17-18 December 2012
Humboldt-University Berlin, Erwin-Schrödinger-Zentrum
Europe/Berlin timezone
The Helmholtz Initiative for Accelerator Research & Development (ARD) was established to strengthen development in accelerator physics and technology and to ensure international competitiveness. In this framework, accelerator scientists push the limits of today’s technology in a research network of six Helmholtz centers (Deutsches Elektronen-Synchrotron (DESY) in Hamburg and Zeuthen, Helmholtz Zentrum Dresden-Rossendorf (HZDR), Forschungszentrum Jülich (FZJ), Helmholtz Zentrum for Heavy Ion Research GSI in Darmstadt, Karlsruhe Institute for Technology (KIT), and Helmholtz Zentrum Berlin for Materials and Energy (HZB), two Helmholtz institutes, eleven universities, two Max-Planck institutes, and the Max-Born institute.
The topical ARD Unwanted Beam Workshop was focused on the physics and technology associated with unwanted beam generation in modern particle accelerators. Unwanted beam, particles generated and accelerated with wrong properties in space and time, can be the cause for beam loss and therefore increased level of radiation and cause acute and chronic damage of the accelerator components. During the two-day workshop we discussed models, measurements and mitigation strategies for unwanted beam. We concentrated the attention to aspects related to RF and DC photoinjectors and SRF accelerators.
The workshop was organized in sessions related to:
  1. Requirements from ERL/FEL/linac operation on unwanted beam
  2. Unwanted beam dynamics simulation
  3. Handling of photocathodes and substrates. Field emission measurements (DC setups, RF guns)
  4. Solutions for mitigation of dark current and unwanted beam
  5. Roadmap discussion and scope for collaborations and experiments.
The workshop was organized by ARD, HZDR, HU Berlin and HZB. The workshop brought together scientists from universities and Helmholtz centers that are involved in the subtopic 1 (ST1) “Superconducting RF technology and high brightness CW beam sources” of the ARD program. It strengthens collaborative projects at and between the different accelerator facilities. The workshop also served to educate young researchers and students participating in projects and experiments within ST1.

Dates: from 17 December 2012 09:30 to 18 December 2012 16:00
Timezone: Europe/Berlin
Location: Humboldt-University Berlin, Erwin-Schrödinger-Zentrum
Rudower Chaussee 26
12489 Berlin
Room: 0'119