1. Large CMS GEM with APV & SRS electronics
Kondo GNANVO
Florida Institute of Technology, Melbourne, FL

2. K. GNANVO, CMS MPGD Electronics - CERN
OUTLINE
Setup of the CMS GEM and MTS GEM with APV & SRS electronics
The SRS DAQ software and Online Monitoring
APV pedestals comparisons between CMS GEM and MTS GEM
Preliminary data with cosmic ray muons with CMS GEM with APV & SRS electronics
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

3. K. GNANVO, CMS MPGD Electronics - CERN
CMS GEM with APVs
4APVs paired in 2 master/slave configuration
1 pair on sector 2 => channels
1 pair on sector 3 => 256 channels
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

4. Setup with CMS & MTS GEMs
MTS GEM (COMPASS design)
CMS GEM
SRS electronics and HV supply
DAQ & Monitoring PC with the network switch
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

5. K. GNANVO, CMS MPGD Electronics - CERN
DATE Framework with UDP equipment for the SRS Data Acquisition (Filippo Costa, ALICE DAQ)
DATE: ALICE DAQ software
Data Acquisition & Test Environment on Linux SLC5
Many features available , user friendly GUI for run control environment, basic online monitoring of the raw data, electronic logbook.
Data transfer to the DATE PC through Gigabit Ethernet via UDP:
One Ethernet port on the FE card connected to another port on the DATE PC via a copper cable or optical fiber cable data, (1Gb/s to 10 Gb/s throughput)
Network switch to handles as many as the 8 UDP ports for MT application
“Slow Control” for the system configuration
C script for Initialization of the FEC, ADC boards, APV hybrids and the network configuration …, uploaded at the Start of Run of DATE
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

6. AMORE for monitoring and data analysis
AMORE is ALICE Data Quality Monitoring Software framework
Automatic MonitoRing Environment founded on ROOT & DATE Monitoring Library
Online monitoring and offline data analysis (pedestal subtraction, zero suppression, strip occupancy, spectrum …)
amoreMTS package developed for FIT Muon Tomography Station, suitable for any application using the SRS electronics with APV
Pedestal run, test characterization run & more specifically Muon Tomography run
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

7. Pedestal mean (offset) for CMS GEM
Master APV 0
Slave APV 2
ADC count
ADC count
Strip number
Strip number
Master APV 3
Slave APV 4
ADC count
ADC count
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN
Strip number
Strip number

8. Pedestal RMS (noise) for CMS GEM
Master APV 0: CMS sector 2
Slave APV 2: CMS sector 2
ADC count
ADC count
Strip number
Strip number
Master APV 3: CMS sector 3
Slave APV 4: CMS sector 3
ADC count
ADC count
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN
Strip number
Strip number

9. Baseline correction & pedestals
1 step: computation of raw pedestal data to correct the baseline fluctuation
2nd step: common mode offset calculated for each time frame for each event from raw pedestals
Raw pedestal offset for APV no1
ADC count
Pedestal noise for APV no1
Strip number
ADC count
Strip number
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

10. Noise level comparison between CMS GEM and MTS GEM
APV 0: CMS sector 2
APV 2: CMS sector 3
ADC count
ADC count
Strip number
Strip number
APV 4: MTS top strips
APV 6: MTS bottom strips
ADC count
ADC count
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN
Strip number
Strip number

11. Cosmic ray muon event on CMS GEM
CMS sector 3
CMS sector 2
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

12. K. GNANVO, CMS MPGD Electronics - CERN
Same event on MTS GEM
MTS bottom strip
MTS top strips
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

13. K. GNANVO, CMS MPGD Electronics - CERN
Cluster size
CMS sector 2
GEM top strips
GEM bottom strips
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

14. K. GNANVO, CMS MPGD Electronics - CERN
Strip occupancy
CMS sector 2
CMS sector 3
GEM top strips
GEM bottom strips
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN

15. Cluster charge distribution
CMS sector 2
CMS sector 3
ADC count
ADC count
GEM top strips
GEM bottom strips
ADC count
ADC count
19/05/2011
K. GNANVO, CMS MPGD Electronics - CERN