Ring tube x-ray source with active vacuum pumping

Details Ring tube x-ray source with active vacuum pumping Ring tube x-ray source with active vacuum pumping

1993-12-06

1995-08-01

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378123, 378141, H01J 3504

Patent

active

054386055

ABSTRACT:
A toroidal x-ray tube housing (A) is composed of multiple sections which are clamped together and sealed by elastomeric gaskets (128). An annular anode (B) is mounted to the housing with coolant passages (12, 14) extending thereadjacent. A rotor (30) is rotated within the toroidal housing by a motor (60). At least one cathode assembly (C) is mounted to the rotor adjacent the anode. The rotor is supported by magnetic bearings (40) whose active coils are separated from the vacuum region by a magnetic window (48). Alternately, a series of vanes (136, 138) are provided to divide the vacuum chamber into a high vacuum region (132) adjacent the cathode and anode and a low vacuum region (134) adjacent the motor (60) and bearings (40, 150, 152) for rotatably supporting the rotor within the housing. An active vacuum pump, preferably a ion pump (112) and a getter (114) are hermetically sealed into the vacuum region for maintaining the vacuum.

REFERENCES:
patent: 3885179 (1975-05-01), Friedel
patent: 4048496 (1977-09-01), Albert
patent: 4122346 (1978-10-01), Enge
patent: 4128781 (1978-12-01), Flisikowski et al.
patent: 4135095 (1979-01-01), Watanabe
patent: 4203036 (1980-05-01), Tschunt
patent: 4227088 (1980-10-01), Maydan et al.
patent: 4274005 (1981-06-01), Yamamura et al.
patent: 4300051 (1981-11-01), Little
patent: 4368535 (1983-01-01), Baumann
patent: 4417171 (1983-11-01), Schmitmann
patent: 4501566 (1985-02-01), Carlson et al.
patent: 4521900 (1985-06-01), Rand
patent: 4521901 (1985-06-01), Rand
patent: 4531226 (1985-07-01), Peschmann
patent: 4535243 (1985-08-01), Peschmann
patent: 4573179 (1986-02-01), Rutt
patent: 4610021 (1986-09-01), Peschmann et al.
patent: 4618970 (1986-10-01), Rand et al.
patent: 4625150 (1986-11-01), Rand
patent: 4631741 (1986-12-01), Rand et al.
patent: 4644168 (1987-02-01), Rand et al.
patent: 4821305 (1989-04-01), Anderson
patent: 4866745 (1989-09-01), Akai
patent: 4942597 (1990-07-01), Van Acker et al.
patent: 5046186 (1991-09-01), Rohmfeld
patent: 5067143 (1991-11-01), Watanabe et al.
patent: 5125012 (1992-06-01), Schittenhelm
patent: 5179583 (1993-01-01), Oikawa
patent: 5191600 (1993-03-01), Vincent
patent: 5268955 (1993-12-01), Burke et al.
"A New Design For High Speed Computerized Tomography", Maydan, et al., IEEE Trans. on Nuclear Science, Vo. NS-26, No. 2, Apr. 1979, pp. 2870-2871.
"Brushless D.C. Motors and Servo Amplifiers", Inland Motor Advertisement, 1988 IM5MWPTT189, p. 21.

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