Single-electron beam observed in IOTA for the first time

Scientists and engineers stand by screens that display IOTA activity. The photo was taken on Oct. 31, 10:15 p.m., when three electrons were circulating in the machine. Aleksandr  Romanov, left, points to the computer screen on the left, where a camera image of the beam was visible. The screen on the right shows one of the first plots of the discrete steps. Photo: Giulio Stancari

Just two months ago, in September 2018, the IOTA ring was successfully commissioned, and the program of the advanced beam physics studies has since begun. One of the most interesting scientific topics at IOTA will be studies of beams made of a single electron.

By Vladimir Shiltsev and Giulio Stancari

You can read the article here.

An aside about listening to this podcast.

I have gotten some feedback that some of the articles are a little hard to follow.  Indeed, some of them are.  My suggestions to help you understand these podcasts better are:

  1. Do not speed up the podcast on your client player.  In fact, slowing them down a little will give you an opportunity to digest some of the more difficult ideas as they stream into your ears
  2. Read along!  Since you are reading this, you have found the WordPress site where this podcast originates. So you can click on the link above and read the article.

Superconducting film technology leads to record performance for low-frequency SRF cavity

A low-frequency, single-cell cavity is under preparation niobium-tin coating. Photo courtesy of Sam Posen

Superconducting radio-frequency (SRF) cavities are the “muscle” of many modern particle accelerators. By cooling these devices to cryogenic temperatures (usually around 2 Kelvin, or minus 456 degrees Fahrenheit) and inputting electric power, SRF cavities increase the energy of beams of charged particles passing through them. Making cavities out of superconducting materials dramatically increases their efficiency (represented by a cavity’s quality factor, or Q), allowing them to accelerate beams to high energies over short distances, without leaving long cool-down times between particle beam pulses.

By Sam Posen .

Read the article here.