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@INPROCEEDINGS{Breede:166072,
author = {Breede, Heiko and Vu, Lap Van and Sachwitz, Martin and
Grabosch, Hans-Juergen},
title = {{N}ew compact design of a three-dimensional ionization
profile monitor ({IPM})},
reportid = {DESY-2014-01005},
year = {2014},
abstract = {FLASH at DESY in Hamburg is a linear accelerator, which
uses superconducting technology to produce soft x-ray laser
light ranging from 4.1 to 45 nm. To ensure the operation
stability of FLASH, monitoring of the beam is mandatory. Two
Ionization Profile Monitors (IPM) detect the lateral x and y
position changes. The functional principle of the IPM is
based on the detection of particles, generated by
interaction of the beam with the residual gas in the beam
line. The newly designed IPM enables the combined
determination of the horizontal and vertical position as
well as the profile. This is made possible by a compact
monitor, consisting of a cage in a vacuum chamber, two
micro-channel plates (MCP) and two repeller plates with
toggled electric fields at the opposite sides of the MCPs.
The particles created by the FEL beam, drift in a homogenous
electrical field towards the respective MCP, which produces
an image of the beam profile on an attached phosphor screen.
A camera for each MCP is used for evaluation. This indirect
detection scheme operates over a wide dynamic range and
allows the detection of the center of gravity and the shape
of the beam. The final design is presented.},
month = {Sep},
date = {2014-09-16},
organization = {International Beam Position
Instrumentation Conference, Oxford
(United Kingdom), 16 Sep 2014 - 19 Sep
2014},
cin = {ZEU-DLAB / ZEU-XFEL},
cid = {I:(DE-H253)ZEU-DLAB-20130226 /
I:(DE-H253)ZEU-XFEL-20120731},
pnm = {FLASH Beamline BL1 (POF2-54G16) / PETRA Beamline P04
(POF2-54G14)},
pid = {G:(DE-H253)POF2-BL1-20130405 /
G:(DE-H253)POF2-P04-20130405},
experiment = {EXP:(DE-H253)F-BL1-20150101 / EXP:(DE-H253)P-P04-20150101},
typ = {PUB:(DE-HGF)6},
url = {https://bib-pubdb1.desy.de/record/166072},
}