Re: [time-nuts] Cs beam cavity: why is it U shaped?

2012-05-09 Thread Attila Kinali
On Tue, 1 May 2012 10:18:51 -0700 Tom Van Baak t...@leapsecond.com wrote: The U shape is called the Ramsey Cavity: http://www.nobelprize.org/nobel_prizes/physics/laureates/1989/ramsey-lecture.pdf Thanks a lot! That was exactly what i was looking for. It took me a while to read the paper

[time-nuts] Cs beam cavity: why is it U shaped?

2012-05-01 Thread Attila Kinali
Moin, For some time now, i'm wondering why the microwave cavity of Cs beam standards is U shaped. Ie why does the Cs beam fly first trough the first subcavity, leaves it, flies a substantial length trough free space, passes the second subcavity and then goes to the detector. If the interaction

Re: [time-nuts] Cs beam cavity: why is it U shaped?

2012-05-01 Thread Tom Van Baak
The U shape is called the Ramsey Cavity: http://www.nobelprize.org/nobel_prizes/physics/laureates/1989/ramsey-lecture.pdf /tvb - Original Message - From: Attila Kinali att...@kinali.ch To: time-nuts@febo.com Sent: Tuesday, May 01, 2012 9:47 AM Subject: [time-nuts] Cs beam cavity: why

Re: [time-nuts] Cs beam cavity: why is it U shaped?

2012-05-01 Thread Magnus Danielson
Hi Attila, On 05/01/2012 06:47 PM, Attila Kinali wrote: Moin, For some time now, i'm wondering why the microwave cavity of Cs beam standards is U shaped. Ie why does the Cs beam fly first trough the first subcavity, leaves it, flies a substantial length trough free space, passes the second

Re: [time-nuts] Cs beam cavity: why is it U shaped?

2012-05-01 Thread Rick Karlquist
The tube is like an interferometer. Think of two telescopes spaced apart x meters. It has the resolving power of an x meter diameter telescope. It doesn't have the light gathering power of an x meter telescope. There is sufficient RF power to flip the state of all the Cs atoms, so additional