We present an empirical measurement of the dark count rate seen in a large-format MKID array identical to those currently in use at observatories such as Subaru on Maunakea. This work provides compelling evidence for their utility in future experiments that require low-count rate, quiet environments such as dark matter direct detection. Across the bandpass from 0.946-1.534 eV (1310-808 nm) an average count rate of (1.847 ± 0.003) × 10−3photons/pixel/s is measured. Breaking this bandpass into 5 equal-energy bins based on the resolving power of the detectors we find the average dark count rate seen in an MKID is (6.26 ± 0.04) × 10−4photons/pixel/s from 0.946-1.063 eV and (2.73 ± 0.02) × 10−4photons/pixel/s at 1.416-1.534eV. Using lower-noise readout electronics to read out a single MKID pixel we demonstrate that the events measured while the detector is not illuminated largely appear to be a combination of real photons, possible fluorescence caused by cosmic rays, and phonon events in the array substrate. We also find that using lower-noise readout electronics on a single MKID pixel we measure a dark count rate of (9.3 ± 0.9) × 10−4photons/pixel/s over the same bandpass (0.946-1.534 eV) With the single-pixel readout we also characterize the events when the detectors are not illuminated and show that these responses in the MKID are distinct from photons from known light sources such as a laser, likely coming from cosmic ray excitations.
- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources3
- Resource Type
-
00000030000
- More
- Availability
-
30
- Author / Contributor
- Filter by Author / Creator
-
-
Swimmer, Noah (3)
-
Zobrist, Nicholas (3)
-
Brandt, Timothy D. (2)
-
Bumble, Bruce (2)
-
Chilcote, Jeffrey (2)
-
Coiffard, Gregoire (2)
-
Currie, Thayne (2)
-
Daal, Miguel (2)
-
Davis, Kristina K. (2)
-
Deo, Vincent (2)
-
Dodkins, Rupert (2)
-
Fruitwala, Neelay (2)
-
Groff, Tyler D. (2)
-
Guyon, Olivier (2)
-
Jovanovic, Nemanja (2)
-
Kasdin, N. Jeremy (2)
-
Kuzuhara, Masayuki (2)
-
Lozi, Julien (2)
-
Martinache, Frantz (2)
-
Mazin, Benjamin A. (2)
-
- Filter by Editor
-
-
null (1)
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Sahin. I. (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
-
Swimmer, Noah ; Currie, Thayne ; Steiger, Sarah ; Brandt, G. Mirek ; Brandt, Timothy D. ; Guyon, Olivier ; Kuzuhara, Masayuki ; Chilcote, Jeffrey ; Tobin, Taylor ; Groff, Tyler D. ; et al ( , The Astronomical Journal)
Abstract We present the direct imaging discovery of a low-mass companion to the nearby accelerating F star, HIP 5319, using SCExAO coupled with the CHARIS, VAMPIRES, and MEC instruments in addition to Keck/NIRC2 imaging. CHARIS
JHK (1.1–2.4μ m) spectroscopic data combined with VAMPIRES 750 nm, MECY , and NIRC2L pphotometry is best matched by an M3–M7 object with an effective temperature ofT = 3200 K and surface gravity log(g ) = 5.5. Using the relative astrometry for HIP 5319 B from CHARIS and NIRC2, and absolute astrometry for the primary from Gaia and Hipparcos, and adopting a log-normal prior assumption for the companion mass, we measure a dynamical mass for HIP 5319 B of , a semimajor axis of au, an inclination of degrees, and an eccentricity of . However, using an alternate prior for our dynamical model yields a much higher mass of . Using data taken with the LCOGT NRES instrument we also show that the primary HIP 5319 A is a single star in contrast to previous characterizations of the system as a spectroscopic binary. This work underscores the importance of assumed priors in dynamical models for companions detected with imaging and astrometry, and the need to have an updated inventory of system measurements. -
Steiger, Sarah ; Currie, Thayne ; Brandt, Timothy D. ; Guyon, Olivier ; Kuzuhara, Masayuki ; Chilcote, Jeffrey ; Groff, Tyler D. ; Lozi, Julien ; Walter, Alexander B. ; Fruitwala, Neelay ; et al ( , The Astronomical Journal)null (Ed.)