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Summer 2000 HF Beam Test. DAQ proposal.

Summer 2000 HF Beam Test. DAQ proposal. E. Vlassov & T. Camporesi (CERN). Basics: Temporary solution because issue is not test of final readout electronics. Independent hardware to avoid interference with HCAL test in the beam area. Use existing hardware/software as much as possible.

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Summer 2000 HF Beam Test. DAQ proposal.

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  1. Summer 2000 HF Beam Test. DAQ proposal. E. Vlassov & T. Camporesi (CERN) • Basics: • Temporary solution because issue is not test of final readout electronics. • Independent hardware to avoid interference with HCAL test in the beam area. • Use existing hardware/software as much as possible. • Movable setup which can be used in Bld.186 or H2 area.

  2. Tasks • Read PMTs signals from beam (very low charge!). • To trigger and monitor beam information (scintillators and delay wire chambers). • Laser/LED calibration. • Source calibration. • Control and monitor Nikhef Platform movements.

  3. MWPC HF Trigger counters Nikhef Table Engines (X electrical, Y hydraulic) General layout Linux Midas ROBOX NIM Lecroy 2774 preampl. CAMAC F B D F I P FASTBUS 1 8 8 5 Ethernet Spare space

  4. Fastbus electronics • Lecroy F1885F ADC 1 • 96 channels, automatic dual range, • 12 bits in each range, 0.05pC/count(*) • in low range, 0.4pC/count in high range, • 15 bits effectively. • 2. Lecroy F1882N ADC 2 • 96 channels, 12 bits, 0.05pC/count • 3. Lecroy multihit TDC 2 • 96 channels, 1ns/count,16bits • 4. Digital input/output registers 3 • 64 channels in each • (*) expect 0.002 pC/Gev,i.e.1 bit= 25 GeV: we need amplification!

  5. Preamplifier • Lecroy 2724, 2 • compatible with 1880 series ADCs • Amplification 160 • 24 channels, noise<1.5fC, • dynamic range >32000. • Input impedance 60W. Short cable? • Might need AC coupling: will need to test when we get ROBOX (and base!) at CERN • We have only 2 preamp boards (48 chan), but can get two more with 1 week notice

  6. ROBOX HF Source driver Multiplexer Electrometer ADC HF sourcing Connection to driver, multiplexer and ADC through RS232 and FASTBUS-CAMAC

  7. Multiplexer and ADC.(for source calibration) Electrometer

  8. Multiplexer/Borer ADC(for Source calibration) • Relay multiplexer Nuclear Ent. 9024/S2 • 64 way 3 pole relay, • low thermal EMF<10mkv, driving by 9600/S1 CAMAC module. • CAMAC Borer 1241 DC ADC, • 11 bits+sign, 7 programmable ranges of sensitivity (20mv –10v). • Charge protection – 3 ways: • To use 2 unused poles • To use 2-nd stage CAMAC multiplexer • To modify multiplexer. Half of day job.

  9. Platform • Vertical direction: • Control – TTL potentials (4 outputs) • Position Readout (Heidenhain linear transducer readable via RS232) precision 10 microns • Horizontal direction: • Control – TTL 5kHz pulses with variable duty cycle. • Position readout: resistive wire current readout ( recuperated) precision 1 mm (determined by ADC sensitivity)

  10. What we do not have yet • Connectors to ROBOX and preamp • Might need more NIM/CAMAC modules from the POOL ( for signal conversions etc.) • NEXT STEPs: • Commission HF source driver and verify multiplexing scheme • Work on ROBOX/preamp setup once we get the ROBOX at CERN from TEXAS • Install beam MWPC and trigger counters in H2 • From mid-june control units and engines for platform should be available and we will start exercising it (issues: calibration of displacement monitors, stability/reproducibility of hydraulic system)

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