(The app updates every 2 seconds.)
1. Beam Current
The graph below shows the electron beam current in mA for the last 24 hours. If the beam is off, due to a trip or scheduled outage, the area under the graph turns red, as a quick visual indicator.
2. 1/e lifetime
This is time at the present decay rate for the current to decay to 1/e of the present value. It is derived from a linear fit to the previous 3 minutes of beam current. Note that the old display gave a “lifetime” which was double the half-life, which gave values a factor of 1.386 higher.
3. Injection times
These are the scheduled injection times. The actual injection time may vary if an injection delay has been requested, or there are technical issues. For info on the next injection see 7 and 9 below.
4. Electron beam parameters
X-RMS and Y-RMS: These are the RMS electron beam centroid deviations, integrated over 1 second, from the nominal beam position for the 48 beam position monitors located in the storage ring.
XSR-V and XSR-H.
The XSR diagnostic beamline uses a pinhole camera to image the x-rays emitted by the electron beam inside a dipole magnet. XSR-V and XSR-H are respectively the vertical and horizontal baseline widths (4s) of the X-ray beam at the camera, located 19m from the source point, and provide a relative indication of the electron beam size.
Integrated current. This is reset at the beginning of the calendar year.
5. Insertion devices
|05-2||BMIT superconducting wiggler peak field|
|06-1||HXMA superconducting wiggler peak field|
|07-1||BioXAS undulator gap|
|07-2||BioXAS wiggler gap|
|08-1||CMCF undulator gap|
|10-1||SM undulator gap. “L” and “C” indicate linear and circular polarization, respectively|
|10-2||REIXS undulator gap. “L” and “C” indicate linear and circular polarization, respectively|
|11-1||SGM undulator gap|
|11-2||VLS-PGM undulator gap|
6. Next injection and countdown
This is the actual planned next injection time. This is updated manually, while the countdown is automatic.
7. Isotope LINAC
This indicates whether the LINAC for the CLS medical isotope project is in operation.
You may need to re-scale your browser window for these to be visible. Routine messages are in white, more “urgent” messages are in yellow.