Cryopayload's Action Item List

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General Descriptions

This is a list of action items identified in the cryopayload meeting after its kick-off (2013 Nov 15). If you want to know the previous information or historical path to the cryopayload meetings, please refer to CRY-AOS meeting.

Action Items

A/I#

Identified on

Assigned to

Status/Output

Related to

Description

Due date

001

2013 Nov. 19

Sekiguchi, Hirose

Closed. Takanori and Osamu Miyakawa found the document about OSEM (it includes the schematic design of circuit) by themselves.

Overall design

Ask somebody in LIGO details of the circuit for OSEM.

2013 Nov. 26

002

2013 Nov. 19

R. Takahashi

Urgent! He has already asked, but no reply so far. If he will not receive anything by the next meeting, we must make drawings by ourselves (we copy Type B design and rewrite and so on).

Overall design

3-D design drawing of Type-A is necessary (ASAP!). Ask to Gianni.

2013 Nov. 26

003

2013 Nov. 19

R. Takahashi

Urgent!

Vertical spring

About blade metal spring (vertical spring), the schedule and strategy and so on will be summarized by R. Takahashi, Ishizaki, Sekiguchi, and K. Yamamoto, and reported in the next meeting.

2013 Nov. 26

004

2013 Nov. 19

K. Yamamoto

Urgent!

Material

About the masses, including a recoil mass, intermediate mass, intermediate recoil mass, and platform, the evaluation of the eddy current damping is necessary. K. Yamamoto will ask (1) to Eric Hennes how much he can make his effort for this problem and whether he can provide files for Finite Element Analysis. (2) to Ando or Aso whether Nishi's file for eddy current damping still remains.

2013 Nov. 26

005

2013 Nov. 19

D. Chen

Urgent!

Control

D. Chen will ask Uchiyama whether a picomotor can survive at cryogenic temperature.

2013 Nov. 26

006

2013 Nov. 19

D. Chen

Urgent!

Control

D. Chen looks for design drawing of a stage for Type-B, and some commercial stages.

2013 Nov. 26

007

2013 Nov. 19

K. Yamamoto

Urgent!

Control

The schedule for the control system should be considered again.

2013 Nov. 26

008

2013 Nov. 19

K. Yamamoto

Urgent!

Control

About the procurement of the OSEMs, K. Yamamoto will consult R. Takahashi.

2013 Nov. 26

009

2013 Nov. 19

T. Suzuki (?)

Urgent!

Control

Check whether the thrust bearing can work at the cryogenic temperature.

2013 Nov. 26

010

2013 Nov. 19

D. Chen (?)

Urgent!

Control

About photodiode, check about out gas; check noises by 10-m long line; check whether the window of photodiode be removed.

2013 Nov. 26