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          Institute: MPI für Kernphysik     Collection: Physics of Quantum Dynamics in Atomic Fragmentation     Display Documents

ID: 522364.0, MPI für Kernphysik / Physics of Quantum Dynamics in Atomic Fragmentation
Flexible Core Masking Technique for Beam Halo Measurements with High Dynamic Range
Authors:Egberts, J.; Artikova, S.; Welsch, C. P.
Date of Publication (YYYY-MM-DD):2009
Title of Journal:Joint Accelerator Conferences Website (JACoW)
Volume (in Journal):DIPAC 2009
Start Page:237
End Page:239
Sequence Number:TUPB30
Physical Description:electronic resource
Name of Conference/Meeting:9th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators (DIPAC 2009)
Place of Conference/Meeting:Basel, Switzerland
(Start) Date of Conference/Meeting
End Date of Conference/Meeting 
Review Status:not specified
Audience:Experts Only
Abstract / Description:The majority of particles in a beam are located close to
the beam axis, called the beam core. However, particles
in the tail distribution of the transverse beam profile can
never be completely avoided and are commonly referred to
as beam halo.
The light originating from or generated by the particle
beam is often used for non- or least destructive beam profile
measurements. Synchrotron radiation, optical transition,
or diffraction radiation are examples of such measurements.
The huge difference in particle density between the
beam core and its halo, and therefore the huge intensity ratio
of the emitted light is a major challenge in beam halo
In this contribution, results from test measurements using
a flexible core masking technique are presented indicating
way to overcome present limitations. This technique is
well-known in e.g. astronomy, but since particle beams are
not of constant shape in contrast to astronomical objects,
a quickly adjustable mask generation process is required.
The flexible core masking technique presented in this paper
uses a micro mirror array to generate a mask based on
an automated algorithm.
External Publication Status:published
Document Type:Conference-Paper
Affiliations:MPI für Kernphysik/Independent Research Groups/Quantum Systems and Advanced Accelerator Research (C. Welsch)
External Affiliations:Cockcroft Institute and University of Liverpool, UK
Identifiers:URL:http://accelconf.web.cern.ch/AccelConf/d09/papers/... [open access]
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