Hi I guess the question then would be:
Is a H Maser that runs 6.6 x 10^-12 at 1 second worth the trouble? With 100 KHz / C temperature coefficients running around, getting good stability in a real world setting at 1 day will be “interesting”. Just for reference: The MH-2010 data sheet shows 1.5x10^-13 at 1 second for the “cheap” version and 8x10^-14 at one second for the low noise version. Data showing the 5065 Rb at 1x10^-12 at 1 second is running around on various web sites. The NIST paper suggests that they made several prototypes before they got one good one working. That’s a lot of “fun and games” with ceramic machine lathes and Rb magnetometers….. The punch line being - would the same effort / cost / many years of time be more fruitful (ADEV wise) doing a large package Rb (like a 5065) ? Based on the number of people making them in volume over the years, Rb’s appear to be the easier item to debug, design, and build. Bob > On Jan 8, 2017, at 6:01 AM, Bruce Griffiths <[email protected]> > wrote: > > You could try a cavity like the one in;http://tf.nist.gov/general/pdf/156.pdf > > This avoids the requirement for a fused quartz storage bulb. > Bruce > > On Sunday, 8 January 2017 11:33 PM, timeok <[email protected]> wrote: > > > > Hi, > the thought of being able to work on building a H Maser has always > accompanied me in recent years. > I fully understand the many difficulties of this project and also the > necessity of a work team. > Maybe a Passive Maser would be easiest to implement, but I do not know in > detail the processes > of construction of the physical part of the interrogation. > Honestly, I would love to spend My next ten years on a project like this, > but... > my curiosity is to know of there are other people with these mental disorders > on earth. > > If you want to answer me. > Luciano > www.timeok.it > _______________________________________________ > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
