc. Wipe them if they have been with dubiously cleaned components.

• [x] Find the stainless steel mirror! I didn't see it when cleaning and we might need to buy a couple.

• [x] Find out how to use the fibre optic camera with the Surface computer.

• [x] Get the lamps and the chargers inside of the clean room. Wipe them.

• [ ] Find the bubble levels.

• [ ] Inspect visually SRM IM cables looking for a cable pulling.

• [x] Help Shimode-san and Yokozawa-san with checking the SR3 and SR2 racks.

• [x] Remove screws from the cap of BS chamber.

• [x] Remove screws from the cap of SRM chanmber.

• [x] Remove screws from the side door of SRM vacuum chamber.

• [ ] Get the components of the BS F0 yaw stepper motor and pre-assemble it.

• [ ] Check cables for F0 yaw stepper motor with limit switches:

• Request: minutes of the VIS meeting on 2020/03/06

• Sato-san's alternative: minutes of the VIS meeting on 2020/08/28

Measure LVDT card resistances in:

• [ ] PRM

• [x] PR3

• [x] PR2

• [ ] BS

• [ ] SR2

• [ ] SR3

• [ ] SRM

[naibafomsare]

This is a rough To Do list for the work in SRM. Ver likely there is a Github issue open for it but I'll write it here for now:

• Open the top of the chamber and lock the IP.
• Open the chamber doors and set the Koach filters in front of them.
• Lock the lower breadboard.
• Insect visually the payload in case the problem can be identified easily. Pay special attention to the LVDT-magnet-actuator underneath the BF.
• If nothing wrong is found, proceed to testing individual cables: release one cable at the time from its clamp(s) and check the BF LVDT readout when the keystone height is below zero. Clamp the cable again before proceeding to the following one.
• In case it is not a cable, consider taking a look to the inside of the filter with the optic fibre camera. The holes through which insert it are shown in the procedure document.