CHX:Hints

This page provides brief notes/hints for using the CHX beamline at NSLS-II.

General

Status

• NSLS-II machine status (twitter)
• CHX olog

Contact

• Beamline: x1411
• Floor coordinator: x5046
• Control room: x2555

Controls

ophyd

• Start:
  • cd ~
  • ./ophyd
• Examples:
  • wh_pos() : motor positions
  • mov(diff_xh, 1.0) : move motor
  • movr(diff_xh, -1.0) : relative motion
  • movr([diff_xh, diff_yh], [-1.0,-1.0]) : multiple motions

Control System Studio (CSS)

• Start:
  • run-css &
• Use:
  • Ctrl+mousewheel : zoom

Replay

• ./replay
• Allows access to log entries and graphs.

Instrument

Sample Motion

• Sample motion uses diffractometer. Sample stage is on "horizontal controls" (diff_xh, diff_yh).
  • diff_xh : moves sample inboard/outboard.
    • Positive motion moves sample outboard (left, beam POV); i.e. beam moves right along sample.
    • Negative motion moves sample inboard (right, beam POV); i.e. beam moves left along sample.
  • diff_yh : moves sample up/down.
    • Positive motion moves sample up; i.e. beam moves down along sample.
    • Negative motion moves sample down; i.e. beam moves up along sample.
• Diffractometer also has

WAXS Detector Motion

• delta : goniometer arm arcing up
• gamma : goniometer in-plane rotation