Motors Controler and Software, posted by Manar Amer at ThomX igloo about cabling | software 
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When connecting the Ethernet cable from the hub to the computer, it must be connected to the correct one (shown in green
arrow in photo), it is not the usual internet
the Motor controllers are under the Cavity table.
The last image
shows the positions of each mirror (To be checked if they are actual readings)
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Vacuum pressure to open valves, posted by Manar Amer at ThomX igloo about vacuum
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| The pressure for the mirror vacuum chambers needs to be ~ few 10^-9 mbar for the valves to be open to the electron ring (the rest of the vacuumed ThomX) |
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Pressure On mirror Chambers, posted by Manar Amer at ThomX igloo about vacuum
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At 10h45 in the morning, the pressure on the mirror chambers is:
on the left |
Vacuum pressure to open valves, posted by Manar Amer at ThomX igloo about vacuum
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Reminding: the opening of the valves is the responsibility of the vacuum group only.
Manar
Amer wrote:
The pressure for the mirror vacuum chambers needs to be ~ few 10^-9 |
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Pressure On mirror Chambers, posted by Manar Amer at ThomX igloo about vacuum
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At 15h30 in the afternoon, the pressure on the mirror chambers is:
on the left
: 2.0*10^-9 mbar
on the right (sortie X) : 1.4*10^-8 mbar
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Pressure On mirror Chambers, posted by Manar Amer at ThomX igloo about vacuum
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At 10h in the morning, the pressure on the mirror chambers is:
on the left
: 1.9*10^-9 mbar
on the right (sortie X) : 1.0*10^-8 mbar
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Pressure On mirror Chambers, posted by Manar Amer at ThomX igloo about vacuum
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At 9h30 in the morning, the pressure on the mirror chambers is:
on the left
: 1.6*10^-9 mbar
on the right (sortie X) : 6.5*10^-9 mbar
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Pressure On mirror Chambers Leckage Test, posted by Manar Amer at ThomX igloo about vacuum
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Leakage test done in the afternoon.
The method :
an atomic mass spectrometer is connected to the mirror chamber and a measurement is taken to see all the atoms and molecules in the chamber
after |
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Pressure On mirror Chambers Plot, posted by Manar Amer at ThomX igloo about vacuum
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A plot showing the descend of the vacuum in the mirror chambers (data to plot it obtained yesterday evening)
The regions where there is a drastic decrease is when the ionic pump was turned on.
Today in the morning the pressure was |
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Pressure On mirror Chambers Plot, posted by Manar Amer at ThomX igloo about vacuum
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During the weekend 23-24th of October, the lab and ThomX suffered a power breakdown.
All the pumping systems had to restart.
as a consequence, the pressure on Monday 25th morning was 4.3e-9 and 4.6e-9 mbar in the left and right vessels. |
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Pressure On mirror Chambers Plot, posted by Manar Amer at ThomX igloo about vacuum
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Pressure is 1.4e-9 and 2.6e-9 mbar this morning.
Manar
Amer wrote:
During the weekend 23-24th of October, the lab and ThomX suffered a |
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Opening of the FP cavity valves, posted by Ronic Chiche at ThomX igloo about vacuum
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as the vacuum level was good enough, I asked Eric Mistretta to open the 2 valves of the FP cavity.
He said the vacuum group made several tests during the last days, opening and closing these valves!
I asked him to not open and close them as it could release some dust on the mirrors. |
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Opening of the FP cavity valves, posted by Ronic Chiche at ThomX igloo about vacuum
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On Friday the 5th of November, ThomX suffered again from a power breakdown.
all the pumping systems had to be restarted.
this produced a vacuum level increase and the FP-cavity valves shut off for security reasons. |
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Iris Mounts on Cavity Windows, posted by Manar Amer at ThomX igloo about utilities
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In order to find the Alignment of the ThomX cavity, Yann built mounts that could be placed directly on the windows outside the cavity, where we can place
an iris at the center.
The center of the iris on the mount corresponds to the center of the mirror. |
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Iris Mounts on Cavity Windows, posted by Manar Amer at ThomX igloo about utilities
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The new iris mounts fixed on the small cavity windows.
Need additional 2 irises.
Manar |
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One Five laser moved , posted by Manar Amer at ThomX igloo about lasers and optics
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The One Five laser and its controller have been moved from PLIC to ThomX Iglo.
In preparation to Install the Amplifier from Alphanov |
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new power supplies connexions, posted by Ronic Chiche at ThomX igloo about cabling
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this afternoon with Viktor, we redid all the power supplies connexions.
4x cables are now connected to the wall sockets.
- 1x extension cable for the mini-rack multi-sockets cable. |
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Power supplies switched off, posted by Ronic Chiche at ThomX igloo about cabling
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This afternoon, an electrical operation will be done in ThomX, impacting possibly the casemate power supplies.
Then we shut down all the equipment. |
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shutter base plate, L-shape arm and housing frame, posted by Ronic Chiche at ThomX igloo about mechanics | lasers and optics
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This afternoon with Yann:
- we changed the shutter base plate position to center the beam axis with the mirrors center => to be checked with the amplifier beam
- on the L-shaped arm, the axis along the cavity beam has been centered. it should be never moved !!! (it corresponds to the less accessible knob). |
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Chiller installation + interlock, posted by Ronic Chiche at ThomX igloo about mechanics
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- this morning with Aurélien, we filled the water tank of the chiller and we opened the water valves (last pipes on water arrival/departure panel).
there is no leakage on the external water circuit but there is a small one on one of the Swagelock adapters of the water circuit connected to
the Alphanov Amplifier. |