Pseudo Single Bunch Workshop

LOGO

When: Wednesday, June 28, 2006
Where: LBNL Building 6-2206 Conference Room

Organizers: Greg Portmann x4105 (GJPortmann@lbl.gov)
Bob Schoenlein x6557 (RWSchoenlein@lbl.gov)

Agenda

Morning Session Talks: 9:00 AM - 11:30 AM

The times listed below are rough estimates. Most of the talks will be 15-20 minutes. 30 minutes is
provided for discussion. The talks are actually more of a backdrop to generate discussion on requirements.

09:00 to 09:30 - Janos Kirz - Introduction
09:30 to 10:00 - Greg Portmann - Overview and engineering effort
10:00 to 10:30 - Bob Schoenlein - Femtosecond experiments
10:30 to 10:45 - Break
10:45 to 11:15 - Peter Fischer - Time resolved magnetic X-ray microscopy: New Opportunities and Challenges
11:15 to 11:45 - Simon Clark - Probing the shocked state using single bunches of ALS x-rays
11:45 to 12:15 - Andreas Scholl - Pseudo single bunch for streak camera and microscopy experiments

Afternoon Group Session: 1:00 AM - 2:30 PM
Goals of group session

User requirements: repetition rate, required beam separation, contamination, etc.
Near term experiments using the test kicker system
Future experimental goals

Introduction

Devising a way to increase the amount of effective single bunch time at the ALS is quite interesting for a number of users at the ALS. Last year Janos Kirz asked the physics group to explore the possibility of creating a pseudo single bunch operation by physically separating the cam-shaft bunch from the rest of the bunch train. Kicking the cam-shaft bunch on a different closed orbit has some engineering challenges, however, it appears to be feasible. A more difficult task is to determine the exact user requirements and quantify any negative effects it may have on other users. To test the concept, a 1.5 MHz kicker magnet is being designed and built to be installed in December 2006.

Workshop

In order to explore the how this potentially new mode of operation could be used by the ALS user community a one day workshop was held on Wednesday, June 28, 2006. This project is quite novel and it has quite a few challenges so it will require good user support for it to be successful. The workshop was quite helpful for determining user specifications as well as assessing interest and benefits to the ALS user community.

Attended:
Janos Kirz
Roger Falcone
Ben Feinberg
Dave Robin
Christoph Steier
Bob Schoenlein
Nora Berrah
Andreas Scholl
Peter Fischer
Simon Clark
Phil Heimann
Ernie Glover
Tony Warwick
Tony Young
Jiro Italani
Timur Osipov
Vanessa Brown
Munira Khalil
Chris Joziak
Daniel Rolles
Marc Hertlein
Sun Lee

GJPortmann@lbl.gov