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Size: 2284
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Size: 2400
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| Deletions are marked like this. | Additions are marked like this. |
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| * Mark and Fabian worked at Kamioka: * All the parts for the security structure were located. The clamp pieces for the IM are being taken back to Mitaka to have extra screw holes added. * The BS/PR2/SR2 area was cleaned and tidied to allow floor removal and assembly frame construction. * 21 "Type 1" cables (PI-Flange, Signal) and 15 "Type 5" cables (OSEM) were tested. They all passed. Sufficient tested "Type 2" cables (PI-Flange, Motor) were located in the PR3 area. * Hirata-san worked on the Inventor assembly, adding views (originally defined by Mark) of the different phases of construction. * Hirata-san shipped 7 SFs and some parts to Kamioka. * Hirata-san made assembly drawings of the damper rings and cable clamps for SR. * Hirata-san liaised with Mirapro about the frame assembly. |
* Mark and Fabian worked at Kamioka with Fujii-san: * We attempted to measure the tilt sensitivity of the accelerometers by adding shims under the legs but gave up when we discovered that picking up and putting down the accelerometer perturbs the zero point even without shims. We will probably need a special tilt stage to do this properly. * We took some frequency and Q measurements. The results were amplitude dependent. Joris thinks that this is due to not operating the accelerometers close enough to zero DC output. * We set up for a test of the geophone noise. One geophone is reading half the output of the others - one of the adapter cables is broken. * Hirata-san: * Received extra compensation masses and washed them. * Received PI guides, assembled them and shipped them to Kamioka. * Received backup set of pillar for security structure (with M10 instead of M12 holes at top). * Removed adhesive from base of BS flags in preparation for regluing. * Did assembly drawings for cable clamps and other add-on parts for BF and SF. |
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| * Takahashi-san has ordered extra connectors (due any day) and will get a company to make the cables. | * Connectors RECEIVED, cables being made. |
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| * Need large quantity of male and female D-Sub 9, IDC ribbon connectors - Takahashi-san is getting a quote. * Can we make SR wire breakers bigger? * Fukushima-san will start on machining test soon (as of 5/27). |
* Connectors RECEIVED. * SR machining test ONGOING. |
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| * Crane scale - RECEIVED | * "Ceiling" work in BS clean booth (removal of second floor section) scheduled for Fri 7/1. * Assembly frame construction scheduled for 7/4 |
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| * Nail-head parts: quote from Mirapro received, not urgent, will be combined with assembly frame order. | * Nail-head parts - ordered with assembly frame, will arrive next week. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Type B Past Week Summary
- Mark and Fabian worked at Kamioka with Fujii-san:
- We attempted to measure the tilt sensitivity of the accelerometers by adding shims under the legs but gave up when we discovered that picking up and putting down the accelerometer perturbs the zero point even without shims. We will probably need a special tilt stage to do this properly.
- We took some frequency and Q measurements. The results were amplitude dependent. Joris thinks that this is due to not operating the accelerometers close enough to zero DC output.
- We set up for a test of the geophone noise. One geophone is reading half the output of the others - one of the adapter cables is broken.
- Hirata-san:
- Received extra compensation masses and washed them.
- Received PI guides, assembled them and shipped them to Kamioka.
- Received backup set of pillar for security structure (with M10 instead of M12 holes at top).
- Removed adhesive from base of BS flags in preparation for regluing.
- Did assembly drawings for cable clamps and other add-on parts for BF and SF.
- Mark and Fabian worked at Kamioka with Fujii-san:
- Type B ongoing issues
- Wires
- Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco.
- OSEMs
- Akutsu-san is working to get wide-mouth OSEMs
Longer cables for BF->PI and SF->PI.
- Connectors RECEIVED, cables being made.
- Feedthrough Adapters
- Connectors RECEIVED.
- SR machining test ONGOING.
- Installation stuff
- "Ceiling" work in BS clean booth (removal of second floor section) scheduled for Fri 7/1.
- Assembly frame construction scheduled for 7/4
- Ballast masses for payload
- Initial batch received - ordered extra smaller ones to allow for adjustments.
- Lower breadboard stuff
- Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
- Breadboard springs (in manufacture, expected end of July)
- Nail-head parts - ordered with assembly frame, will arrive next week.
- Documents
BS Assembly Procedure E1504235, E1504235 draft
- Wires