Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Compact Bone01:27

Compact Bone

16.8K
Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
16.8K
Compacting Factor test01:22

Compacting Factor test

606
The compacting factor test is a method used to assess the workability of concrete. It is  especially suitable for concrete mixes containing aggregates up to one and a half inches in size. This test involves specialized equipment consisting of two truncated cone-shaped hoppers and a cylinder, all with polished interior surfaces to minimize friction.
The procedure begins by placing concrete into the upper hopper without any compaction. Once filled, the bottom door of this hopper is opened,...
606
Accelerators01:17

Accelerators

292
Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...
292
Average Acceleration01:30

Average Acceleration

14.4K
The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
14.4K
Instantaneous Acceleration01:16

Instantaneous Acceleration

23.3K
Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
23.3K
Acceleration Vectors01:30

Acceleration Vectors

23.3K
In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
23.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A Deep Bidirectional LSTM Model Enhanced by Transfer-Learning for the Classification of Peripheral Arterial Blood Pressure Waveforms.

IEEE transactions on bio-medical engineering·2026
Same author

Resonant excitation of plasma wakefields with a train of relativistic particle bunches.

Physical review. E·2025
Same author

Analysis of the Blowout Plasma Wakefields Produced by Drive Beams with Elliptical Symmetry.

Physical review letters·2025
Same author

Femtosecond laser-induced plasma filaments for beam-driven plasma wakefield acceleration.

Physical review. E·2025
Same author

Measurement of femtosecond incoherent XUV pulses using shot-noise-driven fluctuations in plasma betatron sources.

Physical review. E·2025
Same author

Erratum: Low-cost architecture for iron-based coated conductors.

iScience·2025

Related Experiment Video

Updated: Feb 12, 2026

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices
04:45

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices

Published on: November 1, 2007

35.0K

Compact and tunable focusing device for plasma wakefield acceleration.

R Pompili1, M P Anania1, E Chiadroni1

  • 1Laboratori Nazionali di Frascati, Via Enrico Fermi 40, 00044 Frascati, Italy.

The Review of Scientific Instruments
|April 2, 2018
PubMed
Summary

Researchers developed a compact, tunable focusing system using permanent-magnet quadrupoles for particle beam-driven plasma wakefield acceleration. This system enables the creation of ultra-short electron bunches crucial for compact accelerator development.

More Related Videos

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

16.1K
Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device
08:58

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Published on: December 25, 2015

16.7K

Related Experiment Videos

Last Updated: Feb 12, 2026

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices
04:45

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices

Published on: November 1, 2007

35.0K
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

16.1K
Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device
08:58

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Published on: December 25, 2015

16.7K

Area of Science:

  • Accelerator Physics
  • Plasma Physics
  • Particle Beam Technology

Background:

  • Plasma wakefield acceleration (PWFA) offers a path beyond conventional radio-frequency (RF) accelerators for compact accelerator development.
  • Particle beam-driven PWFA requires ultra-short electron bunches with minimal spot sizes to maximize accelerating gradients and preserve beam quality.
  • Achieving these tight transverse beam sizes necessitates a focusing system with a short focal length.

Purpose of the Study:

  • To develop a compact and tunable focusing system for particle beam-driven plasma wakefield acceleration experiments.
  • To enable the generation of the required ultra-short electron bunches with precise transverse control.

Main Methods:

  • Design and development of a focusing system comprising three small-bore permanent-magnet quadrupoles.
  • Utilized a fixed field gradient of 520 T/m.
  • Achieved tunability by adjusting the relative positions of the quadrupoles with nanometer resolution.

Main Results:

  • Successfully designed a compact and tunable magnetic focusing system.
  • Demonstrated beam-dynamics simulations indicating the system's effectiveness for plasma acceleration experiments.
  • Presented preliminary results validating the magnetic design and focusing capabilities.

Conclusions:

  • The developed permanent-magnet quadrupole system provides a viable solution for achieving the stringent focusing requirements in particle beam-driven PWFA.
  • The system's tunability and compact design make it suitable for integration into experimental facilities like SPARC_LAB.
  • This advancement contributes to the ongoing development of compact and powerful particle accelerators.