MiniPrototype CAEN V792 Calibration

From New IAC Wiki
Revision as of 17:39, 11 December 2007 by Oborn (talk | contribs) (→‎Calibration)
Jump to navigation Jump to search

I injected a signal into the Drift chamber preamps and read it out using the CAEN V792 ADC.

12/11/07

7 mV Signal

Here is a scope picture of the signal coming out of the preamp and going into the ADC (Blue) as well as the integration gate used. The signal is about 7 mv as shown below. There is a 2 mv peak to peak noise level which has structure.

ADC V792 Calib a 12-11-07.jpg ADC V792 Calib a noise 12-11-07.jpg ADC V792 Calib a noise 2 12-11-07.jpg

The data was then collected using coda and recorded as run #189. A histogram of channel #1 is shown below.


ADC V792 Calib 7mV Output 12-11-07 Histo.gif ADC V792 Calib 7mV Ped 12-11-07 Histo.gif ADC V792 Calib 7mV S 12-11-07 Histo.gif

20 mV signal

Reducing the attenuation, a 20 mV signal was sent into the ADC.

ADC V792 Calib S20mV 12-11-07.jpg

The data was then collected using coda and recorded as run #190. A histogram of channel #1 is shown below.

ADC V792 Calib 20mV Output 12-11-07 Histo.gif ADC V792 Calib 20mV Ped 12-11-07 Histo.gif ADC V792 Calib 20mV S 12-11-07 Histo.gif


100 mV signal

Reducing the attenuation, a 100 mV signal was sent into the ADC.

ADC V792 Calib S100mV 12-11-07.jpg

The data was then collected using coda and recorded as run #191. A histogram of channel #1 is shown below.

ADC V792 Calib 100mV Output 12-11-07 Histo.gif ADC V792 Calib 100mV Ped 12-11-07 Histo.gif ADC V792 Calib 100mV S 12-11-07 Histo.gif

Calibration

Plastik's output is going into channels 1-7 and Metalicas output into 10-16. Drift Chamber High Voltage is off and preamp is powered to 5.8 volts. The post amp is not being used.

Input (mV) Chan 1 Chan 2 Chan 3 Chan 4 Chan 5 Chan 6 Chan 7 Chan 8 Chan 9 Chan 10 Chan 11 Chan 12 Chan 13 Chan 14 Chan 15 Chan 16
7
20
100