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in creator/contributor: "Timossi, C."

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Superhilac real-time velocity measurements

Phase probes have been placed in several external beam lines at the LBL heavy ion linear accelerator (SuperHILAC) to provide non-destructive velocity measurements independent of the ion being accelerated. The existing system has been improved to provide the following features: a display refresh rate better than twice per second, a sensitive pseudo-correlation technique to pick out the signal from the noise, simultaneous measurements of up to four ion velocities when more than one beam is being … more

Date: March 1, 1987

Creator: Feinberg, B.; Meaney, D.; Thatcher, R. & Timossi, C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

On-line velocity measurements using phase probes at the SuperHILAC

Phase probes have been placed in several external beam lines at the LBL heavy ion linear accelerator (SuperHILAC) to provide non- destructive velocity measurements independent of the ion being accelerated. The system uses three probes in each line to obtain accurate velocity measurements at all beam energies. Automatic gain control and signal analysis are performed so that the energy/nucleon along with up to three probe signals are displayed on a vector graphics display with a refresh rate bett… more

Date: December 1, 1987

Creator: Feinberg, B.; Meaney, D.; Thatcher, R. & Timossi, C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Accelerator operation management using objects

Conflicts over control of shared devices or resources in an accelerator control system, and problems that can occur due to applications performing conflicting operations, are usually resolved by accelerator operators. For these conflicts to be detected by the control system, a model of accelerator operation must be available to the system. The authors present a design for an operation management system addressing the issues of operations management using the language of Object-Oriented Design (… more

Date: April 1, 1995

Creator: Nishimura, H.; Timossi, C. & Valdez, M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Cross platform development using Delphi and Kylix

A cross platform component for EPICS Simple Channel Access (SCA) has been developed for the use with Delphi on Windows and Kylix on Linux. An EPICS controls GUI application developed on Windows runs on Linux by simply rebuilding it, and vice versa. This paper describes the technical details of the component.

Date: October 8, 2002

Creator: McDonald, J.L.; Nishimura, H. & Timossi, C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Experience with ActiveX control for simple channel access

Accelerator control system applications at Berkeley Lab's Advanced Light Source (ALS) are typically deployed on operator consoles running Microsoft Windows 2000 and utilize EPICS[2]channel access for data access. In an effort to accommodate the wide variety of Windows based development tools and developers with little experience in network programming, ActiveX controls have been deployed on the operator stations. Use of ActiveX controls for use in the accelerator control environment has been pr… more

Date: May 15, 2003

Creator: Timossi, C.; Nishimura, H. & McDonald, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

High performance/low cost accelerator control system

Implementation of a high performance computer control system tailored to the requirements of the SuperHILAC accelerator is described. This system uses a distributed (star-type) structure with fiber optic data links; multiple CPU's operate in parallel at each node. A large number (20) of the latest 16-bit microcomputer boards are used to get a significant processor bandwidth (exceeding that of many mini-computers) at a reasonable price. Because of the large CPU bandwidth, software costs and comp… more

Date: October 1, 1980

Creator: Magyary, S.; Glatz, J.; Lancaster, H.; Selph, F.; Fahmie, M.; Ritchie, A. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Operating experience with a new accelerator control system based upon microprocessors

This paper describes the design and operating experience with a high performance control system tailored to the requirements of the SuperHILAC accelerator. A large number (20) of the latest 16-bit microcomputer boards are used in a parallel-distributed manner to get a high system bandwidth. Because of the high bandwidth, software costs and complexity are significantly reduced. The system by its very nature and design is easily upgraded and repaired. Dynamically assigned and labeled knobs, toget… more

Date: March 1, 1981

Creator: Magyary, S.; Lancaster, H.; Selph, F.; Fahmie, M.; Timossi, C.; Glatz, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status report on the Advanced Light Source control system

This paper is a status report on the ADVANCED LIGHT SOURCE (ALS) control system. The current status, performance data, and future plans will be discussed. Manpower, scheduling, and costs issues are addressed.

Date: November 11, 1991

Creator: Magyary, S.; Chin, M.; Fahmie, M.; Lancaster, H.; Molinari, P.; Robb, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status Report on the Advanced Light Source Control System

Date: November 11, 1991

Creator: Magyary, S.; Chin, M.; Fahmie, M.; Lancaster, H.; Molinari, P.; Robb, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Advanced Light Source control system

The Advanced Light Source (ALS) is a third generation 1--2 GeV synchrotron radiation source designed to provide ports for 60 beamlines. It uses a 50 MeV electron linac and 1.5 GeV, 1 Hz, booster synchrotron for injection into a 1--2 GeV storage ring. Interesting control problems are created because of the need for dynamic closed beam orbit control to eliminate interaction between the ring tuning requirements and to minimize orbit shifts due to ground vibrations. The extremely signal sensitive n… more

Date: March 1, 1989

Creator: Magyary, S.; Chin, M.; Cork, C.; Fahmie, M.; Lancaster, H.; Molinari, P. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Successful Completion of the Top-off Upgrade of the Advanced Light Source

An upgrade of the Advanced Light Source to enable top-off operation has been completed during the last four years. The final work centered around radiation safety aspects, culminating in a systematic proof that top-off operation is equally safe as decaying beam operation. Commissioning and transition to full user operations happened in late 2008 and early 2009. Top-off operation at the ALS provides a very large increase in time-averaged brightness (by about a factor of 10) as well as improvemen… more

Date: January 31, 2010

Creator: Steier, C.; Bailey, B.; Baptiste, K.; Barry, W.; Biocca, A.; Byrne, W. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Superbend upgrade of the Advanced Light Source

The Advanced Light Source (ALS) is a third generation synchrotron light source located at Lawrence Berkeley National Laboratory (LBNL). There was an increasing demand at the ALS for additional high brightness hard x-ray beamlines in the 7 to 40 keV range. In response to that demand, the ALS storage ring was modified in August 2001. Three 1.3 Tesla normal conducting bending magnets were removed and replaced with three 5 Tesla superconducting magnets (Superbends). The radiation produced by these … more

Date: May 26, 2004

Creator: Robin, D.; Krupnick, J.; Schlueter, R.; Steier, C.; Marks, S.; Wang, B. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department