Page History

Inside the hutch:

• Switch to the new reference foil or compound.  Reference foils are in the small wooden box of foils at the beam line. 
  • Low-energy configuration (E < 5 keV, using low-Z box with bellows or cryostream bag)
    • Move CALVERT to out position (CALVERT = 4).
    • Open feedthrough for motorized vertical CALVERT holder by loosening and removing C-clamp. 
    • Pull feedthrough out completely.
    • Remove sample holder plate for old reference foil or compound and press new reference onto double stick tape on mount.  Align holes on plate to holes on mount.
    • Re-insert CALVERT holder and replace and tighten C-clamp. 
    • Attach I2 cable to BNC connector below motorized vertical CALVERT holder.
  • High energy configuration (E > 4.9 keV, not using low-Z box with bellows or cryostream bag)
    • For samples which will transmit beam through them, place foil in holder in front of I2 ion chamber.  Attach I2 signal cable to I2 ion chamber.
    • For thick or non-transmitting samples, insert foil in the scatter holder before I0.   Attach I2 signal cable to photodiode cable on scatter holder.
  If not using a FOILVERT reference foil, switch to the new reference foil (usually placed in holder in front of I2 ion chamber, sometimes placed in a scatter holder before I0. Both will show signal on the I2 display if signal cable attached correctly.)
• Make sure there are no samples or holders blocking the beam path through to I2. If using the scatter reference: you can calibrate without opening the sample shutter, which would enable samples to stay in place without risk of beam exposure with some specific adjustments (close shutter and take off computer control, but remember to put shutter back on computer control afterwards).

Turn the beam back on (Search the hutch). (If remote, you will need to ask staff to do this for you)

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