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

ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 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)

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

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

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

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

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

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

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

ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 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”

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

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

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

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

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

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

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

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

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

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

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

ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 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)

ATLAS ATLAS DCS H.J.Burckhart, Muon Electronics Meeting, December 11th 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 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 !