Report on Calculations Regarding ITM and Wide-Angle-Baffles (WAB) in the Cryostat

Document #:

JGW-G1504660-v3

Document type:

G

Submitted by:

Simon Zeidler

Updated by:

Simon Zeidler

Document Created:

04 Dec 2015, 16:40

Contents Revised:

23 Mar 2017, 11:18

DB Info Revised:

23 Mar 2017, 11:18

Abstract:

Regarding the WABs and ITMs in KAGRA, calculations with the simulation tool “LightTools” have been done in order to reveal the most efficient design of WABs corresponding to questions about scattering, size, and costs of the baffles. For all three parameters, a minimum is desired especially for the scattering and the size as for the first, the ITMs are very crucial parts of KAGRA and thus sensible to even small amounts of scattering. And as for the ladder, the space in the cryostat is limited and therefore as smaller the WAB will be as better the situation becomes.

Files in Document:

• ITM_WAB_cryostat.pdf (2.1 MB)

Topics:

• Management:Others
• Detector:Optics
• Activity:KAGRA

Authors:

• Simon Zeidler

Keywords:

scattering wide-angle-baffle design