基于脉冲束的数字化双多普勒展 宽符合寿命增仪 Hp-Ge 535 520 y 511 keV 515 510 的 y 511 keV 500 500 505 510 515520 490 Source of pulsed positron beam 102 Element Si Hp-Ge Ga 103 AD e ADC T春 1×10 CDB 1×105 10- 10 20 30 Electron momentum P(103moc) PDF文件使用"pdfFactory”试用版本创建www.fineprint.cn
基于脉冲束的数字化双多普勒展 宽符合寿命谱仪 PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.cn
基于脉种束的数字化寿命动量 关联谱仪 BaF2 10- y 511 keV 10 y 511 kev 10 Source of pulsed positron beam Hp-Ge wwwcwwmpmmrmmp 01020 positron age [ns] S00 50s0S520 Y energy [keV] 0.60 p-Ps 0.551 Machine's o-Ps S ADC time zero TAC 0.50月 free e+ AMOC 0.45 0 2 8 positron age (ns) PDF文件使用"pdfFactory”试用版本创建www.fineprint.cn
基于脉冲束的数字化寿命-动量 关联谱仪 PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.cn
脉冲束寿命谱仪的关键技术 ●Time resolution CF-timing technique in digital measurement OTriple coincidence improves time resolution oRepetition time for long lifetimes ●Cut art in off-line PDF文件使用"pdfFactory”试用版本创建w.fineprint.cn
lTime resolution lCF-timing technique in digital measurement lTriple coincidence improves time resolution lRepetition time for long lifetimes lCut art in off-line PDF 文件使用 "pdfFactory" 试用版本创建 ` www.fineprint.cn ÿ `
CF-timing technique in digital measurement PDF文件使用"pdfFactory”试用版本创建www.fineprint.cn
CF-timing technique in digital measurement PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.cn
Digital Systems First important fact No need to have dedicated start-and stop-tubes. Simple coincidence for pulses to reduce background-noise is enough. Second important fact Moore's Law also applies to ideas. Current testing includes two tubes either in 90-or 180°-Setup. Tubes are directly connected to digitizers, no external amplification is applied. For better S/N-Ratio an external coincidence (logical AND) is used to trigger data acquisition only on good pulse-pairs. PDF文件使用"pdfFactory”试用版本创建w.fineprint.cn
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