标题： NuMI 束流在 FNAL 的剖面监视 SEM 的使用 显示英文标题

标题： Profile Monitor SEM's for the NuMI Beam at FNAL

摘要： 位于主注入器（NuMI）的中微子项目将在每1.9秒内从FNAL主注入器中提取8.56微秒的120 GeV质子，每次提取4E13个质子。 我们设计了次级发射监测器（SEM）探测器，用于测量质子束传输线上的束流剖面和晕圈。 SEM是厚度为5微米的钛箔，以1毫米或0.5毫米的间距分段，导致束流损失约为5E-6。 我们讨论了机械设计的各个方面、预期束流加热的计算以及在FNAL的8 GeV传输线到MiniBoone的束流测试结果。 显示英文摘要

摘要： The Neutrinos at the Main Injector (NuMI) project will extract 120 GeV protons from the FNAL Main Injector in 8.56usec spills of 4E13 protons every 1.9 sec. We have designed secondary emission monitor (SEM) detectors to measure beam profile and halo along the proton beam transport line. The SEM?s are Ti foils 5um in thickness segmented in either 1?mm or 0.5?mm pitch strips, resulting in beam loss ~5E-6. We discuss aspects of the mechanical design, calculations of expected beam heating, and results of a beam test at the 8 GeV transport line to MiniBoone at FNAL.