# For temperatures up to 300K (27 C) use the cryojet in standard RT mode, # but with cold flow down to 8 l/min from typical 10 l/min # First, you'll want to move the cryojet stage out/back: >>> cryojet.com move out # Make sure it is on: >>> cryojet.com on # Reduce cold flow from 10 to 8: >>> cryojet.com flow 8 # Set the Temperature: You can use capital "C" or "K", e.g. >>> cryojet.com 27C ### For Temperature above 27 deg. C use the nozzle heater: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ #### The Nozzle Heater #### The Nozzle Heater #### The Nozzle Heater ##### # Make sure cryojet is no longer Heating the cold flow! cryojet.com on (turns it's internal heater OFF) >>> cryojet.com on # MAX OUT the "Shield" or warm flow to 10: >>> cryojet.com shield 10 # TURN OFF THE COLD FLOW >>> cryojet.com flow 0 # Ideally we would like to have the temperature controller getting feedback from the sample temperature, # but of course the sample temperature is not being being measured while you are collecing diffraction data. # The heater gets feedback from a Thermo-Couple under the heating coils wrapped around the nozzle. # The set point of the nozzle heater varies from around 1 to 7 degrees above the desired gonio/sample temperature. # Here are some typical numbers for the # Set Points, the Heater Temperature, and measured temp. at sample pos. on the goniomeer: # SP: 30.0 Heater: 30.0 Gonio: 29.3 # SP: 35.0 Heater: 35.0 Gonio: 33.3 # SP: 40.0 Heater: 40.0 Gonio: 37.3 # SP: 45.0 Heater: 45.0 Gonio: 41.3 # SP: 50.0 Heater: 50.0 Gonio: 45.3 # SP: 55.0 Heater: 55.0 Gonio: 49.3 # SP: 60.0 Heater: 60.0 Gonio: 53.4 ## The command to control the nozzle temperature is "nozzle_temperature.com" # No arguments on the command line: >>> nozzle_temperature.com Setpoint: +31.5 Nozzle_Temp: +31.5 Desired_Sample_Temp: 30.0 # Get Help with arguments >>> nozzle_temperature.com help a # You will probably NOT want to use the following: # To change the set point add "sp", and the desired temperature, e.g. >>> nozzle_temperature.com sp 40 SetPoint is currently +31.5 New Set Point will be 40 W400 # ( the W400 is what comes back from the controller, I can't get rid of it) # you will probably NOT want to use the "sp" argument unless you'd already "found" the one needed # for what ever sample temperature was desired. # To just FIND or to actually SET the NOZZLE Temperature for a Desired Sample/Gonio Temperature # Do this, for example: # to obtain a 40 deg Sample Temperature use "find" or "set": >>> nozzle_temperature.com find 40 # will tell you the required set point but NOT set it. >>> nozzle_temperature.com set 40 # will actually set the "set setpoint" # with output something like this: CurrentSetpoint: +31.5 Desired Sample Temp: 40 Nozzle Temp: +40 New Set Point will be 43.7 #When you are all done turn the heater off like this: >>> nozzle_temperature.com sp 20 >>> cryojet.com on >>> cryojet.com move in # Remember that you'll need to start cooling down the cyrojet at least ~30 minutes before your shift is done for the users after you. # # HOW TO CHECK THE ACTUAL TEMPERATURE AT THE SAMPLE/BEAM POSITION 1) CAREFULLY Mount the ThermoCouple Pin being mindful of having it's wire NEVER come in contact with the Beamstop Syrofoam support OR The Hi-Mag Prism/Mirror! 2) To make sure the wire NEVER touches the beamstop foam or Hi-Mag Prism !) Never go to High Mag view !!) When centering the TC Tip an Mid-Mag view !!!) Tap the tip in the touch screen !!!!) Rotate +90 Degress, Tap again !!!!!) Rotate -90 Degress !!!!!!) ONLY +90 Then -90, +90 Then -90, NO 180, etc. 2) The temperature of the TC Pin, the Nozzle, and the Set Point are logged every 10 seconds here: /data/log/nozzle_temperature.log 3) to veiw the output you can, e.g. get the last 12 readings of the file "tail" and continue viewing ("follow") the output like this: >> tail -12f /data/log/nozzle_temperature.log Tue Aug 13 11:12:27 PDT 2019 SP: 20.0 Heater: 23.0 Gonio: 25 Tue Aug 13 11:12:37 PDT 2019 SP: 20.0 Heater: 23.0 Gonio: 25 Tue Aug 13 11:12:47 PDT 2019 SP: 20.0 Heater: 23.0 Gonio: 24.6 ...