Differences

This shows you the differences between two versions of the page.

--- playground:startup [2023/09/07 04:14] – carter
+++ playground:startup [2026/06/25 16:12] (current) – external edit 127.0.0.1
@@ Line 55: / Line 55: @@
 b.	Slowly raise the CONTROL GAIN to 2-3 for low current beams, around 5 for high current beams.  The system is now controlling in GVM mode.
-c.	Make fine adjustments to the TERMINAL VOLTAGE Dial to reach exactly the desired GVM value.
+c.	Make fine adjustments to the TERMINAL VOLTAGE Dial to reach exactly the desired GVM value.  Very fine adjustments to the terminal voltage can be made using the FINE control located coaxial to the BIAS CURRENT control with a full range of 1.5 KV.
 d.	Switch OVERVOLTAGE PROTECTION to ENABLE.
@@ Line 63: / Line 63: @@
 **4.	Beam Transport**
-a.      Use the magnet predictor tool and set Quad 1 to the predicted value.
+a.      Use the magnet predictor tool and set Quad 1 to the predicted value.  Do not make large abrupt changes to the Quad 1 current.  If a large abrupt change in current is attempted, the power supply may begin oscillating.  To stop this oscillation, run the current slider to zero then re-adjust to the desired current at a slower non-abrupt rate.
 b.	Tune beam and send it around the properly configured Analyzing Magnet.
@@ Line 75: / Line 75: @@
 **5.	Dipole Magnet Setup Instructions**
- a. Confirm that the Heinzinger power supplies are powered on in the Small Target Room with the following LED's illuminated:  Red "ON", and Green "Remote".  If Off, Press the "Local/Remote" button to "Local"; then "Stby" then "On"; then "Local/Remote" to "Remote".
+ a. Confirm that the Heinzinger power supplies are powered ON in the Small Target Room with the following LED's illuminated:  Red "ON", and Green "Remote".  If Off, Press the "Local/Remote" button to "Local"; then "Stby" then "On"; then "Local/Remote" to "Remote".
  b. If not already visible on the control room computer screen, start the appropriate software GUI's using the "Restart" button for "analyzer, switcher, swinger, or tweaker" magnets.
- c. In the "Switcher_hz422" and "Analyzer_hz422" GUI windows, magnet beam deflection (left/right) is indicated on the "Magnet Current" line indicated as beam "left or right".  The "Swinger_hz422" and "Tweaker" has no polarity reversal button.
+ c. In the "Switcher_hz422" and "Analyzer_hz422" GUI windows, magnet beam deflection (left/right) is indicated on the "Magnet Current" line indicated as beam "left or right". The polarity can be toggled using the "Polarity" button located to the right of the "Lock" button.  When the "Polarity" button is pressed, the magnet current will automatically be set to zero and the polarity will reverse when the new magnet current is set.  The "Swinger_hz422" and "Tweaker" have no polarity reversal button.
- d. The polarity can be toggled using the "Polarity" button located to the right of the "Lock" button.  When the "Polarity" button is pressed, the magnet current will automatically be set to zero and the polarity will reverse.
+ d. Run the slider to the desired current.
- e. Run the slider to the desired current.