40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  West Bridge EE Shop B248, Page 1 of 1  Not logged in ELOG logo
ID Date Author Type Category Subject
  11   Mon Aug 23 15:05:33 2021 Ian MacMillanSummaryEquipment transfer/loanFundamentals of Interferometric Gravitational Wave Detectors (2nd ed.) by Saulson (Reply to update)

I'm borrowing this: Fundamentals of Interferometric Gravitational Wave Detectors (2nd ed.) by Saulson

  10   Mon Aug 23 15:02:29 2021 Ian MacMillanSummaryEquipment transfer/loanFundamentals of Interferometric Gravitational Wave Detectors (2nd ed.) by Saulson (Reply to update)

Fundamentals of Interferometric Gravitational Wave Detectors (2nd ed.) by Peter R. Saulson. Loan sheet

Reply to this entry to update the loan status/location

  9   Wed May 19 12:01:56 2021 AidanSummaryEquipment transfer/loanGrounding and Shielding Techniques by Morrison. Loan sheet (reply to update).

Grounding and Shielding Techniques by Morrision. Loan sheet

Reply to this entry to update the loan status/location

  8   Wed May 19 11:56:06 2021 AidanSummaryEquipment transfer/loanBuilding Scientific Apparatus by Moore. Loan sheet (Reply to update).

Building Scientific Apparatus by Moore. Loan sheet

Reply to this entry to update the loan status/location

  7   Wed Apr 21 16:47:08 2021 AidanNotesDocumentationAdded books to the EE Shop library

The following books were added to the EE shop. Do not take them without first returning them.

  • Morrison, Grounding and Shielding Tehcniques, 4th Edition
  • Hobbs, Building electro-optical systems: making it all work, 2nd edition

 

Attachment 1: IMG_2199.jpg
IMG_2199.jpg
Attachment 2: IMG_2200.jpg
IMG_2200.jpg
  6   Wed Apr 14 15:22:53 2021 AidanSummaryOrganizationTest location elog entry

Reply from my phone. 

Quote:

Adding a QR code for this elog entry.

 

  5   Wed Apr 14 15:21:02 2021 AidanSummaryOrganizationTest location elog entry

Adding a QR code for this elog entry.

Attachment 1: Screen_Shot_2021-04-14_at_3.21.39_PM.png
Screen_Shot_2021-04-14_at_3.21.39_PM.png
  4   Tue Mar 16 15:04:10 2021 aaronHowToActive Componentslearned how to phase lock marconi to RF signal

Chub dropped off a repaired Marconi 2023A signal generator, which I'm phase locking to a function generator to test out how it will go in my three corner hat measurement. Perhaps I could synchronize between the Moku phasemeter frequency estimate (of f_13, f_23) and Marconi frequency estimate (f_12) offline by introducing a time offset to f_12 and maximizing the correlation with f_13 and f_23?

Here's what I did. See attachment 1 for configuration. 

  1. Set the function generator for 27.1828 MHz sine at 0 dBm, to simulate my beat note signal
  2. Select an appropriate mixer and low pass filter. I have a BNC connected LP at 11 MHz that will work, and use a mixer that's for 0.1-500 MHz.
  3. Set the Marconi carrier to a few kHz away from the function generator (27.18 MHz) and 10 dBm RF power (so 7 dBm gets to my mixer after monitoring half the power)
  4. Use externally driven frequency modulation with DC coupling. With no amplifier in the loop, I found the loop is stable up to the maximum 200 kHz/Vrms frequency deviation (modulation depth). With an SR560 and G=100, the PLL locked at 5 kHz/Vrms and was stable up to 11-12 kHz/Vrms.
  5. The LF output on the Marconi is the frequency noise of the RF signal (for example, from the function generator) in units of the FM deviation. 
Attachment 1: IMG_0332.jpg
IMG_0332.jpg
  3   Fri Mar 12 13:08:48 2021 aaronNotesPassive Components 

I'm ordering a few electronic parts. Please add to this list if there's more I should pick up from DigiKey for EE. 

Also came in today to look for connectors, heat pads, heat sinks, box, etc for putting PSOMA's fiber optics in a box (+ EOM RF / DC bias).

  2   Thu Mar 11 22:08:22 2021 aaronDailyProgressPassive Componentslow frequency currents

I measured the current noise of our Thorlabs ITC502 laser driver today.

While in EE, I

  • started to make a box to hold a low temperature coefficient resistor and some connectors for low frequency current sensing
  • Noticed we are low on AA batteries (I found 1), and while we have AA and 9V battery holders, we don't have the AAA variety. I started a digikey order, and will ask around for more that's needed in EE.
  1   Wed Mar 3 11:30:13 2021 ranaDailyProgressOrganization 

b

ELOG V3.1.3-