Patent Number: 
Section: abstract

The invention relates to a cooling apparatus (101) for a sample in an ion beam etching process, including, a sample stage (102) for arranging the sample, a coolant receptacle (120) containing a coolant, at least one thermal conduction element (106a, 106b) that connects the sample stage (102) to the coolant, a cooling finger (105) connected to the thermal conduction element (106a, 106b), the cooling finger (105) comprising a conduit (130, 131) through which coolant can flow and which is connectable to the coolant receptacle (120). The invention further relates to a method of adjusting the temperature of a sample in an ion beam etching process, including mounting a sample on a coolable sample stage (102), aligning the sample on the sample stage (102), and cooling the sample by coolant directed through a conduit (130, 131) of a cooling finger.