1. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 1 Status of Embedded Local Monitor Board (ELMB) Overview Radiation tolerance measurements Future work

2. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 2 What is the ELMB ?  I/O concentrator implemented as CAN fieldbus node  Features 8 ports input 8 ports output 8 ports definable ADC, 64 channels, 16 bit resolution, 7 bit gain  Add-ons: DAC, 16 channels, 12 bit resolution (NIKHEF) HW Interlock, 16 channels, window set by resistors (Wuppertal) Motherboard (NTU Athens) Goal: flexible I/O system for use in ATLAS cavern outside the calorimeter (i.e. Muons) Goal: flexible I/O system for use in ATLAS cavern outside the calorimeter (i.e. Muons)

3. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 3 Status ELMB  Design: HW CERN; SW NIKHEF  Prototype LMB  Review (subdetector’ wishes, radiation tolerance)  ELMB prototype 20 pieces production 300 pieces (with help from EP/ESS, NTU Athens) pre-qualification measurements concerning radiation

4. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 4 ELMB front side 50mm 67 mm DIP-SW ID BAUD ISP

5. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 5 ELMB back side ADC 2*50 pin Bergstac connector ADC Analog MUX

6. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 6 ELMB ADC 1uV

7. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 7 ELMB ADC

8. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 8 ELMB3 motherboard for tests in DIN rail housing

9. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 9 Back side of MB3

10. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 10 Radiation Measurements  Total Ionisation Dose (TID) PAGURE, Saclay, Co 60 (1 MeV gammas) GIF, CERN, Cs 137 (662 keV gammas) CYCLONE, Louvain-la-Neuve, 60 MeV protons  Single Event Effects (SEE) CYCLONE, Louvain-la-Neuve, 60 MeV protons  Non-Ionising Energy Loss (NIEL) PROSPERO, Valduc, 0.75 MeV neutrons from reactor  “Measurements in the Field” TCC2 target area, CERN SPS, “realistic (?) mix of particles”

11. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 11 TID tests

12. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 12 Accelerated ageing test

13. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 13 TID effects

14. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 14 NIEL test Prospero

15. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 15 SEE effects: SRAM

16. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 16 SEE Results: Memories No of bits testedNo of errorsCross-section cm 2 /bit SRAM 163842320 4.3 * 10 -13 EEPROM 28672<1 <1.1 * 10 -16 FLASH 1048576<1 <2.9 * 10 -18 CAN reg. 32023 2.2 * 10 -13 ADC reg. 26422 2.5 * 10 -13 No errors were found in Flash memory and EEPROM!

17. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 17 Radiation Requirements SEE category / SymptomsError recovery Maximum allowed rate Soft SEE/ Data readout errorsAutomatic1 per 10 min per CAN branch Soft SEE / CAN node hangsSoftware reset1 per 24 h per CAN node Soft SEE / CAN branch hangsPower cycling1 per 24 h per CAN branch Hard SEE / Permanent errorReplace ELMB1 per months for 3000 ELMBs Destructive SEE / DamagePower limitationNot allowed

18. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 18 Results

19. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 19 Summary Radiation Tolerance  Radiation pre-qualification finished DCS IWN 9-12 Summary paper given at the 7th Workshop on Electronics for LHC Experiments, Stockholm, Sweden, September 2001  Subdetectors have to decide, where to use ELMB e.g. Muons, Assessment of Electronics Coordination: SEE looks ok, more precaution (SW) and automatic recovery needed NIEL looks ok TID at the limit, study position of ELMB on some chambers EC1

20. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 20 Need  Envisaged usage of ELMB “standard” use (with ADC) MDT: 1200 infrastructure and other subdetectors : 1000 other LHC experiments ??? “special” use (w/o ADC, special SW) TGC: 1000 RPC: 1000

21. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 21 Estimated Cost  Quantity~300 pc~4000 pc  Microcontroller $70 $50  ADC $50 $40  $120 $90  Overhead 30%? $40 $30  Total $160 $120  Catalog price (1pc) $320 (>1k) $160

22. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 22 Next Steps (1)  Work to do simplify PCB (8 ==> 6 layers) cabling/powering of full branch automatic detection of and recovery from SEE Final connection to SCADA PVSS HW: interface card SW: OPC, driver Distribution of functions (see DCS-IWN 13)

23. ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 2001 23 Next Steps (2)  Procurement production in industry (allow 1-2 years !!!) Market Survey procedure has been started Tendering, need commitments (pledges !) from ATLAS institutes pre-series of 500-1000 next year (not for UX) final series 2003/2004 (?) Combined/separate production of ELMB with and w/o ADC ? Support by the CERN electronics pool Probably a shortage of ELMBs next year !