background image

 

Roughing/
Turbo 
switch 

Off/Run 
switch 

Pressure 
reading 

Turbo 
control panel 

Turbo 
Pump 

Rotary 
Pump 

 

Figure 2

  The layout of the front panel on the vacuum pump used with the muon liquid handling 

system. 

 

 

 

 

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Содержание Muon Liquid Handling System None

Страница 1: ...Muon Liquid Handling System User Guide C Johnson S P Cottrell et al Version 0 2 1...

Страница 2: ...essel 2 7 2 2 3 Removing air from Vessel 3 7 2 2 4 Evacuation of the sample cell 7 2 3 Freeze Pump Thaw cycle 8 2 3 1 Sample in Vessel 1 8 2 3 2 Sample in Vessel 2 8 2 3 3 Sample in Vessel 3 9 2 4 Liq...

Страница 3: ...uid handling system are shown in Figure 1 Inlet 1 Inlet 2 Gas pressure Cell pressure To pump To cell Baratron Vessel 2 Vessel 1 Vessel 3 Figure 1 The layout of the front panel on the muon liquid handl...

Страница 4: ...e a means of flowing liquid into and out of the cell along with feed throughs for an RF excitation signal and a pick up coil Figure 2 The liquid sample cell mounted on a sample stick with a flat coil...

Страница 5: ...Roughing Turbo switch Off Run switch Pressure reading Turbo control panel Turbo Pump Rotary Pump Figure 2 The layout of the front panel on the vacuum pump used with the muon liquid handling system 5...

Страница 6: ...ls It is important to note that a small amount of liquid may remain in the system after sample loading is finished Care must be taken to prevent this liquid reaching the pump 2 2 Evacuation of the sys...

Страница 7: ...n the sample is frozen a vacuum can be achieved by switching the pump to its roughing mode and opening valve V1 For a high vacuum switch the pump to turbo 2 2 3 Removing air from Vessel 3 Once the sys...

Страница 8: ...be read from the baratron gauge Tap B should be closed to prevent suck back of the liquid as the solid thaws The sample can be warmed gently to aid the thawing process and when complete close tap A 2...

Страница 9: ...t by cooling evacuation or both 2 4 1 Vessel 1 to sample cell The transfer of liquid from Vessel 1 to the sample cell is brought about by the difference in pressure between that in the Vessel and a va...

Страница 10: ...the sample cell When it is judged that sufficient liquid has been transferred to fill the sample cell close valve V5 At this point it must be remembered that the lower manifold contains liquid which m...

Страница 11: ...e evacuation procedure may be required The liquid may also be encouraged to leave the sample cell by using a small amount of gas Close valve V3 and open valve V9 to allow helium gas into this part of...

Страница 12: ...liquid may also be encouraged to leave the sample cell by using a small amount of gas Close valve V3 and open valve V10 to allow helium gas into the lower part of the system Close valve V10 and carefu...

Страница 13: ...he rig Muon spin resonance experiments were performed at 2 G and 20 G followed by reattached to the rig At this point the rig was open to the air and so had to be evacuated and pumped for 30 minutes T...

Страница 14: ...ond experiment all of the n hexane used in the first experiment was recovered into a sample bottle and dried using a small piece of clean sodium The liquid was carefully poured back into Vessel 1 and...

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