The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate

Dennis Lee; Giles Novak; Marc Berthoud; John Bussan; Robert Golenia; Eric Van Clepper; Grant Wilson; N. S. Denigris; Zhiyuan Ma; Michael McCrackan; Kamal Souccar; Laura Fissel; Akanksha Bij; Felix Thiel; Itziar Aretxaga; Daniel Ferrusca; Philip Mauskopf; Emily Lunde; Peter Ade; Carole Tucker; Giampaolo Pisano; Erin G. Cox; Laurence Sabin; Carlos Carrasco-Gonzalez; Alice Pasetto; Arturo Gomez-Ruiz; Chat Hull; Jason Austermann; James Beall; Jiansong Gao; Michael Vissers

doi:10.1117/12.2627725

The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate

Dennis Lee, Giles Novak, Marc Berthoud, John Bussan, Robert Golenia, Eric Van Clepper, Grant Wilson, N. S. Denigris, Zhiyuan Ma, Michael McCrackan, Kamal Souccar, Laura Fissel, Akanksha Bij, Felix Thiel, Itziar Aretxaga, Daniel Ferrusca, Philip Mauskopf, Emily Lunde, Peter Ade, Carole TuckerGiampaolo Pisano, Erin G. Cox, Laurence Sabin, Carlos Carrasco-Gonzalez, Alice Pasetto, Arturo Gomez-Ruiz, Chat Hull, Jason Austermann, James Beall, Jiansong Gao, Michael Vissers

Earth and Space Exploration, School of (SESE)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

An ambient-Temperature Continuously Rotating Half-Wave Plate (CRHWP) modulates the input polarization signal thereby enabling removal of low-frequency (1/f) noise from polarized flux measurements. This 1/f noise arises from atmospheric turbulence as well as from effects intrinsic to certain detectors. Here, we describe the design and performance of the half wave plate rotator and achromatic half-wave plate for the the new imaging polarimeter, TolTEC. These components are mounted in front of the cryostat window and operate at ambient temperature. The Half-Wave Plate Rotator (HWPR) spins the half-wave plate at 2 revolutions per second. The rotation mechanism consists of nine air bearings to provide low-friction motion and a frameless torque motor to directly drive rotation. The orientation of the rotor and half-wave plate are recorded using a high-precision optical encoder. We review the experimental requirements and technical design of the rotator as well as the associated electronics, pneumatics, and software.

Original language	English (US)
Title of host publication	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI
Editors	Jonas Zmuidzinas, Jian-Rong Gao
Publisher	SPIE
ISBN (Electronic)	9781510653610
DOIs	https://doi.org/10.1117/12.2627725
State	Published - 2022
Event	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022 - Montreal, Canada Duration: Jul 17 2022 → Jul 22 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12190
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022
Country/Territory	Canada
City	Montreal
Period	7/17/22 → 7/22/22

Keywords

mm-wave
polarimetry
toltec

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2627725

Cite this

Lee, D., Novak, G., Berthoud, M., Bussan, J., Golenia, R., Van Clepper, E., Wilson, G., Denigris, N. S., Ma, Z., McCrackan, M., Souccar, K., Fissel, L., Bij, A., Thiel, F., Aretxaga, I., Ferrusca, D., Mauskopf, P., Lunde, E., Ade, P., ... Vissers, M. (2022). The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate. In J. Zmuidzinas, & J.-R. Gao (Eds.), Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI Article 121901O (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12190). SPIE. https://doi.org/10.1117/12.2627725

The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate. / Lee, Dennis; Novak, Giles; Berthoud, Marc et al.
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI. ed. / Jonas Zmuidzinas; Jian-Rong Gao. SPIE, 2022. 121901O (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12190).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, D, Novak, G, Berthoud, M, Bussan, J, Golenia, R, Van Clepper, E, Wilson, G, Denigris, NS, Ma, Z, McCrackan, M, Souccar, K, Fissel, L, Bij, A, Thiel, F, Aretxaga, I, Ferrusca, D, Mauskopf, P, Lunde, E, Ade, P, Tucker, C, Pisano, G, Cox, EG, Sabin, L, Carrasco-Gonzalez, C, Pasetto, A, Gomez-Ruiz, A, Hull, C, Austermann, J, Beall, J, Gao, J & Vissers, M 2022, The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate. in J Zmuidzinas & J-R Gao (eds), Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI., 121901O, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12190, SPIE, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022, Montreal, Canada, 7/17/22. https://doi.org/10.1117/12.2627725

Lee D, Novak G, Berthoud M, Bussan J, Golenia R, Van Clepper E et al. The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate. In Zmuidzinas J, Gao JR, editors, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI. SPIE. 2022. 121901O. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2627725

Lee, Dennis ; Novak, Giles ; Berthoud, Marc et al. / The TolTEC camera : Polarimetric commissioning and performance of the continuously rotating half-wave plate. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI. editor / Jonas Zmuidzinas ; Jian-Rong Gao. SPIE, 2022. (Proceedings of SPIE - The International Society for Optical Engineering).

