Lab Book 2014_05_22 Logistics and the Water Chiller

Lab Book 2014_05_22 Hamilton Carter

Summary

Worked a little bit on experiment planning today. Most of the rest of the day was spent in meetings. What time was left was spent preparing the water circulation system for the magnet power supply and the magnet.

Water Chiller

Specifications

Capacity: 8 gpm at 60 psi maximum pressure

Reservoir volume: 1.67 gallons

Drained the pipes heading into the sink area. Working on replacing the after filter once I track down a filter wrench.

The cooling water will eventually wind up in the magnet power supply shown below. All the large black tubes carry cooling water.

Magnet Requirements

Cooling: 2 GPM at 40 PSI

Temperature Rise: 20 C average

Magnet Power Supply Requirements

Cooling: 0.5 GPM at 40 PSID nominal

Output: 50 A at 40 V DC

The above specification are to be copied to a central specifications and status page to make them easier to find and track.

Experiment Background Data

Magnetic fields affect the perfromance of photomultiplier tubes like the one used in the scintillation detector. Background spectrums will be collected for the slow and fast magnets being operated in the same mode they will be operated in the experiment, but with no sample present. This should allow us to subtract off the effects due to just the magnets.

Comments

The Valentine's Day Magnetic Monopole

There's an assymetry to the form of the two Maxwell's equations shown in picture 1. While the divergence of the electric field is proportional to the electric charge density at a given point, the divergence of the magnetic field is equal to zero. This is typically explained in the following way. While we know that electrons, the fundamental electric charge carriers exist, evidence seems to indicate that magnetic monopoles, the particles that would carry magnetic 'charge', either don't exist, or, the energies required to create them are so high that they are exceedingly rare. That doesn't stop us from looking for them though! Keeping with the theme of Fairbank[1] and his academic progeny over the semester break, today's post is about the discovery of a magnetic monopole candidate event by one of the Fairbank's graduate students, Blas Cabrera[2]. Cabrera was utilizing a loop type of magnetic monopole detector. Its operation is in...

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

Now available as a Kindle ebook for 99 cents ! Get a spiffy ebook, and fund more physics The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems , there seem to be fewer explanations of the procedure for deriving the conversion, so here goes! What do we actually want? To convert the Cartesian nabla to the nabla for another coordinate system, say… cylindrical coordinates. What we’ll need: 1. The Cartesian Nabla: 2. A set of equations relating the Cartesian coordinates to cylindrical coordinates: 3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system: How to do it: Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables. The chain ...

More Cowbell! Record Production using Google Forms and Charts

First, the what : This article shows how to embed a new Google Form into any web page. To demonstrate ths, a chart and form that allow blog readers to control the recording levels of each instrument in Blue Oyster Cult's "(Don't Fear) The Reaper" is used. HTML code from the Google version of the form included on this page is shown and the parts that need to be modified are highlighted. Next, the why : Google recently released an e-mail form feature that allows users of Google Documents to create an e-mail a form that automatically places each user's input into an associated spreadsheet. As it turns out, with a little bit of work, the forms that are created by Google Docs can be embedded into any web page. Now, The Goods: Click on the instrument you want turned up, click the submit button and then refresh the page. Through the magic of Google Forms as soon as you click on submit and refresh this web page, the data chart will update immediately. Turn up the:...

Copasetic Flow

Search This Blog