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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(08) [August 2012] >
| Title: | Design and development of atomic flux controller for cesium Fountain clock at NPL, India |
| Authors: | Pant, Kavindra
Arora, Poonam
Yadav, Suchi
Gupta, Amitava Sen |
| Keywords: | Thermoelectric coolers
Wheatstone bridge
Lock-in amplifier
Phase shift
Feedback control |
| Issue Date: | Aug-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | In the present paper, the development of an electronic module for controlling
the atomic flux from Cesium (Cs) Source (Cs ampoule) to the cooling chamber of
Physics package of Cs fountain clock being developed at National Physical
Laboratory (NPL) India,
is described. Cs source is integrated with octagonal cooling chamber and the
amount of Cs diffusing into the chamber is controlled by controlling the
temperature of Cs ampoule. The atomic flux controller is basically a
temperature controller which is designed for maintaining the temperature from
10°C to 80°C. It is based on lock-in amplifier and proportional-integral-differential
(PID) controller techniques for precise control of temperature. We have used
Thermoelectric Coolers (TECs) for cooling and heating the Cs ampoule. |
| Page(s): | 593-599 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(08) [August 2012]
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