Difference: Vacuum (1 vs. 10)

Revision 102008-07-25 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Revision 92008-06-05 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Line: 25 to 25
 
vac_interlock_overrule.bmp
Changed:
<
<
  • 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.
>
>
  • 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

Changed:
<
<
  • 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).
>
>

  • 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

Revision 82008-06-05 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Line: 15 to 15
 
  • If -4.8 < DP < -4.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions on platform C3.
  • The actual value of DP can also be read off the Vacuum main page on the PLC-screen in rack C3B05.
Changed:
<
<

vac_main.bmp
>
>

vac_main.bmp
 
  • bypass the vacuum interlock that prevents moving the detectors. So push the following marked buttons on the PLC screen. If you happen to be on a different page first press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.
Changed:
<
<

vac_interlock.bmp
>
>

vac_interlock.bmp
 
Changed:
<
<

vac_interlockstatus.bmp
>
>

vac_interlockstatus.bmp
 
Changed:
<
<

vac_interlock_overrule.bmp
>
>

vac_interlock_overrule.bmp
 
Added:
>
>
  • 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.
  • now the 4 lights that are encircled in the following figure should be green, indicating that you can move the VELO-detectors.
Changed:
<
<

motion_2.bmp
>
>

motion_2.bmp
 
Changed:
<
<
  • 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).
>
>
  • 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).
 
Changed:
<
<

motion_1.bmp
>
>

motion_1.bmp
 
  • When DP has reached a value between -4.8 and -4.0 mbar this part of your mission has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".

Revision 72008-05-06 - MartinVanBeuzekom

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Line: 13 to 13
 Create good starting conditions:

  • If -4.8 < DP < -4.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions on platform C3.
Changed:
<
<
  • The actual value of DP can also be read off the Vacuum main page on the PLC-screen in rack C3B05.

ss1.jpg
>
>
  • The actual value of DP can also be read off the Vacuum main page on the PLC-screen in rack C3B05.


vac_main.bmp

 
  • bypass the vacuum interlock that prevents moving the detectors. So push the following marked buttons on the PLC screen. If you happen to be on a different page first press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.
Changed:
<
<

screenshot.4.jpg
ss6.jpg
screenshot.5.jpg
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
>
>

vac_interlock.bmp


vac_interlockstatus.bmp


vac_interlock_overrule.bmp

  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
 
  • now the 4 lights that are encircled in the following figure should be green, indicating that you can move the VELO-detectors.
Changed:
<
<

screenshot.3.jpg
  • 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).

ss2.jpg
  • When DP has reached a value between -4.8 and -4.0 mbar this part of your mission has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
>
>

motion_2.bmp

  • 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).


motion_1.bmp

  • When DP has reached a value between -4.8 and -4.0 mbar this part of your mission has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
 
  • From the neon point of view you can now start the warm cooling of the VELO with a setpoint of +10 deg. C.
Line: 35 to 46
 

Changed:
<
<
META FILEATTACHMENT attachment="screenshot.4.jpg" attr="" comment="vacuummainpage" date="1208359618" name="screenshot.4.jpg" path="screenshot.4.jpg" size="74372" stream="screenshot.4.jpg" user="Main.EddyJans" version="1"
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>
>
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META FILEATTACHMENT attachment="vac_interlock.bmp" attr="" comment="" date="1210025153" name="vac_interlock.bmp" path="C:\users\martinb\VELO\Cooling\for_eddy\vac_interlock.bmp" size="2356270" stream="C:\users\martinb\VELO\Cooling\for_eddy\vac_interlock.bmp" user="Main.MartinVanBeuzekom" version="1"
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Revision 62008-04-30 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Changed:
<
<
  • In the following DP refers to the differential pressure between beam and detector volume: DP = p_beam - p_det.
  • When cooling down from room temperature to +10 deg. C with the baseplate heating "ON", DP will increase with approximately 3 mbar.
>
>
  • In the following DP or DP411 refers to the differential pressure between beam and detector volume: DP = p_beam - p_det.
  • When cooling down from room temperature to +10 deg. C with the baseplate heating "ON", DP will increase with approximately 4 mbar.
 
