1.1. Beamline Control

This is the same as the “BM Main Control” button on the “GSECARS Sector 13 Menu” window. The main components are as the following:

1.1.1 Ring Status/Beam Position:

1.1.1.1 Storage Ring Status gives status of the storage ring

1.1.1.2 13-BM Beam Position Monitors gives ring status for 13-BM:

1.1.1.3 13_BM BMP Detail [MRD_BMbpm.adl]

1.1.2 Web Pages provides links to APS and CARS home pages

1.1.3 Vacuum and EPS

This page is the same as the “BM Vacuum / EPS” button in the “GSECARS Sector 13 Menu” window. This page gives the layout of BM beamline components and status of the equipment protection systems (EPS). Starting from the upper right corner, the Front End is where the beam exits the ring and enters 13-BM. First optical enclosure (FOE) 13-BM-A consists of Beam stops, aperture, filters and FOE slits I the slit tank, monochromator in the monochromator tank, and cold cathode in the diagonostic tank. All three tanks are connected by beam pipes which are vacuumed with independently controlled valves that can separate any tank from the rest in the event of changing vacuum. Second optical enclosure (SEO) 13-BM-D consists of BMC slit tank and BMD vertical slit tank. There currently nothing in 13-BM-C, except a beam pipe. Finally, 13-BM-D, has the BMD slit tank before the beam enters the hutch. Status of all EPS is indicated by the colored dots.

The green dots will become red when any equipment protection system (EPS) fails and the beam will be disabled.

Report any faults to Yanbin.

1.1.4 Beamline Motors

1.1.4.1 FOE Slits (compound) [4slitGraphic.adl]

This is to control the FOE slits, in order to define the incident beam size. This is viewed as if the beam is coming towards you. Both size and center can be changed either horizontally or vertically.

1.1.4.2 Individual motors.

Although this record can be used to control beam position and size, it is less convenient. Unless absolutely necessary, avoid using this record.

1.1.4.3 BMD Slits (compound)

This is the record controlling the BMD beam position and size.

Controls beam size and position using slits in the slit tank at 13-BM-D (the upstream tank). 

1.1.4.4 BMD Slits (individual)

Avoid using this one to control BM-D beam.