For the first time, the ILC gradient specification of 31.5 megavolts per metre has been achieved on average across all of the eight cavities assembled in an ILC-type cryomodule. A team at Fermilab reached the milestone earlier this month. It is an achievement for scientists, engineers and technicians at Fermilab and Jefferson Lab in Virginia […]
ILC Ink
A summer intern at Jefferson Laboratory is excited about the ILC – and he’s got the tattoo to prove it.
From a wave function equation to a CERN bubble chamber image, the tattoos physics enthusiasts sport are wide-ranging. But is the ILC represented? Thanks to Gabriel Palacios, a physics engineering student who interned at Jefferson Lab (US) this summer, it is. Palacios, who currently studies at Mexico City’s Metropolitan Autonomous University, had the ILC accelerator […]
From Fermilab Today: Fermilab’s new cavity temperature mapping system commissioned
GDE Executive Committee visits Jefferson Lab
The Global Design Effort Executive Committee visited Jefferson Laboratory in Newport News, Virginia, US earlier this month.
Understanding electron beam halos
Jefferson lab physicist aims to develop large dynamic range diagnostics for electron linacs
Some physicists joke about electrons, saying that you cannot collimate them, you can only make them angry. Collimation is the removal of low-intensity, high-amplitude particles from a particle beam, typically by absorption into a metal. These unwanted particles, which make up what’s known as the halo, could cause high backgrounds in collision data and wreak […]
Pushing the limits with high-voltage electron guns
Jefferson Lab’s electron gun group explores new designs for spin-polarised photoelectron guns
Opposites attract and like charges repel. This simple phenomenon explains why electron beams spread out over space and time, much to the dismay of physicists who need tight particle beams for collision experiments. To counter this phenomenon, known as space charge-induced emittance growth, the electron gun group at Jefferson Lab in the US is pushing […]
The 12-GeV upgrade of Jefferson Lab’s CEBAF accelerator
The US laboratory accelerator is doubling its electron beam energy to address forces at work in protons and neutrons
Why don’t quarks fly solo? Scientists have long observed that these particles, like Noah’s animals or instances of bad luck, always come in twos or threes. Yet nothing in the Standard Model of physics says quarks have to keep each other company. Scientists at Jefferson Laboratory in Newport News, US, will soon be uniquely positioned […]
Impersonating bulk niobium
Jefferson Laboratory scientists ionise niobium to make thin films that may outperform their bulkier sibling.
Superconducting radiofrequency power only runs skin-deep, and accelerator scientists have been taking advantage of the phenomenon’s surface-crawling tendencies with a view to making high-performing, low-cost accelerator cavities. The trick is to manipulate a metal’s top-most layer so that it conducts just like a thick slab of superconducting material. Scientists at Jefferson Laboratory in the US […]