Abstracts Brochure - CERN

THPCH — Poster Session 29-Jun-06 16:00 - 18:00
Portable SDA (Sequenced Data Acquisition) with a Native XML Database
SDA is a general logging system for a repeated,
complex process. It has been used E.S. McCrory, T.B. Bolshakov (Fermilab)
as one of the main logging facility for the
Tevatron Collider during Run II. It creates a time abstraction in terms understood by everyone and allows for common
time tick across different subsystems. In this article we discuss a plan to re-implement this highly successful FNAL
system in a more general way so it can be used elsewhere. Latest technologies, namely a native XML database and
AJAX, are used in the project and discussed in the article.
EPICS Device Database Development at the ALS
The original ALS control system implemented
a naming convention for grouping H. Nishimura, G.J. Portmann, C. Timossi, M.E. Urashka (LBNL)
related I/O channels into ’devices’. In addition
to the naming convention, an API for controlling the hardware at the device level was developed. We are now
migrating accelerator controls to EPICS which maps well to the individual I/O channels but not to our notion of
device. To preserve device grouping, we move the association between a device and its component I/O channels
from its current location in the run-time database into a relational database. This paper describes our recent effort of
establishing the device database by incorporating device information into the existing relational database system using
MySQL. The API developed to access the combination of the EPICS runtime database and this relational database
for machine control are discussed including implementations for C/C++, Delphi, Matlab, Python and PHP.
Design and Implementation of Analog Feedback Damper System for PSR Electron-proton
Instability at the LANL PSR
The PSR (Proton Storage Ring) at LANSCE
has observed an E-P (electron-proton) instability.
A wideband analog feedback damper
system was designed and implemented that
has shown it is possible to correct this instability.
The damper system consists of two 180
C. Deibele, S. Assadi, V.V. Danilov, S. Henderson, M.A. Plum,
C. Sibley III (ORNL) S. Breitzmann, S.-Y. Lee (IUCF) J.M. Byrd
(LBNL) J.D. Gilpatrick, R.J. Macek, R.C. McCrady, J.F. Power, J.
Zaugg (LANL)
degree hybrids, low level amplifiers, a delay line, comb filter, power amplifiers, and adjustable delay lines. The system
bandwidth is about between 10 -300 MHz, and was developed and implemented in stages showing improvement in
the e-p threshold of the buncher voltage. The system takes advantage of fiber optic technology for delays as well as
for the comb filter. A system description and some measurement results are presented.
SNS Injection and Extraction Kicker Control System Integration, Commissioning, and Performance
The Spallation Neutron Source (SNS) injection
and extraction kicker systems were designed
by Brookhaven National Laboratory
J.Y. Tang, M.A. Plum, K.R. Rust, D.H. Thompson (ORNL) S. Peng
(SLAC)
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