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ZTKS0156 / Z31820 / Rev.: 03
Assembling
4.3.1.2 Mounting the Getter Container
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Getter is a material, which absorbs helium gas to assure the quality of the vacuum for a
long time. After unpacking the getter starts to absorb moisture, reducing the capacity for
absorbing helium inside the cryostat.
Thus: Unpack getter container shortly before insertion. Close and evacuate the cryostat
no later than 4 hours after the insertion of the getter container. Wear clean gloves for
inserting to prevent contamination.
Figure 4.9: Mounting the Getter Container
1. Check the clamp (2); retighten it if neces-
sary.
2. Unpack the getter containers from their tin.
3. Insert the getter container (1) into the
clamps (2) respecting the orientation as
shown (flat side of the getter container
atop).
4. Check the distance to the radiation shield.
5. Start generating vacuum no later than
4 hours after inserting the getter container.
Figure 4.10: Checking the Getter Container
If the cryostat is equipped with a getter box
(1) like shown check if the getter box is:
1. mounted correctly and
2. not damaged.
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