Agenda/Minutes of the VIS Meeting on 2017/1/6

2017/1/6 13:30 -

Participants: Takahashi, Okutomi, Ishizaki, Hirata, Sato, Aso, Mark, Fabian, Shoda, Enzo, Akutsu

Progress report

Schedule Chart : the broken file on the project server was fixed. To be updated soon.

Type-A (Takahashi)

Type B (Mark)

Type-Bp (Shoda)

IMMT (Ohishi)

Watchdog system (Tanaka)



Smaller coils/magnet bases (Aso)

How to track design changes ?

We will implement the following design management system

  1. The latest design files (CAD models, 2D drawings) will be put in the KAGRA Dropbox.
    • The directory structure will be something like this
    • Dropbox/Subsytems/VIS/Type-A/Latest/
      • Latest/ containts CAD/ 2D/ ECO/ directories.
    • CAD/ folder contains the latest CAD models
    • 2D/ folder contains the latest 2D drawings
    • ECO/ folder contains the Engineering Change Order documents
  2. In order to make a change to the design, the person who is proposing the change will send an Engineering Change Request (ECR) to the leader of the team (for example, Takahashi-san in the case of Type-A). In stead of submitting a formal ECR document, this request can be a discussion over email or verbal discussion.
  3. The team leader evaluates the ECR and decide whether this needs to be discussed with the entire VIS group (big changes) or can be approved by each team (small changes). If the ECR is small, the team leader can approve it. If not, the leader should request Aso to discuss the issue at the VIS meeting.
  4. Once the ECR is approved, the person proposing the change should prepare an Engineering Change Order (ECO) document to describe the change.
  5. ECO should be uploaded to the JGWDoc with E number.
  6. ECO should also be put in the ECO folder of the Dropbox.
  7. A summary of the ECO should also be put on the Wiki page of the change log for each suspensions to make it easier to browse the past changes.
  8. Aso will make a template for ECO.

How to keep track of the delivered items

We will keep an inventory of the items for each suspension type.

  1. The inventory is in a form of a Google Sheet
  2. Type-Bp Inventory Sheet

  3. Type-A and Type-B will make similar inventory sheets

General precautions to keep things from missing

  1. Keep a group of items used together, e.g. gluing jigs, in a box. Do not scatter the parts.
  2. Put a label on boxes. Preferably, take a picture and upload it to the google photos. Then paste the link URL to the photo to the inventory sheet.
  3. When wrapping clean items with Aluminum foils, put a label on it

Site work plan for the next week

Travel Plans

Next meeting

On 2017/1/13(Fri)

KAGRA/Subgroups/VIS/VISMinutes20170106 (last edited 2017-01-06 20:47:56 by YoichiAso)