HEPI CROSSBEAM FOOT

Document #:

LIGO-D020195-v3

Document type:

D - Drawings

Abstract:

The output block for the HEPI system. 2x HEPI Actuators push on this block: one vertical and one horizontal. One end of a Crossbeam (HAM or BSC) is mounted rigidly to the Foot (the Crossbeam's other end is mounted to the Foot of the opposing HEPI). 2x HEPI Offload Springs mount to the back of the Foot, to support a share of the weight of the Support Structure + ISI + payload.

This part is also known as the "HEPI Boot".

Files in Document:

• D020195-v3 HEPI CROSSBEAM FOOT.pdf (1.2 MB)

Other Files:

• D020195_HEPI_Crossbeam_Foot.SLDPRT (5.8 MB)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Final Design
• Seismic Isolation

Authors:

• Andy Stein
• Ken Mason
• Michael Hillard

Keywords:

HEPI

Notes and Changes:

REDRAWN TO aLIGO STD, ADD OMITTED DIMS SUPPLIED BY VENDOR
D020195-00 used in D1100305 BSC foot assy right
D020195-01 used in D1100306 BSC foot assy left
D020195-02 used in D1100147 HAM foot assy right
D020195-03 used in D1100145 HAM foot assy left

Related Documents:

• LIGO-E1100015: HEPI DRAWING UPDATE
• LIGO-D1100145: HEPI CROSSBEAM ATTACHMENT, aLIGO HAM LEFT
• LIGO-D1100147: HEPI CROSSBEAM ATTACHMENT, aLIGO HAM RIGHT
• LIGO-D1100305: HEPI CROSSBEAM ATTACHMENT, aLIGO BSC LEFT
• LIGO-D1100306: HEPI CROSSBEAM ATTACHMENT, aLIGO BSC RIGHT

Referenced by:

• LIGO-D030326-v2: HEPI Crossbeam Attachment Asm