Prr t rtt - - PowerPoint PPT Presentation
Prr t rtt r rr r t tss r
✶ ✴ ✶✵
✷ ✴ ✶✵
OR
DAQ Analog sum Discriminator
◮ ❈❤❡r❡♥❦♦✈ ❧✐❣❤t ❝♦♥❡s ♣r♦❞✉❝❡ ❡①t❡♥❞❡❞ ✐♠❛❣❡s ♦♥ ❝❛♠❡r❛ ◮ ❉✉r❛t✐♦♥ ♦❢ s✉❝❤ ❛ ❈❤❡r❡♥❦♦✈ ✢❛s❤✿ ✷✲✻ ♥s
✸ ✴ ✶✵
Signal Clipper Clipping Signal Clipper Clipping
Signal Clipper Delayline Signal Clipper Delayline
Signal Clipper Attenuator Signal Clipper Attenuator
Digital counting unit Computer control OR
DAQ Analog sum Discriminator D-flipflop
Reference channel
✹ ✴ ✶✵
✺ ✴ ✶✵
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Amplitude [V] Time (1 ns / div) Input Pulse Minimum Delay Maximum Delay 1.66 ns 1.63 ns 1.86 ns 1.44 ns 0.82 ns 1.16 ns
steplessly adjustable delay
✻ ✴ ✶✵
◮ ■❞❡❛❧ ❝❛s❡✿ ♥♦ ❥✐tt❡r → st❡♣ ❢✉♥❝t✐♦♥ ◮ ❘❡❛❧ ❝❛s❡✿ ❞❡❧❛② ❥✐tt❡r ◮ ❙t❡♣ ❢✉♥❝t✐♦♥ ✏s♠♦♦t❤❡s ♦✉t✑ → s❤❛♣❡ ♦❢
Reference Pulse Output Delayline
50% 100% Optimal value Count rate Delay Step function (without jitter) Measured data points Fitted Error function 0%
✼ ✴ ✶✵
< 100 ps
100 200 300 400 500 0.5 1 1.5 2 2.5 3 3.5 4 Rate [Hz] Delay [ns] 65 ps 32 ps Channel 2 run 1 Fit (χ 2/NDF = 2.4) Channel 2 run 2 Fit (χ 2/NDF = 1.6) Channel 2 run 3 Fit (χ 2/NDF = 2.0) Channel 3 run 1 Fit (χ 2/NDF = 1.3) Channel 3 run 2 Fit (χ 2/NDF = 1.3) Channel 3 run 3 Fit (χ 2/NDF = 1.2)
✽ ✴ ✶✵
5 10 15 20 25 10 20 30 40 50 60 70 Rate [Hz] Attenuation [% of maximum amplitude] 1.6 % 2.8 % Channel 3 run 1 Fit (χ 2/NDF = 1.3) Channel 3 run 2 Fit (χ 2/NDF = 2.2) Channel 3 run 3 Fit (χ 2/NDF = 0.5) Channel 4 run 1 Fit (χ 2/NDF = 1.6) Channel 4 run 2 Fit (χ 2/NDF = 0.3) Channel 4 run 3 Fit (χ 2/NDF = 1.0)
✾ ✴ ✶✵
◮ ❢❛❝✐❧✐t❛t❡ s❡t✉♣✱ ❝❛❧✐❜r❛t✐♦♥ ❛♥❞ ♠❛✐♥t❡♥❛♥❝❡ ◮ ❢✉rt❤❡r r❡❞✉❝❡ ❡♥❡r❣② t❤r❡s❤♦❧❞ ❜❡❧♦✇ ✷✺ ●❡❱
◮ s✐♠♣❧❡✱ r♦❜✉st✱ ❛♥❞ ❝♦st✲❡✛❡❝t✐✈❡ ❝✐r❝✉✐ts ◮ ❤✐❣❤ ♣r❡❝✐s✐♦♥ ✐♥ ❛❞❥✉st♠❡♥t
◮ ❛❞❥✉st♠❡♥t ♦❢ ❞❡❧❛②s ✐♥ ♠❛♥② ✜❡❧❞s ♦❢ ❛♣♣❧✐❝❛t✐♦♥ ◮ ❝♦st✲❡✛❡❝t✐✈❡ ❞❡s✐❣♥s
◮ ❙✉♠✲❚r✐❣❣❡r ❝❛♥ ❤❡❧♣ t♦ r❡❞✉❝❡ t♦t❛❧ ❝♦st ◮ ♠❡❡ts r❡q✉✐r❡♠❡♥ts ❢♦r ❧♦✇ ♣♦✇❡r ❝♦♥s✉♠♣t✐♦♥
✶✵ ✴ ✶✵