  • In the following the neon Gas Injection System is supposed to be non-active.
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated by means of a special procedure which carries the danger of blowing off all the CO2 that is inside the cooling system of the VELO !!
  • Make sure the PVSS-project "VEDCS_VacMot" is running under "velo_user" on "vedcs02w". If not, start it and also start via "Vision" the panel G:\velo\pvss\VELO_VacuumMotion\panels\VeloVacuum_UI_Main.pnl
Added:
>
>
  • Click on "Show Details" (left top) to get the reading of DP411 displayed.
  • Activate continuous displaying of DP as a function of time by clicking "Open Graph Select" (left top), followed by open of "VEDCS_VacMot", open of "Vac_Various", select of "AP_DP", right-click, select "view" and left-click.
  Create good starting conditions:
Changed:
<
<
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions.
>
>
  • If -4.8 < DP < -4.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions on platform C3.
  • The actual value of DP can also be read off the Vacuum main page on the PLC-screen in rack C3B05.

ss1.jpg
 
  • bypass the vacuum interlock that prevents moving the detectors. So push the following marked buttons on the PLC screen. If you happen to be on a different page first press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.

screenshot.4.jpg
Changed:
<
<

screenshot.6.jpg
>
>

ss6.jpg
 
screenshot.5.jpg
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
  • now the 4 lights that are encircled in the following figure should be green, indicating that you can move the VELO-detectors.
    screenshot.3.jpg
Changed:
<
<
  • 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 1 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 ??).

screenshot.2.jpg
  • When DP has reached a value between -3.0 and -2.0 mbar this part of your mision has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
>
>
  • 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).

ss2.jpg
  • When DP has reached a value between -4.8 and -4.0 mbar this part of your mission has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
 
  • From the neon point of view you can now start the warm cooling of the VELO with a setpoint of +10 deg. C.
Line: 35 to 40
 
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Added:
>
>
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Revision 52008-04-23 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Line: 6 to 6
 
  • When cooling down from room temperature to +10 deg. C with the baseplate heating "ON", DP will increase with approximately 3 mbar.
  • In the following the neon Gas Injection System is supposed to be non-active.
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated by means of a special procedure which carries the danger of blowing off all the CO2 that is inside the cooling system of the VELO !!
Changed:
<
<
  • Make sure the PVSS-project "VEDCS_VacMot" is running under "velo_user" on "vedcs02w". If not, start it and start via "Vision" the panel G:\velo\pvss\VELO_VacuumMotion\panels\VeloVacuum_UI_Main.pnl
>
>
  • Make sure the PVSS-project "VEDCS_VacMot" is running under "velo_user" on "vedcs02w". If not, start it and also start via "Vision" the panel G:\velo\pvss\VELO_VacuumMotion\panels\VeloVacuum_UI_Main.pnl
 
Changed:
<
<
Create good starting conditions:
>
>
Create good starting conditions:
 
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions.
  • bypass the vacuum interlock that prevents moving the detectors. So push the following marked buttons on the PLC screen. If you happen to be on a different page first press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.

screenshot.4.jpg
Changed:
<
<

  • screenshot.5.jpg
>
>

screenshot.6.jpg
screenshot.5.jpg
 
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
Changed:
<
<
  • now the 4 lights that are encircled should be green, indicating you can move the VELO-detectors.
>
>
  • now the 4 lights that are encircled in the following figure should be green, indicating that you can move the VELO-detectors.
 
screenshot.3.jpg
Changed:
<
<
  • go to the "motion control" screen. 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 1 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 ??).
>
>
  • 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 1 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 ??).
 
screenshot.2.jpg
Changed:
<
<
  • When DP has reached a value between -4.5 and -2.0 mbar this part of your mision has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
>
>
  • When DP has reached a value between -3.0 and -2.0 mbar this part of your mision has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
 
Changed:
<
<
  • From the neon point of view you can now start the warm cooling of the VELO with a setpoint of +10 deg. C..
>
>
  • From the neon point of view you can now start the warm cooling of the VELO with a setpoint of +10 deg. C.
 
Changed:
<
<
-- EddyJans - 16 Apr 2008
>
>
-- EddyJans - 23 Apr 2008
 
Line: 32 to 33
 
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<
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>
>
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Revision 42008-04-21 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

  • In the following DP refers to the differential pressure between beam and detector volume: DP = p_beam - p_det.
Changed:
<
<
  • When cooling down from room temperature to +10 deg. C with the baseplat hating "ON", DP will increase by approximately 3 mbar.
>
>
  • When cooling down from room temperature to +10 deg. C with the baseplate heating "ON", DP will increase with approximately 3 mbar.
 
