Warning: Undefined variable $s in /var/www/public_html/osl/classes/DAO.php on line 959
NAOJ GW Elog Logbook
LOG-IN
Displaying report 1-1 of 1.
KAGRA VIS (General)
Print this report.
TomotadaAkutsu - 18:10, Friday 13 March 2015 (43)Get code to link to this report
PR2/PR3 OSEM issues
PR2/PR3 OSEM report 20150313
About reducing diameters of LED/PD holders' cylinder parts, I asked NAOJ/ATC ME shop to get a cost estimation from an outside company, and they got it, and was very cheap, so this work will be just ordered to the company.

Comments related to this report
TomotadaAkutsu - 23:43, Wednesday 18 March 2015 (55)

Please check the following files showing the modifications of OSEM LED and PD holders for PR2 and PR3 (hope - only) . The concept is that using already exisiting parts as far as possible anyhow!

The design will be checked by VIS people, and then a few test parts will be purchased.

Some parts of the LED assy and all parts of the PD assy have compatibilites with new (unapproved by VIS still) design of OSEM LED/PD holders in the following.

Hope they are approved immediately, and then I'd like to start with purchasing a few samples. I have already got some cost estimations from several companies and started comparison.

The reason why some parts have JGW-Dxxx, but others not is, I guess, there would be some difference in the concept for controlling things between VIS and me.

TomotadaAkutsu - 17:16, Thursday 19 March 2015 (56)

Took a pic of two LED candidates:

  • OP232 (the golden one)
  • TSTS7100 (the silver one)

The packages seem similar forms, but be careful, positions of the anode and cathode are opposite!! to the flange's boss.