초록 ▼

An accelerator for charged particles comprising: a vacuum tight chamber, means for producing a beam of particles, and means for inhibiting secondary emission. The means for inhibiting secondary emission comprises outwardly extending wedge-shaped members covering the inner walls of the vacuum chamber

An accelerator for charged particles comprising: a vacuum tight chamber, means for producing a beam of particles, and means for inhibiting secondary emission. The means for inhibiting secondary emission comprises outwardly extending wedge-shaped members covering the inner walls of the vacuum chamber. The outwardly facing surfaces of the wedge-shaped members are covered with a nonevaporable getter metal.

대표청구항 ▼

An accelerator for charged subatomic particles said accelerator comprising: A. A vacuum chamber defined by gas-tight walls, B. A means within said chamber for producing a beam of charged particles, and C. A means for inhibiting secondary emissions said means comprising outwardly extending wedge-shap

An accelerator for charged subatomic particles said accelerator comprising: A. A vacuum chamber defined by gas-tight walls, B. A means within said chamber for producing a beam of charged particles, and C. A means for inhibiting secondary emissions said means comprising outwardly extending wedge-shaped members covering the inner surface of the walls of the vacuum chamber, each said member comprising: 1. a sheet metal strip, said sheet metal strip comprising: a. a first wing parallel to and attached to the inner surface of the wall, b. a first sheet metal segment attached to the wing and extending outwardly from the wall, c. a second sheet metal segment attached to the edge of the first segment furthest from the wall, said second segment being equal in length to and forming a dihedral angle of less than 90°with the first segment, and d. a second wing attached to the second segment, said second wing being parallel to and attached to the inner surface of the wall, and 2. a coating on both sides of the sheet metal strip, said coating consisting of particles of a nonevaporable getter metal embedded in the sheet metal strip without substantial reduction of the surface area of said particles, and 3. a means for attaching the sheet metal strip to the inner surface of the wall of the vacuum chamber, said means comprising spot welds attaching the first and second wings to the inner surface of the wall wherein the first and second wings of the sheet metal strip extend toward each other, the first wing forming a dihedral angle of less than 90°with the first segment and the second wing forming a dihedral angle of less than 90°with the second segment.