  • In the following the neon Gas Injection System is supposed to be non-active.
Changed:
<
<
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated via a special procedure. This might generate the blowing off of all the CO2 that is inside the cooling system of the VELO !!
>
>
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated by means of a special procedure which carries the danger of blowing off all the CO2 that is inside the cooling system of the VELO !!
 
  • Make sure the PVSS-project "VEDCS_VacMot" is running under "velo_user" on "vedcs02w". If not, start it and start via "Vision" the panel G:\velo\pvss\VELO_VacuumMotion\panels\VeloVacuum_UI_Main.pnl

Create good starting conditions:

Changed:
<
<
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with the paragraph "Operating the vacuum PLC for cooling activities ....". If not, you first have to create a good starting condition, i.e. a good value of DP. This can be done by moving the detector halves. So perform the following actions.
  • bypass the vacuum interlock that prevents moving the detectors. Push the following marked buttons on the PLC screen. If you are on a different page press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.

  • screenshot.4.jpg
>
>
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with "Cooling operating under neon". If not, you first have to create a good starting condition, i.e. a good differential pressure. This can be done by moving the detector halves. To do so you have to perform the following actions.
  • bypass the vacuum interlock that prevents moving the detectors. So push the following marked buttons on the PLC screen. If you happen to be on a different page first press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.

screenshot.4.jpg
 

  • screenshot.5.jpg
Added:
>
>
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
 
  • now the 4 lights that are encircled should be green, indicating you can move the VELO-detectors.
    screenshot.3.jpg
Changed:
<
<
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
  • go to the "motion control" screen. 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 1 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 pressure is 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 ??).

  • screenshot.2.jpg
  • When DP has reached a value between -4.5 and -2.0 mbar: press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass (in other words reactivate) on "inhibit to motion".
>
>
  • go to the "motion control" screen. 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 1 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 ??).

screenshot.2.jpg
  • When DP has reached a value between -4.5 and -2.0 mbar this part of your mision has been completed successfully. Now press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass on (in other words reactivate) "inhibit to motion".
 
Changed:
<
<
  • Now you can from the neon point of view start the warm cooling.
>
>
  • From the neon point of view you can now start the warm cooling of the VELO with a setpoint of +10 deg. C..
 

-- EddyJans - 16 Apr 2008

Revision 32008-04-17 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

Line: 10 to 10
  Create good starting conditions:
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with the paragraph "Operating the vacuum PLC for cooling activities ....". If not, you first have to create a good starting condition, i.e. a good value of DP. This can be done by moving the detector halves. So perform the following actions.
Changed:
<
<
  • bypass the vacuum interlock that prevents moving the detectors. Push the following marked buttons:
>
>
  • bypass the vacuum interlock that prevents moving the detectors. Push the following marked buttons on the PLC screen. If you are on a different page press the "Home"-button (bottom-left) or "Vacuum control"-button to get there.
  *
screenshot.4.jpg

  • screenshot.5.jpg
Added:
>
>
  • now the 4 lights that are encircled should be green, indicating you can move the VELO-detectors.
    screenshot.3.jpg
 
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.
Added:
>
>
  • go to the "motion control" screen. 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 1 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 pressure is 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 ??).

  • screenshot.2.jpg
  • When DP has reached a value between -4.5 and -2.0 mbar: press the red mushroom button on the motion system in motion rack C3B03 (to inhibit movement of the detectors) and remove the bypass (in other words reactivate) on "inhibit to motion".
 
Changed:
<
<
Operating the vacuum PLC for cooling activities and powering of VELO-modules while being under a neon atmosphere.
  • If -4.5 < DP < -2.5 mbar, you are lucky and can continue with the next paragraph.
>
>
  • Now you can from the neon point of view start the warm cooling.
 

-- EddyJans - 16 Apr 2008

Line: 26 to 29
 

Deleted:
<
<
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Added:
>
>
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Revision 22008-04-17 - EddyJans

Line: 1 to 1
 
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

  • In the following DP refers to the differential pressure between beam and detector volume: DP = p_beam - p_det.
Changed:
<
<
  • When cooling down from room temperature to +10 deg. C, DP will increase by approximately 3 mbar.
>
>
  • When cooling down from room temperature to +10 deg. C with the baseplat hating "ON", DP will increase by approximately 3 mbar.
 
