• Vacuum Vessel
• Standard cryostat and controller Lakeshore
• 1. Mount cryostat on goniometer
• 2. Insert sample
• 3. Set temperature
• Furnace
• Translations
• Eulerian cradle
• Problems?

In order to keep background to a minimum all RT experiments are normally performed in a vaccuum vessel.

You should let your local contact or an instrument responsible do this.

You should ask your local contact or an instrument responsible before first doing this.

You have three possibilities to set a temperature: The most direct is by using the controller itself. Or you use the temperature control program dti on the instrument control machine d20.ill.fr which is communicating with the controller. Or you work directly in the instrument control program MAD which, by itself, is communicating with the dti program.

Using the Lakeshore Controller

Using the temperature control interface DTI

This interface allows to control ILL temperature controllers. Information on the commands available with DTI can be obtained interactivaly with option H[elp]. The most relevant options for running an experiment

• dti se[t] t[emperature] send requested set point temperature to controller
• dti s[how] t[emperature] or dti display show current regulation temperature
• dti s[how] d[ynamic] or dti menu (VT100 terminal or xterm): continuous display of the current DTI monitor states and controller temperature. It is not recommended that this option is left running when not necessary
• dti on : Start temperature monitoring routines
• dti off : Stop all the temperature monitoring routines. Temperature setting can be interrupted with dti off. Wait for the error message before asking for a new T.
• dti h[elp] : Explains these and further options like Resume / Introduction / Commands / Configuration / Monitor / States / Temperature / Dynamic / Limits / Wait / Pause / Range / SetTime / Power / Cooldown / Warmup

A new dti interface has been installed recently, there may be slight changes and new features.

Using the instrument control program MAD

Note : users' answers are noted in bold characters, means Carriage Return, letters given in brackets [..] may be omitted

Change (or at least check) the value of parameter CRY : must be 1 if cryostat is used. :

• Read only : MAD> par cry
• Modify : MAD> par cry 1 (Cryostat with ILL Sample Environment Controler)
• Abandon: MAD> par cry 0 (no cryostat)

Now you may set a temperature with pte temperature timeout [waittime] or read it with rte.

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