Beams Document 1239-v1

DocDB Home ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Topics ] [ List Events ]

EXPERIENCE WITH THE 1.7 GHZ SCHOTTKY PICK-UPS IN THE TEVATRON - CONFERENCE POSTER

Document #:
Beams-doc-1239-v1
Document type:
Poster
Submitted by:
Andreas Jansson
Updated by:
Andreas Jansson
Document Created:
30 Jun 2004, 12:32
Contents Revised:
05 Jul 2004, 09:24
Metadata Revised:
05 Jul 2004, 09:24
Viewable by:
  • Public document
Modifiable by:
  • Same as Viewable by

Quick Links:
Latest Version

Other Versions:
Beams-doc-1239-v0
30 Jun 2004, 12:32
Abstract:
During a 2003 shutdown, new high-frequency Schottky pick-ups were installed
in the Tevatron. These devices operate at 1.7 GHz (harmonic ~36000 of the
revolution frequency) and can in principle be used to measure tunes,
chromaticities, momentum spread and transverse emittances of individual
bunches. Only the transverse signal is used, as the longitudinal is dominated
by coherent signal. The default mode of operation during a store is to
sequentially acquire and analyze frequency data from different sets of
bunches in the machine. This function is performed by an Open Access Client (OAC)
written in Java/C++, running in the background. The resulting fit parameters
are datalogged and can also be plotted in "real time" during the store. With
an alternative setup, data from select bunches can be acquired continuously
during the entire ramp (and squeeze), for analysis off-line. This paper describes
the evolution, current status and performance of the acquisition and analysis
software, and presents measurements with comparison to predictions and other
measurement techniques. One example of such a measurement is the variation of
beam-beam tune shift as a function of intensity and bunch position within a train.
Files in Document:
Publication Information:
Poster for EPAC04, Lucerne, Switzerland
DocDB Home ]  [ Search ] [ Last 20 Days ] [ List Authors ] [ List Topics ] [ List Events ]

DocDB Version 8.8.9, contact Beams Document Database Administrators