Guides 1-10

Motors corresponding to individual collimation trays.

System Name: Guide01, ..., Guide10

Type: Motor

Brief Description

These devices control movement of long trays between the protection shutter and the sample area used to achieve variable collimation. Guide 1 is the closest to the velocity selector. Guides 2 through 8 have three correct positions: GUIDE (a 1.5m section of neutron guide is in), APERT (a 5cm aperture located upstream of the tray), and EMPTY (nothing in the beam).

Guide 1 contains a GUIDE and 3 apertures (~1.4cm, ~2.5cm, and ~3.8cm apertures) for four calibrated positions.

Guide 9 is usually in the MIRROR (silicon mirror) or APERT (source aperture) positions. If focusing optics is used, Guide 9 is moved to EMPTY position.

Guide 10 is in EMPTY position unless focusing optics is used. In that case, the user may choose between calibrated positions which differ among instruments and correspond to available lenses.

Restrictions

Devices which cannot be moved simultaneously with these devices:

Other Restrictions:

None

Interactions

Devices which affect this device:

Devices which are affected by this device: