Difference: Vacuum (8 vs. 9)

Revision 92008-06-05 - EddyJans

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META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

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vac_interlock_overrule.bmp
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  • Go to screen of "MotionControl-3" and check that the PLC is not "hanging in a procedure". If so, one or more blocks on this page will be green and you have to push the button "Reset Procedures". Once all blocks are grey you can continue with the next step.
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
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  • go to the "motion control" screen as shown on the second figure of this documentation.
  • go to MotionControl-2
  • go to MotionControl-3. Check that the PLC is not "hanging in a procedure". If so, one or more rectangular small blocks on the left of this page will be green and you have to push the button "Reset Procedures". Once all blocks are grey you can continue with the next step.

  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor. Make sure the system doesn't start moving while doing so.
 
  • now the 4 lights that are encircled in the following figure should be green, indicating that you can move the VELO-detectors.


motion_2.bmp

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  • go to the "motion control" screen (see following figure). Beware of the fact that a higher value for both X-LEFT and X-RIGHT corresponds to more to the outside !! Move alternatingly the VELO-halves outwards in steps of 0.5 or 1.0 mm. Always keep a spacing of at least 1.0 mm between the boxes, i.e., |XL + XR| >= 1.0 mm. (At AP=850 mbar moving 1 mm outwards corresponds to an increase of DP of 0.6 mbar.) Wait after every step until the pressures, as represented by AP411 and DP411, are stabilized. To move a detector half, touch the corresponding setpoint, type a new value, type return, make sure you did the right thing, press the "MOVE HORIZONTALLY (X)" button and watch carefully what happens with: position, potmeter readings, DP411, PV301 ... 306 (which should stay closed, which means red).
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  • go to the main Motion Control screen. (see following figure). Beware of the fact that a higher value for both X-LEFT and X-RIGHT corresponds to more to the outside !! Move alternatingly the VELO-halves outwards in steps of 0.5 or 1.0 mm. Always keep a spacing of at least 1.0 mm between the boxes, i.e., |XL + XR| >= 1.0 mm. (At AP=850 mbar moving 1 mm outwards corresponds to an increase of DP of 0.6 mbar.) Wait after every step until the pressures, as represented by AP411 and DP411, are stabilized. To move a detector half, touch the corresponding setpoint, type a new value, type return, make sure you did the right thing, press the "MOVE HORIZONTALLY (X)" button and watch carefully what happens with: position, potmeter readings, DP411, PV301 ... 306 (which should stay closed, which means red).
 
motion_1.bmp
 
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