rf measurements and tuning of the 1-m-long 750 MHz radio-frequency quadrupole for artwork analysis

被引：2
|
作者：
Pommerenke, Hermann W. [1 ,2 ]
van Rienen, Ursula [2 ,3 ]
Grudiev, Alexej [1 ]
机构：
[1] European Org Nucl Res CERN, CH-1211 Geneva 23, Switzerland
[2] Univ Rostock, Inst Gen Elect Engn, D-18051 Rostock, Germany
[3] Univ Rostock, Dept Life Light & Matter, D-18051 Rostock, Germany
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2021年 / 1011卷
关键词：
RFQ; Radio-frequency quadrupole; rf measurements; Tuning; PRESSURE;
D O I：
10.1016/j.nima.2021.165564
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The 750 MHz PIXE-RFQ (radio-frequency quadrupole), developed and built at CERN, provides 2 MeV protons over a length of one meter for proton-induced X-ray emission analysis (PIXE) of cultural heritage artwork. In this paper, we report low-power rf measurements and tuning of the PIXE-RFQ, which have been completed mid-2020. Using a novel algorithm based on direct measurements of the response matrix, field and frequency could be tuned at the same time in only two steps to satisfying accuracy. Additionally, we report measurements of single modules, quality factors, and coupling strength. In all cases, very good agreement between rf measurement and design values was observed.
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页数：11
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