Re: 12 kHz line
Emery, Louis <[email protected]>
Wed 9/22/2021 12:36 AM
To: Dufresne, Eric <[email protected]>
Cc: Narayanan, Suresh <[email protected]>; Zhang, Qingteng <[email protected]>
We don't see the same lines.
We see in the tune signals from a stripline (searching for high frequencies) a line at 21.5 kHz in y plane,
and lines at 7.0, 18.7, 37 kHz in x plane. But not at 12 kHz.
From rf bpms (searching for lower frequencies) we have 60, 120 and 147 Hz lines.
but none at 20 or 40 Hz.
Louis Emery
Senior Physicist
Advanced Photon Source
Argonne National Laboratory
9700 South Cass Avenue
Argonne, IL 60439
From: Dufresne, Eric <[email protected]>
Sent: Tuesday, September 21, 2021 11:37 PM
To: Emery, Louis
Cc: Narayanan, Suresh; Zhang, Qingteng
Subject: 12 kHz line
Hi Louis,
hope you are doing well.
My colleague Qingteng shared with Suresh and I this data.
He was puzzled with the 20-60 Hz lines which we do not typically see.
I suspect they might be caused by us.
He also noticed something at 12 kHz. Anything from your end at this high a frequency?
Cheers,
Eric |