Dear Josh, My understanding is that Andrey did not apply any probe correction to this data. The whole point was to keep it as simple as possible. Attached is a s...
Band 3 beam scans (March 2010) Initial setup: March 2, 2010 * The serial number of the band 3 cold cartridge is SN 08. Here is its PAI report. * Adjusted ...
October 2009 band 3 beam scans * link to the raw data shown here Using Band 7 BEAm Scanner Test source (BEAST) without the multiplier * Shows bad leakage ...
Methods to measure beam squint at the FEIC Click here to scroll down to the calibration procedure (Dec 2010) Background * The NA FEIC has installed a switch t...
Dear Charles, You asked for comments on this data. Overall it looks pretty good to me. I am not convinced that all the lower level structure you can see in the ...
FEIC Beam Scanning meeting 31 July 2008 Attendees * Geoff, Sri, Todd, Josh, Antonio (NTC) * Richard, Fred (phone) Agenda 1. Status of compressor and ...
FEIC beam scanning meeting 26 Aug 2008 Details: * Date/Time: 9:30 AM EDT = 13:30UT on 26 Aug 2008 * Attendees: Josh, Antonio, Geoff (NTC); Fred and Todd ...
FEIC Beam Scanning meeting 28 August 2008 Details * Date/time: 28 Aug 2008 14:00 EDT = 18:00 UT * Attendees: Josh, Antonio, Geoff, Sri (NTC); Fred and T...
Thanks to all who were able to come to today's meeting. An incomplete list for the coming week: * Geoff and Josh will finish up the Band 9 open ended waveguide...
Summary from Richard (Responses from Geoff and Todd on Oct 7 written in blue.) I visited the NA FEIC on Friday 26th Sept 2008. Here are some notes. 1) Calculatio...
July 13, 2012 Details * Location: NTC 200 * Attendees: Morgan, Todd, Saini Minutes 1) Question about whether the attenuators are being set correctly duri...
Dear Josh and Geoff, Next message will be a cleaned up version of my spread sheet. The main purpose was to gather things together better, but I have added a few f...
Date: Fri, 31 Oct 2008 20:48:31 0000 From: Richard Hills To: Todd R. Hunter , alma feic@nrao.edu Subject: Spreadsheet Here is a version with the beam squint cal...
One Dimensional beam cuts and Two Dimensional beam maps to measure repeatability of the FEIC NSI scanner Schottky receiver Experimental setup * Use the room ...
Nominal beam center coordinates * Copied from Appendix C of ALMA 40.00.00.00 123 A PRO * The next to final column is from Fig 1.3 in FEND 40.01.00.00 004 A ...
Dear Josh et al., I have made the obvious comparison of this Far Field data set with the one that Andrey sent. Our understanding is that Andrey's data set is jus...