Log here the cooldowns: Name_setup/Date-start/He-level start/He-level end/Sample/T-range/Magnetic field range/Date-end/Notes. Under “Notes” report whether He has been refilled during the cooldown. End date is defined when the sample/insert is taken out to air.

Name STM/setup	Name Operators	Date start (dd/mm/yy)	He-start (mm)	He-end (mm)	Sample	T-range (K)	UHV pressure (mbar)	H-range (T)	Date-end (dd/mm/yy)	Notes
S-STM	federica	06-02-07	0	0	several	300	6.6 10-8	none	18-02-07	initial testings
S-STM	federica	19-02-07	0	0	MoGe/Au(50nm) old cap layer	300	6.6 10-8	none	22-02-07	further testing of the scanner.
S-STM	federica	26-02-07	0	0	MoGe/Au(50nm) 230207	300	6.6 10-8	none	16-03-07	further testing. Problems with signal stability. No scanning possible. Change tip. Succeded, but when mounting the sample back the sample-holder holder comes loose! UHV have to opened again!
S-STM	federica	april-07	0	0	n.a.	300	A.P.	none	end may-07	repair of sample and tip holders. “Upgrade” of the Z-motor spacers into a frame that provides mechanical stop mechanism to avoid spring deformation during tip exchange. New coarse approach “policy”, see blog.
S-STM	federica, sander	08-06-07	0	0	several	300-100	5 10-10	none	04-07-07	Successfull, until problems with tip/sample transfer interrupt the run. Lowest T reached is 100K
S-STM	federica	beg-09-07	–	–	several	300-90	4 10-10	nov-07	0-7	successfull but still using “bad method” to change tip/sample by “grabbing” the insert using un-wanted friction between the 1K shield and the he-3 shield