Difference between revisions of "Setup and tests"
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+ | = Setup = | ||
+ | |||
{| border="1" cellpadding="2" | {| border="1" cellpadding="2" | ||
|- | |- | ||
|width="415pt"|[[Image:setup1.jpg|thumb|none|400px|Setup of the new prototype.]] | |width="415pt"|[[Image:setup1.jpg|thumb|none|400px|Setup of the new prototype.]] | ||
|width="415pt"|[[Image:setup2.jpg|thumb|none|400px|Setup of the new prototype.]] | |width="415pt"|[[Image:setup2.jpg|thumb|none|400px|Setup of the new prototype.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | = Fe-55 spectra = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:fe55-amplit.jpg|thumb|none|400px|Fe-55 induced amplitude spectrum.]] | ||
+ | |width="415pt"|[[Image:fe55-energy.jpg|thumb|none|400px|Fe-55 induced energy spectrum.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | = Fe-55 spectra (simulated)= | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:fe55-amplit-sim.jpg|thumb|none|400px|Fe-55 induced amplitude spectrum (simulated).]] | ||
+ | |width="415pt"|[[Image:fe55-energy-sim.jpg|thumb|none|400px|Fe-55 induced energy spectrum (simulated).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | |||
+ | = Garfield Simulation of signals = | ||
+ | Left simulation, right real data. | ||
+ | The gas gain used is 1.65x10^5 | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:amplit-sim.jpg|thumb|none|400px]] | ||
+ | |width="415pt"|[[Image:amplit-real.jpg|thumb|none|400px]] | ||
+ | |width="415pt"|[[Image:amplit-real-cut.jpg|thumb|none|400px|Real amplitude with low energies cut away]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:energy-sim.jpg|thumb|none|400px]] | ||
+ | |width="415pt"|[[Image:energy-real.jpg|thumb|none|400px]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:drifttime-sim.jpg|thumb|none|400px]] | ||
+ | |width="415pt"|[[Image:drifttime-real.jpg|thumb|none|400px]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | = Tilted chamber - tracks at 30 degrees = | ||
+ | |||
+ | = HV-plateau curve and Noise vs HV = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:hv-curve.jpg|thumb|none|400px|Tracked cosmic rays vs HV (normalized).]] | ||
+ | |width="415pt"|[[Image:noisevshv.jpg|thumb|none|400px|Pedestal mean vs HV.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | Different symbols are different channels/straws. | ||
+ | |||
+ | = Check if 125 MHz clock is working with a 300 MHz block pulse input = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:blockpulse.jpg|thumb|none|400px|Yes 125~MHz clock is correct.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | = Pedestal = | ||
+ | The pedestal mean was between 993 and 1365 channels at Aug 2008 with all channels working. | ||
+ | Now the pedestal mean is between 0 and 437 channels. This mean I have to move the baseline up a little bit...but the spread of the mean did not change. | ||
+ | |||
+ | |||
+ | == Pedestals when the HVB is connected to the CDC == | ||
+ | Pedestal vs time (1000 event runs) is plotted. | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedestal-ch1.jpg|thumb|none|400px|Pedestal vs time (ch1).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch2.jpg|thumb|none|400px|Pedestal vs time (ch2).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch3.jpg|thumb|none|400px|Pedestal cs time (ch3).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | Channels 12-13-14 show some (signs of) problems: | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedestal-ch12.jpg|thumb|none|400px|Pedestal vs time (ch12).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch13.jpg|thumb|none|400px|Pedestal vs time (ch13).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch14.jpg|thumb|none|400px|Pedestal cs time (ch14).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | == Pedestals when HVB is not connected == | ||
+ | Pedestal vs time (1000 event runs) is plotted. | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedestal-ch1-pure.jpg|thumb|none|400px|Pedestal vs time (ch1).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch2-pure.jpg|thumb|none|400px|Pedestal vs time (ch2).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch3-pure.jpg|thumb|none|400px|Pedestal cs time (ch3).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | Channels 12-13-14 show some (signs of) problems: | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedestal-ch12-pure.jpg|thumb|none|400px|Pedestal vs time (ch12).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch13-pure.jpg|thumb|none|400px|Pedestal vs time (ch13).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch14-pure.jpg|thumb|none|400px|Pedestal cs time (ch14).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | = Old pedestals versus time (Aug 2008) = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:pedestal-ch1-old.jpg|thumb|none|400px|Pedestal vs time (ch1).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch2-old.jpg|thumb|none|400px|Pedestal vs time (ch2).]] | ||
+ | |width="415pt"|[[Image:pedestal-ch3-old.jpg|thumb|none|400px|Pedestal cs time (ch3).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | = Some sample signals = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:sample1.jpg|thumb|none|400px|Raw signal.]] | ||
+ | |width="415pt"|[[Image:sample2.jpg|thumb|none|400px|Raw signal.]] | ||
+ | |width="415pt"|[[Image:sample3.jpg|thumb|none|400px|Raw signal.]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | |||
+ | = Energy spectra (not tracked) = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:energy-ch1.jpg|thumb|none|400px|Energy spectrum (ch1).]] | ||
+ | |width="415pt"|[[Image:energy-ch2.jpg|thumb|none|400px|Energy spectrum (ch2).]] | ||
+ | |width="415pt"|[[Image:energy-ch16.jpg|thumb|none|400px|Energy spectrum (ch16).]] | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | = t-Zero spectra = | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:tzero-ch1.jpg|thumb|none|400px|T-zero spectrum (ch1).]] | ||
+ | |width="415pt"|[[Image:tzero-ch2.jpg|thumb|none|400px|T-zero spectrum (ch2).]] | ||
+ | |width="415pt"|[[Image:tzero-ch16.jpg|thumb|none|400px|T-zero spectrum (ch16).]] | ||
+ | |- | ||
+ | |} | ||
+ | {| border="1" cellpadding="2" | ||
+ | |- | ||
+ | |width="415pt"|[[Image:garfield-xt.jpg|thumb|none|400px|XT relation according to GARFIELD.]] | ||
|- | |- | ||
|} | |} |
Latest revision as of 13:21, 23 March 2009
Contents
- 1 Setup
- 2 Fe-55 spectra
- 3 Fe-55 spectra (simulated)
- 4 Garfield Simulation of signals
- 5 Tilted chamber - tracks at 30 degrees
- 6 HV-plateau curve and Noise vs HV
- 7 Check if 125 MHz clock is working with a 300 MHz block pulse input
- 8 Pedestal
- 9 Old pedestals versus time (Aug 2008)
- 10 Some sample signals
- 11 Energy spectra (not tracked)
- 12 t-Zero spectra
Setup
Fe-55 spectra
Fe-55 spectra (simulated)
Garfield Simulation of signals
Left simulation, right real data. The gas gain used is 1.65x10^5
Tilted chamber - tracks at 30 degrees
HV-plateau curve and Noise vs HV
Different symbols are different channels/straws.
Check if 125 MHz clock is working with a 300 MHz block pulse input
Pedestal
The pedestal mean was between 993 and 1365 channels at Aug 2008 with all channels working. Now the pedestal mean is between 0 and 437 channels. This mean I have to move the baseline up a little bit...but the spread of the mean did not change.
Pedestals when the HVB is connected to the CDC
Pedestal vs time (1000 event runs) is plotted.
Channels 12-13-14 show some (signs of) problems:
Pedestals when HVB is not connected
Pedestal vs time (1000 event runs) is plotted.
Channels 12-13-14 show some (signs of) problems:
Old pedestals versus time (Aug 2008)
Some sample signals
Energy spectra (not tracked)