Beams Document 1820-v2

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AN IONIZATION PROFILE MONITOR FOR THE TEVATRON

Document #:
Beams-doc-1820-v2
Document type:
Proceeding
Submitted by:
Andreas Jansson
Updated by:
Andreas Jansson
Document Created:
12 May 2005, 05:50
Contents Revised:
13 May 2005, 16:33
Metadata Revised:
13 May 2005, 16:33
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Beams-doc-1820-v1
12 May 2005, 05:50
Abstract:
Primarily to study emittance blowup during injection and ramping, an ionization profile monitor
has been developed for the Tevatron. It is based on a prototype installed in the Main Injector,
although with extensive modifications. In particular, the electromagnetic shielding has been
improved, the signal path has been cleaned up, and provisions have been made for an internal
electron source. Due to the good Tevatron vacuum, a local pressure bump is introduced to increase
the primary signal, which is then amplified by a microchannel plate and detected on anode strips.
For the DAQ, a custom ASIC developed for the CMS experiment is used. It is a combined charge
integrator and digitizer, with a sensitivity of a few fC, and a time-resolution that allows
single bunch measurement. Digitization is done in the tunnel to reduce noise. Preparations for
detector installation were made during the long 2004 shutdown, with the installation of magnets,
vacuum chambers, vacuum pumps and cabling. The actual detector will be installated
during the fall 2005 shutdown. This paper describes the design of the detector and associated
electronics, and presents various bench test results.
Files in Document:
Topics:
None
Associated with Events:
PAC 2005 held from 16 May 2005 to 20 May 2005 in Knoxville, Tennessee
Publication Information:
FERMILAB-CONF-05-170-AD-CD-E.
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