D1 Sample Microscope

Detlef Smilgies, CHESS

Introduction

The D1 microscope consists of a Navitar motorized zoom and focus module with on-axis lighting, as well as several front lenses (0.5x, 0.75x, 1x = no lens, 2x) as well as 2 tubes (1x, 2x). Images are collected by streaming video from the SONY CCD camera. The system is controlled by the Crystal Centering program developed in the MacCHESS group (Richard Gillilan, Dave Schuller).

Note: Most of the features of the centering software on the bottom control bar features are currently not used (the spindle rotation is only for crystallography, the sample x and z translations are currently only supported within SPEC.)

Cabling & re-activation

Most of the cabling is already done and componets are kept in the D1 hutch crate.
For re-activation of the centering system (for instance after CESR-TA run):


Starting and using the CrystalCentering program


Calibrating the microscope

NOTE: this part is for beamline staff and expert users only

The CrystalCentering program, as used at D1, has 5 calibration parameters which are found in conf/server.properties.
When changing a value, the program needs to be restarted.

Calibration procedures

note: this procedure needs to be repeated, whenever the microscope is remounted, or lenses, tubes or cameras have been changed