GTA Beamloss-Monitor System

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7161859

Rose, C R; Fortgang, C M; Power, J P

The GTA Beamless-Monitor System at Los Alamos National Laboratory has been designed to detect high-energy particle loss in the accelerator beamline and shut down the accelerator before any damage can occur. To do this, the Beamless-Monitor System measures the induced gamma radiation, from (p, {gamma}) reactions, at 15 selected points along the beamline, converts this measured radiation to electrical signals integrates and compares them to preset limits, and, in the event of an over-limit condition causes the Fast-Protect System to shut down the entire accelerator. The system dynamic range exceeds 70 dB which will enable experimenters to use the Beamless-Monitor System to help steer the beam as well as provide signals for a Fast-Protect System. The system response time is less than 7 {mu}s assuming a step-function, worst-case beam spill of 50 mA. The system resolution, based on the noise floor of the electronics is about 1.3 mRads/s. Production units have been built and meet the above specifications. The remainder of the system will be installed and tested later in 1992/1993 with the GTA accelerator. The ionization chamber sensitivity and response time are described in the paper.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOD; Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7161859
• Report Number(s): LA-UR-92-2630; CONF-9208109-23; ON: DE92040212
• Resource Relation: Conference: 16. international LINAC conference, Ottawa (Canada), 23-28 Aug 1992
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM MONITORS
DESIGN
PARTICLE LOSSES
BEAM MONITORING
COMPUTERIZED CONTROL SYSTEMS
LINEAR ACCELERATORS
ACCELERATORS
CONTROL SYSTEMS
MEASURING INSTRUMENTS
MONITORING
MONITORS
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
430303* - Particle Accelerators- Experimental Facilities & Equipment
440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments