Queretaro, 2012. Development of the Laboratory 2002 April: Acquisition of the two Cesium clocks


НазваQueretaro, 2012. Development of the Laboratory 2002 April: Acquisition of the two Cesium clocks
Дата конвертації15.03.2013
Розмір445 b.
ТипПрезентации


CENAMEP AIP: Time and Frequency Laboratory current status

Raul Fernando Solis Betancur

rsolis@cenameporg.pa

Queretaro, 2012.

Development of the Laboratory

  • 2002 - April: Acquisition of the two Cesium clocks.

  • 2003 - October: Starting of the report to the BIPM and the beginning of the UTC(CNMP).

  • 2005 - December: Incorporation to the common view system started by NORAMED.

  • 2006 - August: First CMC included in the BIPM database.



Development of the Laboratory

  • From 2007 to 2009: Time dissemination services (Voice, Web Clock and NTP).

  • 2009 - February: Declaration of the Time and Frequency National Standards based in the atomics clocks of the CENAMEP.

  • 2009 - December: Implementation of the phase measurement system for the local comparison.

  • 2010 - February: Beginning of the monthly report to the BIPM about local comparison.



Development of the Laboratory

  • 2010 - June: Declaration of the UTC(CNMP) as the Official Time of the governmental institutions.

  • 2011 - March: New UTC(CNMP) based in the master clock and the Phase and Frequency Offset Generator.

  • 2011 - October: New CMC included in the BIPM database.

  • 2012 - January: Participation in the pilot project called rapid UTC, the UTCr.



Laboratory Staff

  • Raul F. Solis B. Electronic Engineer. Since May 2006.

  • Luis M. Mojica O. Electronic Engineer. Since May 2008.

  • Actually two metrologists are working in the Time and Frequency Metrology and the Radiofrequency and Microwave Metrology.



Quality assessments conducted

  • Michael Lombardi – NIST (July 2005 and July 2011).

  • Dr. Jean Simon Boulanger – NRC (September 2005).

  • Dr. José Mauricio López – CENAM (October 2007 and November 2008).

  • Dr. Ricardo José de Carvalho – ONRJ (August 2010).



Time and Frequency Laboratory

  • Actually is separated in three laboratories (only his quality system) meanwhile the new building is constructed (2014):

    • Primary Laboratory.
    • Secondary Laboratory.
    • Dissemination Laboratory.


Primary Laboratory

  • Objectives:

    • Maintenance of the National Time and Frequency Standards.
    • Provide traceability through UTC(CNMP).
    • Development of new methods or system to improve the UTC(CNMP).
    • Provision of the T&F metrology.
    • Support other metrology areas of CENAMEP.


Structure



Reference system

  • Two low performance Cesium clocks.

  • DC batteries, UPS and power generator (backup for 3 days)

  • TTS-2 and SIMTFN System.

  • Phase and Frequency Offset Generator with the master clock for UTC and SIMT local realization.



Comparison and traceability

  • UTC (Circular T CCTF-K001.UTC since October 2003). World key comparison.

  • SIMTFN (and the SIMT) since December 2005. Regional comparison.

  • Phase measurement system since December 2009. Local comparison.



UTC(CNMP) and SIMT(CNMP)

  • Data since 2010/04/23 to 2012/07/31.



Local comparison

  • Data since 2010/02/3 to 2012/08/30.



UTC(CNMP) and UTCr(CNMP)

  • Data since 2012/01/30 to 2012/08/30.



Secondary Laboratory

  • Objectives:

    • Provide calibration in T&F services with traceability under the ISO 17025.
    • Development of new calibration method (seeking to low the calibration costs)
    • Training and knowledge calibration transfer.
    • Increase the income of the laboratory.


Equipment

  • Two universal counters.

  • Time and Frequency Processing Card.

  • Two optical tachometer.

  • Two signal generators.

    • One oscilloscope.
    • Auxiliary equipment (environmental sensors, signal mixers and LP filters).
    • PC with software for the process automation.


Calibration services acknowledge

  • Included CMC in the Time and Frequency area:

    • MIT: Time interval meters (2006).
    • MFAO: Optical coupling frequency meters (2006).
    • OSC: Oscillators (2011).
    • SSF: Signal Frequency Synthesizer (2011).
    • CF: Frequency counters (2011).
  • In 2011, the original first CMC were evaluated for his vitality.



Calibration services acknowledge

  • Services accredited in 2007:

    • MIT: Time interval meters.
    • MFAO: Optical coupling frequency meters.
    • MFAM: Mechanical coupling frequency meters
    • GFR: rotation frequency generators.
  • Funding cuts and bureaucratic problems caused the suspension of the evaluation in 2012. For this reason we lost the accreditation.



Measurement capabilities



Knowledge transfer

  • The laboratory transfer his knowledge with courses and trainings:

    • Clinical centrifuges, optical and mechanical tachometers calibrations.
    • Introduction to the time and frequency metrology.
    • Introduction to the measurement uncertainty estimation (GUM).


Dissemination Laboratory

  • Objectives:

    • Dissemination of the UTC(CNMP) in the time magnitude.
    • Development
    • Increase the income of the laboratory.




Equipment

  • Two NTP server synchronized to the 1 PPS with a 10 MHz signal for backup.

  • One Web server synchronized with the NTP server.

  • Three time server by voice synchronized with the NTP server and the 1 PPS from the UTC(CNMP).



Web Clock

  • http://horaexacta.cenamep.org.pa/

  • Near of 640 000 visits since 2007 to December 2011.

  • 18,5% of the user not use Java.

  • 5713 visits were from smart phones.

  • The countries with more visits (in order of visits): Colombia, Canada, United States, Spain, Venezuela and Mexico.



Time by Voice

  • Analog access calling: (+507) 517-3201, 517-3202 and 517-3203.

  • Three systems were developed by the CENAM based in a own project.

  • The system is a desktop pc, a software program that control the sound files and the time, a NTP client program and the 1PPS signal to keep running the hour

  • Near of 5400 callings since March 2009 to December 2011.



Network synchronization

  • NTP synchronization.

  • 35 (government and private) institutions use the service.

  • Near of 7,4 millions of synchronization request each 5 minutes (since 2009 to December 2011).

  • Financial companies, governmental organism and logistic companies generated the major of the request.



Laboratory weakness

  • Only 2 cesium clocks (10 years).

  • TTS-2 had 10 years of continued working. The TTS-2 is discontinued.

  • Physical space and electrical capabilities are limited.

  • The accreditations of the past review services were loss.

  • Only 2 people to 5 laboratories limit the time for investigation and development of new methods, standards and improvements.



Future works

  • Fully automation of the report process to the BIPM (monthly and weekly files).

  • With the new cesium clock (maybe the arrival is in December or January) we need to update the software to ensure the comparison of the three clocks and their traceability.

  • The CENAMEP Time Scale.

  • Remote calibration of clocks and oscillators.



Future works

  • New time and frequency dissemination services to the electrical and telecommunication companies.

  • A new national law about the Official Time for Panama (the actual law only cover the government institutions).



¡Thanks!

¡Thanks!


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