1. N. Saoulidou, Fermilab1 Study of the QIE Response (Current Injection Mode) & development of diagnostic tools. 02-13-2004

2. N. Saoulidou, Fermilab2 Outline Study of the QIE response using CalDet Near Cal Check Runs and define “pathologies” related with : –RMS –Linearity –Number of Current Injection Points –Number of entries used for each Point Implementation of this analysis in the QieCalibration Module in order to develop diagnostic tools for the ND electronics. “Results” from a Near Cal Check Run at the New Muon Lab ( 9 ND Plane Integration Test) Summary – on going work

3. N. Saoulidou, Fermilab3 Definition of “bad” and “suspicious” channels ( QIE or QIE response Pathologies) Rms : –Definition of “bad” channels : rms greater than maximum in at least 8 of the 37 different DAC values. –Definition of “suspicious” channels : rms greater than maximum in any of the 37 different DAC values. Linearity : –Definition of “bad” channels : Chi-square of the fit (mean vs dacval ) > 10. Entries : –Definition of “bad” channels: Missing entries for each QIE calibration point (256 in total 64 for each CAPID). Calibration Points : –Definition of “bad” channels : Missing some of the 37 different calibration points

4. N. Saoulidou, Fermilab4 Example of “Bad” channels from a NCC Run @ the New Muon Lab : Graphical Display caltree->Draw(“minderch:masterch”,” badrms”,”colz”) This turned out to be a single menu problem (the first one that all the rest 15 in that particular minder used as a reference) and we replaced the minder.

5. N. Saoulidou, Fermilab5 “Bad” channels : Text files Running the QieCalibration Module 5 text files are generated: –bad_channels_rmsxx.dat Large RMS in most 37 DAC values –suspicious_channels_xx.dat Large RMS anywhere –bad_channels_chisqxx.dat Large chi-square –bad_channels_entriesxx.dat Missing Entries –bad_channels_dataxx.dat Missing Calibration Points These files contain : –master –minder channel –master channel –crate –module –Strip & Plane –DAC value –PATHOLOGY RELATED INFO (rms, chi-square, entries, calibration points)

6. N. Saoulidou, Fermilab6 Example of a particularly “Bad” channel from a NCC Run @ the New Muon Lab This particular channel was flagged as “bad” by examining the info in the output text files. It appeared in nearly all text files as having : –Large chi-square –Missing entries –Missing data points Mean vs DAC value

7. N. Saoulidou, Fermilab7 Summary & on going work The study of the QIE response in Near Cal Check runs reveals potential “pathologies” related with large rms’s, deviations from the linear behavior, and other calibration (or QIE response) pathologies. 122 NCC Runs from CalDet have already been checked and only 2/1440 channels show problems with large Rms's and another 2/1440 had missing entries for a particular run and a particular DAC value (I will give a detailed update in near future). The development of these diagnostic tools for CalDet applies for the ND running as well and is already used at the 9 Plane Integration Test @ the New Muon Lab. I plan on switching again at the study of the QIE response time stability using the NCC CalDet Runs.