From Wikipedia, the free encyclopedia
This is a list of some experimental laboratory
atomic clocks worldwide.
Name
Operation date
Type
Accuracy
Location
Image
CS1
[1]
1969
Cs
7× 10−15
CS2
[2]
1985
Cs
1.2× 10−14
CS3
1988
Cs
CS4
1992-2005
Cs
CSF1
[3]
1999
Cs fountain
4× 10−16
CSF2
[4]
2009
Cs fountain
2× 10−16
FOCS
NPL-CsF2, Yb+ and Sr+ ion clocks, Sr lattice clock, 4 hydrogen masers
[5]
[6]
NIST-F1 ,
[7]
Cs fountain
3.1× 10−16
NIST-F2
[9]
Cs fountain
1.1× 10−16
USNO Alternate Master Clock
WWV
Department of Defense master clock
18 cesium atomic clocks and 4 hydrogen maser clocks
Cs, H
Optical lattice clock
NMIJ-F1, NMIJ-F2
[16]
Cs fountain
4.7× 10−16
Optical clock
[17]
2012
Ca ion
Caesium Beam Atomic Clock
[18]
[19]
Cs
9 Agilent 5071A caesium clocks
[21]
Cs
5× 10−13
KRISS-1
[23]
[24]
Cs
1× 10−14
Caesium atomic clocks
[25]
Cs
Five caesium clocks, one passive hydrogen maser, two active hydrogen masers.
[26]
Cs, H
DOST -
PAGASA Juan Time
[27]
Caesium clocks, Hydrogen Maser
[28]
Cs
SOC: Space Optical Clock breadboard (Sr lattice clock)
[29]
Sr lattice
Deep Space Atomic Clock
[30]
2019-2021
Hg ion
Caesium atomic clocks
[31]
Cs
References
^
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^
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^
"Seit wann läuft die erste Atomuhr in der PTB?" . Themenrundgänge / Fragen zur Zeit . Physikalisch-Technische Bundesanstalt. Archived from
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^
"Seit wann läuft die erste Atomuhr in der PTB?" . Themenrundgänge / Fragen zur Zeit . Physikalisch-Technische Bundesanstalt. Archived from
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^ Palmer, Jason.
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^
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^
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^
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"U.S. Naval Observatory Alternate Master Clock" . U.S. Navy. Retrieved 2013-02-09 .
^
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"Mission of Japan Standard Time Group - Generation of Japan Standard Time (JST)" . National Institute of Information and Communications Technology. Retrieved 2013-03-05 .
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^
"Quantum Metrology Laboratory" . RIKEN Advanced Science Institute. Archived from
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^ Takamizawa, A.; Yanagimachi, S.; Shirakawa, Y.; Watabe, K.; Hagimoto, K.; Ikegami, T.,
"Cesium Atomic Fountain Clocks at NMIJ" (PDF) , Precise Time and Time Interval Systems and Applications Meeting , pp. 321–328, archived from
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^ Wang, Yuanyuan (2012-07-12).
"China unveils first optical clock" . English News . Xinhuanet. Archived from
the original on 2012-07-15. Retrieved 2013-02-04 .
^
"Caesium Beam Atomic Clock" . The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-14 .
^
"History of Hong Kong Time Service" . The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11 .
^
"Contact us" . The Government of the Hong Kong Special Administrative Region. Retrieved 2013-02-11 .
^
"Clocks and Time scales" . National Time and Frequency Standard Laboratory. Retrieved 2013-02-14 .
^
"Current activities of the National Standard Time and Frequency Laboratory of the Telecommunication Laboratories" (PDF) . Archived from
the original (PDF) on 2013-02-17. Retrieved 2013-02-14 .
^
"Development of Korea's First Primary Frequency Standard, 'KRISS-1' " (PDF) . KRISS. Retrieved 2013-03-01 .
^ Lee, Ho Seong; Kwon, Taeg Yong; Park, Sang Eon; Choi, Sang-Kyung; Park, Young-Ho (August 2004).
"Research on Cesium Atomic Clocks at the Korea Research Institute of Standards and Science" . Journal of the Korean Physical Society . 45 (2): 256–272. Archived from
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^
"About SST" . National Metrology Centre. Archived from
the original on 2013-04-18. Retrieved 2013-03-01 .
^
"Time and Frequency Metrology" . CSIR-National Physical Laboratory . CSIR-National Physical Laboratory. Retrieved 2023-03-25 .
^
"With PST, "Filipino time" is now "on time" " . Department of Science and Technology. Retrieved 2014-06-07 .
^
"Time Standard" . Indonesian Institute of Sciences. Archived from
the original on 2016-01-21. Retrieved 2016-06-22 .
^
"Space Optical Clock" . Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf. Retrieved 2017-01-30 .
^
"Deep Space Atomic Clock" . NASA's Jet Propulsion Laboratory . NASA. 27 April 2015. Retrieved 2015-10-28 .
^
"Uruchomiono najdokładniejszy zegar atomowy w Polsce. Nie straci nawet sekundy przez 200 mln lat" . wyborcza.pl. Retrieved 2018-03-24 .