Method of making laser fusion debris shield

• US 4,439,259 A
• Filed: 10/01/1982
• Issued: 03/27/1984
• Est. Priority Date: 01/23/1981
• Status: Expired due to Fees

• Current Assignee: Ropintassco Holdings, L.P. (Roper Technologies, Inc.)
• Original Assignee: Acton Research Corp. (Roper Technologies, Inc.)
• Inventors: Flint, Bruce K.
• Primary Examiner(s): Hoffman, James R.
• Application Number:
  US06/432,274
• Time in Patent Office: 543 Days
• Field of Search: 156/245, 427/164, 264/1.1
• US Class Current: 156/245
• CPC Class Codes: G21B 1/23 Optical systems, e.g. for irradiating targets, for heating plasma or for plasma diagnostics
• CPC Class Codes: Y02E 30/10 Nuclear fusion reactors

Abstract

A shield for admitting laser beams to a target in a reaction chamber while obstructing exit of target ejected debris from the chamber is formed by coating the opposable faces of two supports with a layer of release agent and a coating protecting the release layer. A bead of transparent epoxy compound is then pressed between the two supports to form an epoxy shield. While the shield is on one support a framing holder is epoxied to the shield.

Claims

1. The method of making a high energy reaction debris shield comprising:

applying a release coat to the opposable faces of two supports;

applying a liquid, transparent epoxy compound on the coat of one support and pressing the two supports face to face to shape an epoxy shield between the faces, and allowing the epoxy to cure;

removing at least one support at the release coat and attaching a holder at the periphery of the shield; and

removing the release coat from the shield to form a window optically transparent and physically resistant to the high energy and physically obstructive of reaction debris.

2. The method according to claim 1 including the steps of applying a protective film for the release coat prior to applying the epoxy compound, and removing the protective film from at least the periphery of one coat prior to attaching the holder thereto.

3. The method according to claim 1 or claim 2 wherein the holder is attached to the periphery of the shield while the shield is on one support.

4. The method according to claim 1 wherein the face of one support deviates from planar shape.

5. The method according to claim 4 wherein the face of one support is lenticular.

6. The method according to claim 1 wherein the shield is resistant to damage from laser frequency energy.