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HMPID weekly meeting

09/07/2013

Performance studyG. Volpe, Shivani Bansal

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Analyzed periods : 10b, 10c, 10d, 10h, 11a, 11b, 11c, 11d, 11e, 11f, 11h, 12a, 12b, 12c,12d,12e,12f,12g.(very low statistic)

10b, 10c, 11c, 11d, 11f : p-p 7 TeV10h, 11h: Pb-Pb 2.76 ATeV11a: p-p 2.76 TeV12a, 12b , 12c, 12d, 12e, 12f, 12g: p-p 8 TeV

What has been studied:● Photon Cluster Charge Distribution and gain (A0) per HV sector● Number of Photons vs sin2(qckov) per photocatode.● Number of photons has been normalized for gain.● Number of Pads vs sin2(qckov) per photocatode. (statistics not enough)

Tracks selection:● primary tracks selected using standard cuts;● for the number of photons study full accepted rings have been used, applying a cut on the corresponding track position.

Data statistics

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RICH 0: Gain

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RICH 0: Number of photons

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RICH 1: Gain

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RICH 1: Number of photons

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RICH 2: Gain

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RICH 2: Number of photons

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RICH 3: Gain

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RICH 3: Number of photons

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RICH 4: Gain

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RICH 4: Number of photons

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RICH 5: Gain

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RICH 5: Number of photons

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RICH 6: Gain

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RICH 6: Number of photons

Number of photons for LHC 10b

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* We have used a strip of 10 cm in the y-direction* p>3Gev

Number of photons for LHC 10b

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* We have used a strip of 10 cm in the y-direction* p>4Gev

Number of photons for LHC 10b

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* We have used a strip of 5 cm in the y-direction* p>3Gev

Number of photons for LHC 10b

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* We have used a strip of 5 cm in the y-direction* p>4Gev

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Fully accepted photon rings: Track 0

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Fully accepted photon rings: Track1

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Fully accepted photon rings: Track2

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Fully accepted photon rings: Track3

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Fully accepted photon rings: Track4

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Fully accepted photon rings: Track5

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Fully accepted photon rings: Track6

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Fully accepted photon rings: Track7

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Fully accepted photon rings: Track8

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Fully accepted photon rings: Track9

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Fully accepted photon rings: Track10

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Fully accepted photon rings: Track11

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Fully accepted photon rings: Track12

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Fully accepted photon rings: Track13

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Fully accepted photon rings: Track14

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Fully accepted photon rings: Track15

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Fully accepted photon rings: Track16

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Fully accepted photon rings: Track17

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Fully accepted photon rings: Track18

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Fully accepted photon rings: Track19

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Fully accepted photon rings: Track20

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Fully accepted photon rings: Track21

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Fully accepted photon rings: Track22

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Fully accepted photon rings: Track23

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Fully accepted photon rings: Track24

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Fully accepted photon rings: Track25

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Fully accepted photon rings: Track26

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Fully accepted photon rings: Track27

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Fully accepted photon rings: Track28

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Fully accepted photon rings: Track29

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Backup

Number of photons for LHC 10b

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Normalized Number of photons for LHC 10b

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PHOTON CLUSTER CHARGE DISTRIBUTION: RICH3, LHC10b

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No. of photons vs sin2(qckov): RICH3, LHC10b

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No. of pads vs sin2(qckov): RICH3, LHC10b

PHOTON CLUSTER CHARGE DISTRIBUTION: RICH0, LHC11b

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No. of photons vs sin2(qckov): RICH0, LHC11b

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No. of pads vs sin2(qckov): RICH0, LHC11b