Section Navigation

Past Events, Conferences and Workshops

2004

29AUG04 - 3SEP04
FEL 2004 Conference
More information about the 26th International Free-Electron Laser Conference is available here.

16AUG04 - 20AUG04
LINAC 2004 Conference
Conference details available at the LINAC Conference Website

May 28, 2004 | 13:00 | 3-174 Knudsen
Physics of high energy beams in the Tevatron
Tanaji Sen
Fermi National Accelerator Laboratory
The Tevatron at Fermilab is the world's highest energy collider. Counter-rotating beams of protons and anti-protons are made to collide at two experiments CDF and D0 for high energy physics research. The two beams display a rich array of phenomena while circulating in the Tevatron. I will survey recent observations of some phenomena including nonlinear dynamics, collective motion and instabilities, beam-beam interactions, intra-beam scattering and Schottky spectra. I will discuss the advances in our understanding of these phenomena that have led to better control of beam losses and improved the luminosity. The next steps on the road to higher luminosity and future experiments will be discussed.

20JUN04 - 26JUN04
AAC Workshop 2004
More information about the 11th annual Advanced Accelerator Concepts Workshop 2004 can be found at this website

28JUN04 - 01JUL04
31st IEEE International Conference on Plasma Science
To find out more about this three-and-a-half day conference on plasma science visit the Official ICOPS Website

21JUN04 - 02JUN04
US Particle Accelerator School
USPAS sponsored by the University of Wisconsin, Madison held in Madison, Wisconsin.

18MAY04 - 19MAY04
Department of Energy Review

Wednesday 21APR04

Halo formation mechanisms and its mitigation in the SNS accelerator system

Dong-o Jeon

ORNL

Being a high intensity proton accelerator of 1.4MW beam power, stringent beam loss < 1W/m is required for the Spallation Neutron Source (SNS) accelerator system. A major source of beam loss will be halo particles. Extensive studies have been carried out to study halo formation mechanisms under an intense space charge force. Besides mismatch and envelope instability, a few new mechanisms became known since 1999. One mechanism is halo formation through 2nx-2ny=0 resonance supported by the space charge potential. The other is halo formation due to large beam eccentricity, first identified in the Medium Energy Beam Transport of the SNS linac. This new mechanism was verified experimentally through a series of emittance measurements performed during the Drift Tube Linac tank 1 commissioning. This was a rare opportunity to verify a halo formation mechanism through emittance measurements. As the model predicted, the emittance measurements clearly showed a visible reduction in the halo as well as a significant reduction in the rms emittance when the proposed round beam optics is employed. Also the Drift Tube Linac commissioning results are presented.


07APR04 at 2PM

Knudsen Hall | Room 6-129

Vacuum Laser Acceleration of Charged Particles

Eric R. Colby

SLAC

Developing more compact, power efficient, reliable and economical means of accelerating charged particles is essential for continued progress in developing higher energy e+e- colliders. The extreme electric fields produced by lasers have long made them attractive for particle acceleration, but the short wavelength and inherent transverse polarization of free space waves have made realizing practical coupling schemes difficult. Lasers have also suffered from relatively low power efficiency, and phase-locking multiple lasers was not possible. Recent technical advances in solid-state lasers have greatly improved power efficiency, and optical-phase-locking has now been demonstrated. The challenge of producing structures or other means to efficiently couple energy from lasers to charged particles remains, however. I will survey some of the proposed techniques and their respective technical challenges. I will describe in detail efforts at SLAC to develop power-efficient photonic bang gap structures by standard semiconductor and fiber-drawing processes, and plans for future development.


22MAR04 - 26MAR04
APS March Meeting 2004
For more information about the annual APS meeting to be held in Montreal, visit the APS website

02MAR04
CPR and First Aid Training
Group wide CPR and First Aid Training from the Red Cross. Held in the Student Lounge (Kn 2-222) from 10AM - 4:00PM. More information and curriculum are available from the Red Cross.

02FEB04
EPAC Abstracts Due
The European Particle Accelerator Conference abstracts are due on February 2.

26JAN04 - 29JAN04
Photonics West Conference and Exhibits
The largest show of its kind. Details are available at the conference web site

19JAN04 - 30JAN04
US Particle Accelerator School
USPAS sponsored by the College of William and Mary in Williamsburg, Virginia to be held.

DOE Review
THE DOE REVIEW HAS BEEN DELAYED UNTIL ABOUT APRIL
A PBPL party was held on Tuesday 28JAN04 instead!

19JAN04 - 20JAN04
LCLS Workshop at UCLA
The Linac Coherent Light Source will be holding a 2 day workshop on electron beam diagnostics, x-ray diagnostics, beam-based diagnostics, alignment, and commissioning goals. More details can be found at the workshop site.

06JAN04
DOE SBIR Proposals are Due
The Department of Energy Small Business Innovation Research Phase I proposals are due on January 6, 2004.

2003

May 12-16
PAC 2003
The 2003 Particle Accelerator Conference.
PAPERS: The PBPL PAC 2003 preprints are now posted on this site.

September 8-12
FEL 2003
25th International Free Electron Laser Conference, .
PAPERS: The PBPL FEL 2003 preprints are now available.

July 7-11
Oxford Beam Dynamics Workshop
Another ICFA Advanced Beam Dynamics Workshop

2002

July 1-6
Joint ICFA Advanced Accelerator and Beam Dynamics Workshop
The Physics & Applications of High Brightness Electron Beams. Chia Laguna, Sardinia .

June 22 - 28
10th Advanced Accelerator Concepts Workshop
AAC hosted by UCLA at Oxnard, CA, USA.

2001


2000

September 10-15
The 19th ICFA Advanced Beam Dynamics Workshop on Future Light Sources
Physics of and Science with The X-ray Free-Electron Laser. Arcidosso, Italy.