X-ray diffractometer with shutter control

Details X-ray diffractometer with shutter control X-ray diffractometer with shutter control

1991-06-06

1992-04-21

Howell, Janice A.

X-ray or gamma ray systems or devices

Beam control

Shutter or chopper

378151, 250233, G21K 104

Patent

active

051075300

ABSTRACT:
A reliable shutter position indicator for an x-ray diffractometer utilizes an optical shutter position sensor for detecting the position of a shutter of the x-ray diffractometer. In one embodiment, a pair of optical isolators are utilized with an arm coupled to the shutter shifting to a position to interrupt a light beam of the optical isolators when the shutter is in either the open or closed position. The controller of the x-ray diffractometer then compares the detected shutter position with the expected shutter position to determine whether a shutter error is present.

REFERENCES:
patent: 4195229 (1980-03-01), Suzuki
patent: 4962517 (1990-10-01), Koga

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