Digital Down Conversion Technology for Tevatron Beam Line Tuner at FNAL.

Schappert, W. ; Lorman, E. ; Ross, M. ; Scarpine, V. ; Sebek, J.

Technical Information Center Oak Ridge Tennessee

关键词: Particle accelerators;    Antiprotons;    Luminosity;    Oscillations;    Protons;   

RP-ID  :  DE2008925781

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Fermilab is presently in Run II collider operations and is developing instrumentation to improve luminosity. Improving the orbit matching between accelerator components using a Beam Line Tuner (BLT) can improve the luminosity. Digital Down Conversion (DDC) has been proposed as a method for making more accurate beam position measurements. Fermilab has implemented a BLT system using a DDC technique to measure orbit oscillations during injections from the Main Injector to the Tevatron. The output of a fast ADC is downconverted and filtered in software. The system measures the x and y positions, the intensity, and the time of arrival for each proton or antiproton bunch, on a turn-by-turn basis, during the first 1024 turns immediately following injection. We present results showing position, intensity, and time of arrival for both injected and coasting beam. Initial results indicate a position resolution of (approx)20 to 40 microns and a phase resolution of (approx) 25 ps.