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Entry  Wed May 25 18:29:09 2011, tara, Notes, optic, purchases 
    Reply  Mon May 30 15:23:53 2011, rana, Notes, optic, purchases 
       Reply  Tue May 31 11:31:18 2011, tara, Notes, optic, purchases 
          Reply  Wed Jun 1 01:50:35 2011, Koji, Notes, optic, purchases 
             Reply  Wed Jun 1 21:00:05 2011, Frank, Notes, optic, purchases 
Message ID: 610     Entry time: Wed Jun 1 21:00:05 2011     In reply to: 609
Author: Frank 
Type: Notes 
Category: optic 
Subject: purchases 

we have to design our own. The 40m one has 2" mirrors (too large, we don't have the space), wrong height for incoming/outgoing beam and is clamped to the table, which i think is bad in terms of stability.
The design principle does not look much different compared to the original refcav periscope design, except for the mirror holder itself. That was bad designed for the old one.

 

Quote:

They are found in DCC. Some comments

- You can not steer the beam. The beam should be steered before or after the periscope.

- The side plates were too thick. It can be 1/2" thickness to reduce the total weight.

D1001446-v1 40m Vertex Green Locking Periscope A Base Daisuke Tatsumi et al. Auxiliary Optics
Basic R&D
15 Jul 2010
D1001447-v1 40m Vertex Green Locking Periscope A Sidebar Daisuke Tatsumi et al. Auxiliary Optics
Basic R&D
15 Jul 2010
D1001448-v1 40m Vertex Green Locking Periscope A Mirror Holder Daisuke Tatsumi et al. Auxiliary Optics
Basic R&D
15 Jul 2010
D1001613-v1 40m Vertex Green Locking Periscope A PTFE Post Koji Arai Auxiliary Optics
Basic R&D
15 Jul 2010

Quote:

I looked up 40m elog and found Daisuke's design for periscope. I'll make a sketch FSS' periscopes.

The design for 40m pericopes by Daisuke can be found here .

Quote:

The periscopes for the refcav ought to be made custom. None of the store bought type are stiff enough. Koji has a design from the 40m green that Daisuke made.

 

 

 

 

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