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title = "The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate",

abstract = "An ambient-Temperature Continuously Rotating Half-Wave Plate (CRHWP) modulates the input polarization signal thereby enabling removal of low-frequency (1/f) noise from polarized flux measurements. This 1/f noise arises from atmospheric turbulence as well as from effects intrinsic to certain detectors. Here, we describe the design and performance of the half wave plate rotator and achromatic half-wave plate for the the new imaging polarimeter, TolTEC. These components are mounted in front of the cryostat window and operate at ambient temperature. The Half-Wave Plate Rotator (HWPR) spins the half-wave plate at 2 revolutions per second. The rotation mechanism consists of nine air bearings to provide low-friction motion and a frameless torque motor to directly drive rotation. The orientation of the rotor and half-wave plate are recorded using a high-precision optical encoder. We review the experimental requirements and technical design of the rotator as well as the associated electronics, pneumatics, and software.",

keywords = "mm-wave, polarimetry, toltec",

author = "Dennis Lee and Giles Novak and Marc Berthoud and John Bussan and Robert Golenia and {Van Clepper}, Eric and Grant Wilson and Denigris, {N. S.} and Zhiyuan Ma and Michael McCrackan and Kamal Souccar and Laura Fissel and Akanksha Bij and Felix Thiel and Itziar Aretxaga and Daniel Ferrusca and Philip Mauskopf and Emily Lunde and Peter Ade and Carole Tucker and Giampaolo Pisano and Cox, {Erin G.} and Laurence Sabin and Carlos Carrasco-Gonzalez and Alice Pasetto and Arturo Gomez-Ruiz and Chat Hull and Jason Austermann and James Beall and Jiansong Gao and Michael Vissers",

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year = "2022",

doi = "10.1117/12.2627725",

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series = "Proceedings of SPIE - The International Society for Optical Engineering",

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AU - Lee, Dennis

AU - Novak, Giles

AU - Berthoud, Marc

AU - Bussan, John

AU - Golenia, Robert

AU - Van Clepper, Eric

AU - Wilson, Grant

AU - Denigris, N. S.

AU - Ma, Zhiyuan

AU - McCrackan, Michael

AU - Souccar, Kamal

AU - Fissel, Laura

AU - Bij, Akanksha

AU - Thiel, Felix

AU - Aretxaga, Itziar

AU - Ferrusca, Daniel

AU - Mauskopf, Philip

AU - Lunde, Emily

AU - Ade, Peter

AU - Tucker, Carole

AU - Pisano, Giampaolo

AU - Cox, Erin G.

AU - Sabin, Laurence

AU - Carrasco-Gonzalez, Carlos

AU - Pasetto, Alice

AU - Gomez-Ruiz, Arturo

AU - Hull, Chat

AU - Austermann, Jason

AU - Beall, James

AU - Gao, Jiansong

AU - Vissers, Michael

PY - 2022

Y1 - 2022

N2 - An ambient-Temperature Continuously Rotating Half-Wave Plate (CRHWP) modulates the input polarization signal thereby enabling removal of low-frequency (1/f) noise from polarized flux measurements. This 1/f noise arises from atmospheric turbulence as well as from effects intrinsic to certain detectors. Here, we describe the design and performance of the half wave plate rotator and achromatic half-wave plate for the the new imaging polarimeter, TolTEC. These components are mounted in front of the cryostat window and operate at ambient temperature. The Half-Wave Plate Rotator (HWPR) spins the half-wave plate at 2 revolutions per second. The rotation mechanism consists of nine air bearings to provide low-friction motion and a frameless torque motor to directly drive rotation. The orientation of the rotor and half-wave plate are recorded using a high-precision optical encoder. We review the experimental requirements and technical design of the rotator as well as the associated electronics, pneumatics, and software.

AB - An ambient-Temperature Continuously Rotating Half-Wave Plate (CRHWP) modulates the input polarization signal thereby enabling removal of low-frequency (1/f) noise from polarized flux measurements. This 1/f noise arises from atmospheric turbulence as well as from effects intrinsic to certain detectors. Here, we describe the design and performance of the half wave plate rotator and achromatic half-wave plate for the the new imaging polarimeter, TolTEC. These components are mounted in front of the cryostat window and operate at ambient temperature. The Half-Wave Plate Rotator (HWPR) spins the half-wave plate at 2 revolutions per second. The rotation mechanism consists of nine air bearings to provide low-friction motion and a frameless torque motor to directly drive rotation. The orientation of the rotor and half-wave plate are recorded using a high-precision optical encoder. We review the experimental requirements and technical design of the rotator as well as the associated electronics, pneumatics, and software.

KW - mm-wave

KW - polarimetry

KW - toltec

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DO - 10.1117/12.2627725

M3 - Conference contribution

AN - SCOPUS:85140756991

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI

A2 - Zmuidzinas, Jonas

A2 - Gao, Jian-Rong

PB - SPIE

Y2 - 17 July 2022 through 22 July 2022

ER -

The TolTEC camera: Polarimetric commissioning and performance of the continuously rotating half-wave plate

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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