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The Simons Observatory: Rotation Performance of Cryogenic Half-wave Plate Polarization Modulators

  • Authors: Kyohei Yamada, Bryce Bixler, Junna Sugiyama, Daichi Sasaki, Yuki Sakurai, Kam Arnold, Samuel Day-Weiss, Nicholas Galitzki, Bradley R. Johnson, Akito Kusaka, Lyman A. Page, Yoshinori Sueno, Satoru Takakura

Kyohei Yamada et al 2026 The Astrophysical Journal Supplement Series 286 .

  • Provider: AAS Journals

Caption: Figure 2.

The left and middle panels show the distribution of glitched encoder counts separated by glitch type and platform. A typical observation is 1 hr and contains approximately 107 encoder counts. Glitches found for SAT2 were minimal among three SATs, and not reported explicitly. The right panel shows an idealized data point glitch and value glitch, along with an expected digitized encoder signal.

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