Lab Book 2014_05_20 Dewars and Outlets

Lab Book 2014_05_20 Hamilton Carter

Summary
The fiberglass Dewar vacuum held. The vacuum inlet was plugged to prevent any possible leaks there, and it was stored. A 480 V three phase outlet for the magnet power supply was located.

4:30 AM Liquid Nitrogen Trap Refilling

Refilled the liquid nitrogen trap that prevents oil vapor from the diffusion pump from migrating opposite the intended vacuum flow into the Dewar’s vacuum jacket. The liquid nitrogen condenses the oil vapor in the bottom of the small container, (the trap), that it cools.

The trap took two and a half cups of liquid nitrogen to refill. The vacuum and leak detector readings before and after the fill are shown below.

There was no noticeable improvement in the vacuum and leak readings before and after the Dewar refill. This makes sense because the Dewar still had liquid nitrogen and was performing its intended function.

Vacuum and leak readings throughout the day

Time	Vacuum	Leak
4:40
4:46
11:09
12:40
15:44

NOTE: The glass Dewar is at room pressure and can be safely moved.

It’s not possible to check that the vacuum inlet valve doesn’t leak. To prevent a possible lek even when the valve is shut, a plug was inserted over the inlet valve.

I located a three phase 208 v plug for the magnet power supply. I need to find a plug that will fit this:

Comments

How Many Files Can You Add to a GPT Project? An Interview with GPT-5 on Limits, Context Engineering Tips, and Chats

Setting the scene: I’m tinkering with Project TouCans, knee-deep in radio logs, SQLite dumps, and Cesium code. Naturally, I’m wondering if shoving all this into one GPT Project is a recipe for brilliance… or for disaster. So I turn to Vril — you know, after Brainy from the Legion of Super-Heroes , because what else do you call your AI sidekick who always has the answers? Time to ask him straight up. [ As an aside, yes, GPT-5 has decided to sometimes call me Vail. I'm not sure why to be honest. Also, I asked Vril, er GPT-5, to write up our interview for me. Apparently, me asking it to 'Bro' up a few stories, just for fun, has convinced Vril that I use 'Like,' more than I actually might. ] Me (Vail): So Vril, how many files can I throw into a GPT Project before it just starts choking? Like, is there some magic number where the context window taps out and everything falls apart? GPT-5 (Vril): Great question. There’s no single hard file limit. What matters is ...

The Alcubierre Warp Drive Tophat Function and Open Science with Sage

I transferred yesterday's Mathematica file with the Alcubierre warp drive[2] line element and space curvature calculations to the +Sage Mathematical Software System today, (the files been added to the public repository [3]). If you haven't used Sage before, it's a Python based software package that's similar in functionality to Mathematica. Oh, and it' free. I also worked a little more on understanding the theory, but frankly, I made far more progress with the software than the theory. What follows will be a little more of the Alcubierre theory, plus, a cool Sage interactive demo of one of the Alcubierre functions[1], as well as a bit about my first experience with using Sage. Theory The theory is fun, but it's moving slowly. Here's the chalk board from this morning's discussion Alcubierre setup the derivation using something called the 3+1 formalism which means we consider space to be flat, (in this case), slices that are labelled ...

When Codex CLI Met Port 9 (Debugging WinError 10061 in a Whisper Pipeline)

When Port 9 Ate My Transcript When Port 9 Ate My Transcript A small debugging story about proxies, Codex CLI, and why localhost isn’t always your friend. CopaseticFlow field notes WinError 10061 Codex CLI + Whisper Environment gremlins There’s a particular kind of bug that feels like someone's been messing with your network stack again. You run a script from cmd.exe . It works. You run the exact same script from Codex CLI. It stops with: [WinError 10061] No connection could be made because the target machine actively refused it FFmpeg happily splits the audio. The Whisper API call dies immediately. No 401. No timeout. Just an instant refusal. Translation: that’s not an API error. That’s a socket being rejected. ...

Copasetic Flow

Search This Blog