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Published byMae Allison Modified over 9 years ago
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1 Status of the V0 electronics Tests of photomultipliers Signal treatment Electronics Milestones V0A V0C
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2 Photo-multiplier from T0R5505R5946R7761 Tube/cathode Ø/length32/20/6525/17.5/4038/27/5039/27/50 Number of stages15 1619 HV max 25002300 Gain 2000 V at 0 T/0.5 T2/1.6 10 5 5/2.3 10 5 10 6 /4.3 10 5 10 7 /3 10 6 Rise/transit (ns)1.5/61.5/5.61.9/7.22.6/7.5 Dark current (typ/max) (nA)5/205/30 15/100 Pulse linearity (2%) (mA)?180360500
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3 Charge, gain, time resolution 19 16 19 16 15 Signal x 10 + 25 m cable
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4 Pulse treatment
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5 FEE
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6 Timing for BB and BG C C C A A A
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7 Minimum-bias triggers Starting from the discriminator or the NINO signal BB signal detected in time windows centered at +11 ns (V0A) and +3 ns (V0C) BGA signal detected in time windows centered at -11 ns (V0A) and +3 ns (V0C) BGC signal detected in time windows centered at +11 ns (V0A) and -3 ns (V0C) bbc bba
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8 V0 mechanics milestones Fall 2004: End 2004: March 2005: sector ‘0’ of V0A (Mexico) and V0C (Lyon) PRR submission Fall 2005: V0C ready for commissioning,… PMT characterization (Lyon) (MIP from each channel,… noise, gain of each PMT) End 2005: V0A ready for commissioning,… PMT characterization (Mexico) (MIP from each channel,… noise, gain of each PMT) Spring 2006: June 2006: V0C ready for installation in ALICE (array + fibre bundles + PMT mechanics) End 2006: V0A ready for installation in ALICE (array + fibre bundles + PMT mechanics) Responsibles: Mechanics: J.Y. Grossiord (Lyon), XXXX (Mexico)
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9 V0 electronics milestones Fall 2004: electronics concept finalization End 2004: CIU design prototype test (charge, time, pre-process of triggers) March 2005: Fall 2005: (final trigger signal, collection of the data, …interface TTC/FEE) CCIU and TTCIU design prototype test PRR submission End 2005: CIU, CCIU, TTCIU electronic design, setting Spring 2006: electronics design ready for realization June 2006: electronics construction End 2006: electronics test, calibration electronics ready for installation in ALICE Responsibles: Electronics: Y. Zoccarato
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10 V0 milestones Fall 2004: electronics concept finalization End 2004: CIU design prototype test March 2005: sector ‘0’ of V0A (Mexico) and V0C (Lyon) PRR submission Fall 2005: V0C ready for commissioning, PMT characterisation (Lyon) CCIU and TTCIU design prototype test PRR submission End 2005: V0A ready for commissioning (Mexico) CIU, CCIU, TTCIU electronical scheme Spring 2006: electronics design ready for realization June 2006: V0C ready for installation in ALICE electronics construction End 2006: V0A ready for installation in ALICE electronics test, calibration electronics ready for installation in ALICE Responsibles: Electronics: Y. Zoccarato Mechanics: J.Y. Grossiord (Lyon), XXXX (Mexico)
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11 V0 cost for 64 channels (R5946) labelunitspareunit pricetotal price PM R594664-1712109568 HV SY2527/A1733P1/6-8812/292926386 VME1-9000 Electronics64270000 Mechanics PM + boxes2-10002000 Scint. V0A/V0C (m 2 )2 x.6-1500 WLS F. V0A/V0C (m)2 x 346-3.32284 Clear F. V0A/V0C (m)2 x 3456-1.06912 Total in €227650 Total in SF341475 HV cab. V0A/V0C (m)270-5.81566 HV con. V0A/V0C(448)-4756 Sig. cab. V0A/V0C (m)2 x 1600-2.06400 Sig. con. V0A/V0C(2 x 576)-11136 Total in SF365333
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