  • In the following the neon Gas Injection System is supposed to be non-active.
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated via a special procedure. This might generate the blowing off of all the CO2 that is inside the cooling system of the VELO !!
Changed:
<
<
  • Make sure the PVSS-project "VELO_vac_mot" is running under "velo_user" on "vedcso2w". If not, start it and run panel G:\???\???\???
>
>
  • Make sure the PVSS-project "VEDCS_VacMot" is running under "velo_user" on "vedcs02w". If not, start it and start via "Vision" the panel G:\velo\pvss\VELO_VacuumMotion\panels\VeloVacuum_UI_Main.pnl
  Create good starting conditions:
Changed:
<
<
  • If -4.5 < DP < -2.5 mbar, you are lucky and can continue with the paragraph ="Operating the vacuum PLC for cooling activities ....". If not, you first have to create a good starting condition, i.e. a good value of DP. This can be done by moving the detector halves. So perform the following actions.
>
>
  • If -4.5 < DP < -2.0 mbar, you are lucky and can continue with the paragraph "Operating the vacuum PLC for cooling activities ....". If not, you first have to create a good starting condition, i.e. a good value of DP. This can be done by moving the detector halves. So perform the following actions.
 
  • bypass the vacuum interlock that prevents moving the detectors. Push the following marked buttons: *
    screenshot.4.jpg

  • screenshot.5.jpg
Line: 20 to 20
 
  • If -4.5 < DP < -2.5 mbar, you are lucky and can continue with the next paragraph.
Deleted:
<
<
De rest is een tijdelijke demo voor mijzelf (=E.J.) The high voltage for the silicon sensors is supplied by a 16-channel module from Iseg located in an Iseg crate in the hall. It is connected via an USB-CAN interface (small white box with a single red LED) at the PC named LBTBXP02. The control program can be started in 2 ways: either by clicking on isegCANHVControl on the desktop of LBTBXP02, or by All Programs << isegHVwithCAN << isegCANHVControl.

Operating the isegCANHVControl:

  • Note that the software treats the 16-channel power supply as two 8-channel modules - the are shown as EHS 02 and EHS 03 on the main panel. If you don't see them, move the mouse cursor into that panel and they should become visible.

 -- EddyJans - 16 Apr 2008

Revision 12008-04-16 - EddyJans

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="VELOOperatingManuals"

Operating the VELO Vacuum System while being under a neon atmosphere

  • In the following DP refers to the differential pressure between beam and detector volume: DP = p_beam - p_det.
  • When cooling down from room temperature to +10 deg. C, DP will increase by approximately 3 mbar.
  • In the following the neon Gas Injection System is supposed to be non-active.
  • In the following a correct reading of the baratron DP is assumed. If not, consult an expert because it then has to be calibrated via a special procedure. This might generate the blowing off of all the CO2 that is inside the cooling system of the VELO !!
  • Make sure the PVSS-project "VELO_vac_mot" is running under "velo_user" on "vedcso2w". If not, start it and run panel G:\???\???\???

Create good starting conditions:

  • If -4.5 < DP < -2.5 mbar, you are lucky and can continue with the paragraph ="Operating the vacuum PLC for cooling activities ....". If not, you first have to create a good starting condition, i.e. a good value of DP. This can be done by moving the detector halves. So perform the following actions.
  • bypass the vacuum interlock that prevents moving the detectors. Push the following marked buttons: *
    screenshot.4.jpg

  • screenshot.5.jpg
  • Pull out the red mushroom button on the motion system in motion rack C3B03 at 1m20 from the floor.

Operating the vacuum PLC for cooling activities and powering of VELO-modules while being under a neon atmosphere.

  • If -4.5 < DP < -2.5 mbar, you are lucky and can continue with the next paragraph.

De rest is een tijdelijke demo voor mijzelf (=E.J.) The high voltage for the silicon sensors is supplied by a 16-channel module from Iseg located in an Iseg crate in the hall. It is connected via an USB-CAN interface (small white box with a single red LED) at the PC named LBTBXP02. The control program can be started in 2 ways: either by clicking on isegCANHVControl on the desktop of LBTBXP02, or by All Programs << isegHVwithCAN << isegCANHVControl.

Operating the isegCANHVControl:

  • Note that the software treats the 16-channel power supply as two 8-channel modules - the are shown as EHS 02 and EHS 03 on the main panel. If you don't see them, move the mouse cursor into that panel and they should become visible.

-- EddyJans - 16 Apr 2008

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