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. |
Chiller installation + interlock, posted by Ronic Chiche at ThomX igloo about mechanics 
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- this morning the chiller leakage has been fixed by adding some Teflon on the faulty Swagelock adapter.
a long leakage test has to be done to be sure there is no leakage at all => can be done on Friday during our tests.
- here is a picture of the 2 Alphanov amplifier controller interlocks. |
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Chiller installation + interlock, posted by Ronic Chiche at ThomX igloo about mechanics
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This morning, I started the chiller and opened the valves on the external water circuit => no water leakage during the morning.
now, the chiller will stay ON all the time => we will check the installation at the end of the afternoon.
Ronic |
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Scope and Desktop computer removing, posted by Ronic Chiche at ThomX igloo about detectors and electronics | software
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this afternoon, because of the test on the electron beam drive in the ring in the next days,
I removed the scope and the desktop computer (but not the display) installed close to the ThomX optical cavity.
they have been stored in the "Viktor" ThomX optical room. |
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Safety patrol instructions, posted by Ronic Chiche at ThomX igloo about utilities
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If one needs to work with 3rd stage on the laser amplifier, one needs to make the safety patrol inspection before closing the bunker.
for that, it is mandatory to switch 2 keys on the "key board" in the control room, just before or just after the safety patrol :
- the THOMX key to 1 |
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Safety patrol instructions, posted by Ronic Chiche at ThomX igloo about utilities
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after finishing the controlled intervention, you just have to exit the bunker with the 2 keys and place them back in their location
then the controlled access (colored yellow) will turn to "access interdit" (red colored)
to terminate the closure of the bunker, you just have to turn the two key indicated in the previous image back to their original position. |
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Airflow power breakdown, posted by Ronic Chiche at ThomX igloo about utilities
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since around 2 weeks, the airflow above the optical table housing has a power breakdown when one tries to switch it on.
the power breaker is in the electrical bay, on the left of the south entrance of ThomX.
the name of the power breaker switch related to the airflow is "TABLEAU ANNEAU 4". |
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UPS installation and commissioning, posted by Ronic Chiche at ThomX igloo about cabling
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Jean-Noel Cayla installed several days ago a Eaton 9PX 11kVA UPS inside the Igloo, outside of the ThomX bunker
and I asked him to place only 1 UPS plug on the wall close to the FP-cavity to supply only the NKT/OneFive oscillator and the Smaract laser cavity
motors. |
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UPS installation and commissioning, posted by Ronic Chiche at ThomX igloo about cabling
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finally I installed the OneFive laser, the Smaract motors of the laser and the Arduino Peltier controller of the laser on the UPS plug.
the power "seen" by the UPS is 0W, perharps because the used power is below 100W.
the UPS says it can last 385mn (> 6h) in case of power shut down. |
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UPS installation and commissioning, posted by Ronic Chiche at ThomX igloo about cabling
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I was able to lock back the FP-cavity.
at one moment, during the alignment optmization process of the infection mirrors of the FP-cavity, I had a huge misalignment moving Ma-Y motor.
I had to realign a lot this motor to get back to the standard power inside the FP-cavity. |
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Vacuum in the mirror chambers, posted by Manar Amer at ThomX igloo about vacuum | cabling | software
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The electron ring has been vacuum inside it, but the valves connecting it to the two mirror chambers are closed. Before commencing to do measurements
on the cavity, we must place the mirrors under the proper vacuum and open the valves connecting them to the electron ring.
The vacuum system is consistent of three levels; Normal (max ~10^-3 mbar), turbo (max ~ 10^-7 mbar) and ionization.
With |
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Vacuum in the mirror chambers, posted by Manar Amer at ThomX igloo about vacuum | cabling | software
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the ionic pumps have been also connected this morning but not powered on, yet.
the vacuum group is waiting for a vacuum level below 10**-6 to power them on.
it should be the case this afternoon. |
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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 |
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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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