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FELICE FTICR

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System description

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Enter some description here, maybe including technical specs

"original in '???'"

Reactive ion trap pressures

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Baratron pressures versus Cold Cathode gauge pressures (Edwards pressure gauge was used for this measurement. Measurement done by Bastiaan Poetsma on March 21, 2025.

Graph showing the relation between the RIT chambre pressure as measured from the Edwards gauge to the RIT pressure measured by the mks Baratron

Superconducting magnet

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Requires 50L of liquid helium roughly every 4 weeks

  • 65cm is the nominal level at which it should be refilled
  • 60cm is the lowest reasonable level
  • 54cm is the critical level after which a quench may occur

"what?"

Building the AWG3 program for the FELICE FTICR

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Measurement procedure

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Pulse sequence

  1. Start GOODAWG3.exe
  2. Open a pulse sequence (C:\felice\awg3-files)
  3. …
  4. In sequence, check start mode: external start

Export ASCII MS

  1. Measure a MS in AWG
  2. Press open in AWE (Brown MS + red arrow)
  3. Right-click maximize AWE (stupid software bug)
  4. Convert to magnitude spectrum (pink MS button)
  5. File --> Export --> MS as txt (magnitude intensity, spec 30-500)
  6. Save

Generate SWIFT pulse

  1. Make MS
  2. Open to AWE
  3. Magenta MS check
  4. Click on box to show the excitation (left of time transient)
  5. Form a NARROW triangle of boxes over the mass to be ejected ( °F button).
    1. Make sure all other buttons are exactly zero.
    2. Require extra button? Right click on existing button.
  6. Action --> Create Excite pulse --> with SWIFT. Dialogue ok.
  7. File --> Save as (same directory blabla.awe)
  8. Select excite in AWG: Tab AWE --> select load blabla.awe
    1. Sometimes it doesn’t fit: Make the time sequence longer.
  9. Set attenuation (100% = OFF)

FELIX/FELICE scan

  1. Load FEL compatible sequence (incl FLC settings, undulator & live export)
  2. Start AWG scan patch (python program to process data)
  3. Configure FELICE settings (double click, enable FLX control)
  4. Configure FLC undulator (double click, fill in: 10000/(start-stepsize*('Felice Undulator:Run Count^'-1)) Start at high frequency. Program does NOT stop automatically.
  5. Sequence, enable external start (hooked up to D10 64 start trig)

Acquire spectrum via scan processor Open AWG scan patch van Victor Set display min & max to 30 & 1000 Enter gates (name, min, max) Set plot properties to mass spectrum Save configuration file Receive from AWG2 (not 3!) Start in AWG Max 30 sec before undulator should move again

End scan Stop sequence in AWG Stop scan processor

Parameters to write down when scanning FELICE

  1. Electron energy in MeV (comparison to other shifts, check whether FLC is working)
  2. Macropulse repetition rate
  3. Micropulse repetition rate
  4. Detuning (spectral width)

Scan

  1. System (parent & fragment)
  2. Which cell (cell 1 = IN focus, cell 4 = OUT of FLC focus)
  3. Number of shots (indication for required IR irradiation)
  4. Wavelength (which vibrations can be observed)
  5. Spectrometer (grating & zero ref channel)
  6. SWIFT (what is thrown out before IR irradiation)
  7. Accumulation time (how many ions are captured in the RLT)
  8. Number of averages (determines noise level)

Moving the spectrometer box

  1. Off & On Supply pyro array
  2. Flip manual switch
  3. 230V cable, 2x 9 pin cables, LAN cable to NI box, powermeter trig in, pyro
  4. Remains attached: power cables, flip mirror & power meter pulse in
  5. Cable scheme can be found next to patch panel
  6. Pyro (M118) to MF10 to pyro.
  7. Interrupt (M114) to MF7 to power meter trig.
  8. Always on (M115) to MF4 to AWG.

Power scan Scan: Make sure the flipmirror is down and enable the FELICE gun

Now: Press avg. But software needs to be Quitted/stopped.


Source signal checking FC2: 150° = IN and 240° = OUT. QMS as MS (only for continuous sources) Set external vs manual button to external, and Set RF only vs resolving button to resolving In Tempus, select quadrupole Close and re-open Tempus_DS. Quad is now scanning. Scope  Quad Profile Scan Turn on PMT (make sure no gas is present in RLT) In-/decrease signal intensity via PMT amplifier and tune file (multiplier & dynode)


Visual studio 8

install the trial versie van de image VS2008ProEdition90dayTrialENUX1435622.iso

te vinden in:

/vol/msd-data-clusters-1/software/fticr/AWG3/VisualStudio

use code: XMQ2Y-4T3V6-XJ48Y-D3K2V-6C4WT

(om later nog de trial te upgraden naar professional, zie https://stackoverflow.com/questions/453262/upgrading-visual-studio-2008-from-trial-to-full-on-windows-7-beta-build-7000/2433218

en gebruik

taskfree.zip

te vinden in dezelfde folder.

Python - a programming language that lets you work quickly and integrate systems more effectively.

infrared (light with energy that is too low to see)

Local Area Network - a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.

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