1. Further studies of the FEI3 TDAC Tuning
Kevin Jamison
Brenda Bushell
Shih-Chieh Hsu
April 30, 2013

2. Register Test
Checks the connection of all the components involved in readout
Test writes a bit pattern into the tested register
After the test is complete, content is read out and compared to the original pattern to test for bit flips
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

3. Register Test Further studies of the FEI3 TDAC tuning 4/30/13
Brenda Bushell Kevin Jamison
4/30/13

4. Threshold Tuning at 16 mask steps
Using 16 of 32 mask steps, we performed 3 threshold scans at different stages of FE chip tuning to observe threshold changes
Threshold target is 4000e
First scan is of the standard configuration file for FE-I3
Second scan is with GDAC changed to 10 after GDAC tune
Third scan is after TDAC tuning at 16 mask steps
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

5. Threshold Tuning at 16 mask steps
Target threshold of 4000e
No tuning
GDAC set to 10
GDAC 10 and TDACs tuned
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

6. TDAC tuning Performed TDAC_TUNE PixScan
Instead of performing full tuning of the FE chip, various mask steps were used (e.g. 16 of 32 steps) to observe tuning complications.
All tunings were done with GDAC set to 10
Target threshold was 4000e
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

7. TDAC tuning: 16 mask steps
Target threshold of 4000e
Scan Point 0
Scan Point 1
Scan Point 2
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

8. TDAC tuning: 16 mask steps
Target threshold of 4000e
Scan Point 3
Scan Point 4
Scan Point 5
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

9. TDAC tuning: 16 mask steps
Target threshold of 4000e
Scan Point 6
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

10. TDAC tuning: 24 mask steps
Target threshold of 4000e
Scan Point 0
Scan Point 1
Scan Point 2
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

11. TDAC tuning: 24 mask steps
Target threshold of 4000e
Scan Point 3
Scan Point 4
Scan Point 5
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

12. TDAC tuning: 24 mask steps
Target threshold of 4000e
Scan Point 6
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

13. TDAC tuning: 32 mask steps
Target threshold of 4000e
Scan Point 0
Scan Point 1
Scan Point 2
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

14. TDAC tuning: 32 mask steps
Target threshold of 4000e
Scan Point 3
Scan Point 4
Scan Point 5
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

15. TDAC tuning: 32 mask steps
Target threshold of 4000e
Scan Point 6
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

16. TDAC tuning: 28 mask steps
Target threshold of 4000e
Scan Point 0
Scan Point 1
Scan Point 2
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

17. TDAC tuning: 28 mask steps
Target threshold of 4000e
Scan Point 3
Scan Point 4
Scan Point 5
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

18. TDAC tuning: 28 mask steps
Target threshold of 4000e
Scan Point 6
Scan Point 7
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13

19. Future Objectives Create IV-Curve of 3Dsensor
Use data from Stcontrol to make plots in root
Learn how to take output of a scan and transfer into new version of Module Analysis
Possibly observe other thresholds of TDAC and GDAC
Continue forward on other scans using lower mask steps instead of entire FE chip
Compare TDAC tune loop 1, scan point 0 to a threshold scan where all TDACS are set to the same value as the TDAC tune loop1, scan point 0 to see if they produce the same results.
Attempt to create user defined mask for tuning
Find out how to make Scan Point 0 use current TDAC setting instead of being overwritten (value of -1 does not work as it is supposed to, perhaps due to older version of software)
Further studies of the FEI3 TDAC tuning
Brenda Bushell Kevin Jamison
4/30/13