X-Ray tube noise reduction using non-glass inserts

Details X-Ray tube noise reduction using non-glass inserts X-Ray tube noise reduction using non-glass inserts

1992-06-01

1993-10-12

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378125, 378201, 313317, H01J 500

Patent

active

052532844

ABSTRACT:
Noise is reduced in an X-ray tube by inserting a non-glass insert between sections of the glass vacuum tube. The non-glass insert has an impedance which is significantly different than the impedance of the glass tube sections. This impedance mismatch inhibits vibration energy from passing from one glass section to the other. In addition to having a different impedance than the glass sections, the non-glass insert can be made of a heavier material, thus presenting sufficient mass to dissipate vibration energy. The non-glass insert is connected to the glass sections by a pair of connecting members, each of which has a coefficient of thermal expansion closely matching that of the glass sections. Each connecting member has a ring with an annular flange extending perpendicularly therefrom. The ring of each connecting member is attached a respective one of the glass sections and each flange is attached to the insert. Alternatively, the non-glass insert can be inserted between an end of the vacuum tube and its support structure.

REFERENCES:
patent: 4019080 (1977-04-01), Besson
patent: 4433432 (1984-02-01), Nii et al.
patent: 4935948 (1990-06-01), Kim

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