Modular getters and getters with different materials in vacuum enclosures
Some embodiments include an apparatus, comprising: a vacuum enclosure including an opening; a support structure disposed in the vacuum enclosure, the support structure comprising: a first portion attached to the vacuum enclosure at the opening; and a second portion extending within the vacuum enclosure; and a plurality of getters disposed on the second portion of the support structure.
1 . An apparatus comprising:
a vacuum enclosure including an opening;
a support structure disposed in the vacuum enclosure, the support structure comprising:
a first portion attached to the vacuum enclosure at the opening; and
a second portion extending within the vacuum enclosure;
a plurality of getters disposed on the second portion of the support structure;
a first heating element associated with a first getter of the plurality of getters; and
a second heating element associated with a second getter of the plurality of getters,
wherein the second heating element is connected in series with the first heating element or is individually electrically addressable relative to the first heating element.
2 . The apparatus of claim 1 , further comprising:
at least one resilient component;
wherein movement of each of the getters is constrained at least in part by a corresponding one of the at least one resilient component.
3 . The apparatus of claim 2 , wherein for at least one of the getters:
the getter includes a first end adjacent a corresponding rigid component of the support structure and a second end adjacent to the corresponding one of at least one resilient component;
the getter contacts the support structure at the first end; and
the getter is offset from the support structure at the second end.
4 . The apparatus of claim 1 , wherein:
the support structure comprises a plurality of rigid components; and
each of the getters is constrained by a corresponding one of the plurality of rigid components.
5 . The apparatus of claim 1 , wherein:
the support structure comprises an extendible structure.
6 . The apparatus of claim 1 , further comprising:
a plurality of feedthroughs penetrating the first portion of the support structure;
wherein:
at least one of the getters is electrically connected to the feedthroughs.
7 . The apparatus of claim 6 , wherein:
at least two of the getters are electrically connected to the feedthroughs in series; and/or
at least two of the getters are electrically connected to the feedthroughs in parallel.
8 . The apparatus of claim 6 , wherein:
at least two of the getters are individually activatable through the feedthroughs.
9 . The apparatus of claim 8 , wherein:
at least one of the getters is not individually activatable through the feedthroughs.
10 . The apparatus of claim 1 , wherein:
the getters disposed on the support structure are insertable into the opening from outside of the vacuum enclosure.
11 . The apparatus of claim 1 , further comprising:
an electron emitter disposed in the vacuum enclosure;
a shield electrically connected to the vacuum enclosure and disposed between the electron emitter and the getters.
12 . The apparatus of claim 11 , wherein:
the electron emitter comprises multiple field emitters.
13 . The apparatus of claim 1 , wherein:
a first type of a first one of the getters is different from a second type of a second one of the getters;
the first type comprises a first material;
the second type comprises a second material; and
the first material is different from the second material.
14 . A method comprising:
providing a support structure including a first portion and a second portion;
mounting a plurality of getters on the second portion of the support structure, wherein the mounting comprises:
attaching a plurality of rigid components to the support structure such that each rigid component of the plurality of rigid components constrains a corresponding getter of the plurality of getters, each of the plurality of rigid components comprising a washer, a nut, or a protrusion rigidly attached to the support structure; and
constraining at least one of the getters between a rigid component of the plurality of rigid components and a resilient component;
inserting the support structure with the getters into an opening of a vacuum enclosure; and
attaching the first portion of the support structure to the vacuum enclosure at the opening.
15 . The method of claim 14 , wherein inserting the support structure with the getters into the opening of the vacuum enclosure comprises:
inserting the support structure with the getters into the opening of the vacuum enclosure from outside of the vacuum enclosure.
16 . The method of claim 14 , further comprising:
extending the second portion of the support structure.
17 . The method of claim 14 , further comprising:
electrically connecting at least one of the getters to a feedthrough penetrating the first portion of the support structure.
18 . An apparatus comprising:
a vacuum enclosure;
a plurality of getters for capturing atoms or molecules disposed within the vacuum enclosure, the plurality of getters comprising:
a first getter with a first heating element; and
a second getter with a second heating element electrically connected to the first heating element in series;
a support structure for supporting the plurality of getters, wherein a first portion of the support structure attaches the support structure to the vacuum enclosure.
19 . The apparatus of claim 18 , further comprising at least one of:
the first heating element and the second heating element selectively activate the plurality of getters; or
a feedthrough for electrically connecting to at least one of the plurality of getters.
20 . The method of claim 14 , wherein at least two of the plurality of getters are electrically addressable through a plurality of feedthroughs.