Daya Bay Antineutrino Detector: Testing and Commissioning Dan Dwyer (for the Daya Bay Collaboration) Caltech Oct. 12, 2009 Daya Bay Antineutrino Detector Testing Dan Dwyer 1/14 DBD09: Oct. 12, 2009
Anti-neutrino Detector - Progress of AD Assembly - First Step in Commissioning: AD Dry Run AD = Anti-neutrino Detector Daya Bay Antineutrino Detector Testing Dan Dwyer 2/14 DBD09: Oct. 12, 2009
A Busy Year Summer 2010: Install Spring 2010: Transport underground Early 2010: at near site and begin and fill with scintillator. AD Dry Run taking data Now: Assemble 1 st pair of detectors above ground SAB Daya Bay Antineutrino Detector Testing Dan Dwyer 3/14 DBD09: Oct. 12, 2009
Surface Assembly Building Gate 2 RPC b SSV storage PMT North Bay 10 ton Overhead Crane Coverage test Clean change Door Door AC Wash PMT Gate 1 Door Area Door ladder assem Clean Room AD Pit Daya Bay Antineutrino Detector Testing Dan Dwyer 4/14 DBD09: Oct. 12, 2009
Detector Assembly Lower 5m stainless steel vessel into pit Install 4m outer acrylic vessel Daya Bay Antineutrino Detector Testing Dan Dwyer 5/14 DBD09: Oct. 12, 2009
Detector Assembly Install 3m inner acrylic vessel Mount PMTs on support structure and lower into vessel Daya Bay Antineutrino Detector Testing Dan Dwyer 6/14 DBD09: Oct. 12, 2009
Detector Assembly Close lid, install calibration units, etc. Wash, rinse, repeat: 8 detectors in total. Before moving detector, opportunity to check that it all works... → AD Dry Run Daya Bay Antineutrino Detector Testing Dan Dwyer 7/14 DBD09: Oct. 12, 2009
AD Dry Run System check before filling with scintillator 1. Dark Hits: 2. Buffer LEDs: -Verify PMT readout -Verify coordination of and system integration Calibration and DAQ 3. Central LED: 4. Off-Center LED: -Initial Calibration -Reference data for -PMT measurements: optical modeling -timing offsets -gain -P/V ratio -relative efficiency Daya Bay Antineutrino Detector Testing Dan Dwyer 8/14 DBD09: Oct. 12, 2009
AD Dry Run Labelled figure from Wei Wang. Check instrumentation is working correctly Daya Bay Antineutrino Detector Testing Dan Dwyer 9/14 DBD09: Oct. 12, 2009
AD Dry Run Integrated test of complete AD system FEE Local HV Splitter VME DAQ Computing Trigger Analysis Software AD instrumentation PMTs LEDs Calibration Driver Control Daya Bay Antineutrino Detector Testing Dan Dwyer 10/14 DBD09: Oct. 12, 2009
Piecewise Integration Much progress Display of raw data in recent months Electronics DAQ Interface FEE Local Splitter VME DAQ Computing Trigger HV Analysis Software PMTs LEDs Calibration Photomultipliers Driver Calibration system Control Daya Bay Antineutrino Detector Testing at Caltech Dan Dwyer 11/14 DBD09: Oct. 12, 2009
On the Road Detector is moved underground for filling / installation Lift detector out of assembly pit Tranport into mine using specialized vehicle Daya Bay Antineutrino Detector Testing Dan Dwyer 12/14 DBD09: Oct. 12, 2009
A Final Note Near Site Commissioning Run: Summer 2010 ~10,000 ͞ ν e per week arXiv:0907.1896 Can study: - Reactor anti-neutrino spectrum - Backgrounds - “Identical” detector systematics Potential for quick results! Detector systems must be tested and ready. Daya Bay Antineutrino Detector Testing Dan Dwyer 13/14 DBD09: Oct. 12, 2009
Summary - Detector assembly is starting - Testing program - Ensure prompt data taking and analysis - AD Dry Run - Requires integrated test of all AD subsystems - Subsystem integration tests in progress Daya Bay Antineutrino Detector Testing Dan Dwyer 14/14 DBD09: Oct. 12, 2009
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