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How my experiment failed 

Everything good, time to measure the spectrum at room temperature!

Except that with the additional losses from going through the vacuum chamber, my signal-to-noise ratio was lower, and my magnon frequency was lost in the noise.

:oh_no:

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How my experiment failed 

Temperature monitor is easy, I have one, but I don't have the computer on which I have a python script to record what the temperature was at a certain time (my very first python script from before learning python). Found it, but then python is broken on it, and then matplotlib doesn't want to let itself be installed, and then somehow the script crashes.
Buuut I repair it by just removing the plot parts.

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How my experiment failed 

I noticed I was missing the temperature monitor, which is somewhat important when I want to measure something with respect to the temperature.

I'm doing without vacuum monitor though, it disappeared since last time :flan_shrug:

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How my experiment failed 

Thankfully the crystal didn't get lost in inaccessible parts of the chamber and it didn't break, I just glued it back and waited for the night.

Comes today! I think everything is ready and I go fetch liquid nitrogen in another building.

Spoiler: everything was not ready.

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How my experiment failed 

It took a few hours to find a position and height about correct for the chamber, I had a lot of signal coming through, and then I realized: too much signal.

Well with all this turning upside-down and up and down and up and down and shaking, the crystal glued inside had fallen :oh_no:

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How my experiment failed 

And each time I move the (maybe 5kg) chamber in and out (within the limits of how far away the vacuum pipes let me move, and they kept making knots somehow), I was bumping into the optics inside the spectrometers and misaligning everything.

The lenses inside where supposed to be screwed tight but they were coming loose :oh_no:

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How my experiment failed 

The setup is in a box, with a small hole and a lid above where the sample goes, and if I stick the chamber in the hole, then I can't put my hands inside to attach the feet or change the height :oh_no:

Of course there is no reference or anything, not for the position of the chamber, not for the height of the feet.

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How my experiment failed 

First problem, nobody used the spectrometer with the cryo chamber since a year, and I think I even told someone it was ok to move away the supports in which the chamber can be attached in the setup.
:oh_no:

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How my experiment failed 

It happens that my spectrometer has also a cryogenic chamber, so I'm thinking that if it's a phonon, it should evolve in some recognizable way with the temperature.

Still waiting from a confirmation from my professor about if that's a good idea, but that's only two days, he probably didn't read my email yet.

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How my experiment failed 

So my problem is: I am measuring the absorption spectrum of some material, and I have an unidentified peak which where there should be none according to 60-years-old litterature.
But they also say that sometimes some forbidden modes become allowed under certains conditions that I didn't understand, because uh, symmetry and stuff.

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I give up on science for tonight so let me tell you how much every single step can fail in experiments sometimes.

hey my friends european (french?) #artists, can you tell me if these indian ink brands are good?:

- Lefranc & Bourgeois
- PΓ©bΓ©o

I admit, this mainly works because my experiments failed so many times that it was too boring to just copy-paste the code to read/analyze/plot the data in only slightly different ways.

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Also it's super satisfying to check on my measurements!

Because I have set up my computer so I can type "grab ProjectName/date" to download today's data. And I made my analysis functions into a python package so I can literally just import one function and give it a date (optionally which plots I want or not) and I get the right plots to paste into the lab notebook. Even with automatically detecting which computer I'm on and choosing the right path to the files! ✨

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8pm update: about halfway though the measurements and it didn't saturate :muscle_hmn_r2:

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I asked our group secretary how to get a professor's attention, and she reminded me that: phones exist.
True! That's a thing.

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Starting to wonder if it's acceptable to leave a note on a professor's office door saying "I'm trying to organize a meeting with you, please stop ignoring my emails".

I sound like I'm complaining but I think I'm actually enjoying that. Doings measurements is good! :atom: :sparkles_light:~~~ :win_computer:

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