Secondary beam analysis – PS and SPS

Started May 22, 2012

rpc/PS_pionpion_2.fpion_11.kumac orpion_11_1GeV.kumac

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 pions: C1 = C2 = 0 and BC<8 muons: N > 20 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Not enough memory for run 109

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = C2 = 0 and BC<8 and R > 2.0 muons: N > 10 and C1 = C2 = 0 and BC>20 Hits in last 2 layers

rpc/PS_pion/PS_summary.kumac

No calibration whatsoever Calibration with muon response

Fits

EE

cEE

cEEE

β α c

Fit 1 65.67± 0.1

Fit 2 61.3± 0.3 11.0± 0.3

Fit 3 0.0 ± 2.9 61.3 ± 0.2 11.0 ± 0.2

Calibration study

N

NNN Calib

0

α=0.4This is interesting. It appears that a linear calibration does not work as well as a calibration attenuated by a power…

rpc/PS_pion/PS_summary_alpha.kumacruns calib_1.f

Positive beam rpc/PS_pionpion_2.fpion_11_pos.kumac

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = 0 and C2 = 1 and BC<8 and R > 2.0 protons: C1 = 0 and C2 = 0 and BC<8 and R > 2.0 muons: N > 10 and C1 = 0 and C2 = 1 and BC>20 and Hits in last 2 layers and r<2.0

Run 660177

Run 660178

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = 0 and C2 = 1 and BC<8 and R > 2.0 protons: C1 = 0 and C2 = 0 and BC<8 and R > 2.0 muons: N > 10 and C1 = 0 and C2 = 1 and BC>20 and Hits in last 2 layers and r<2.0

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = 0 and C2 = 1 and BC<8 and R > 2.0 protons: C1 = 0 and C2 = 0 and BC<8 and R > 2.0 muons: N > 10 and C1 = 0 and C2 = 1 and BC>20 and Hits in last 2 layers and r<2.0

Event selection

all: 1 cluster in layer 0 with at most 3 hits

electrons: C1 = C2 =1 and BC < 8 pions: C1 = 0 and C2 = 1 and BC<8 and R > 2.0 protons: C1 = 0 and C2 = 0 and BC<8 and R > 2.0 muons: N > 10 and C1 = 0 and C2 = 1 and BC>20 and Hits in last 2 layers and r<2.0

β α c

Fit 1 65.67± 0.1

Fit 2 61.3± 0.3 11.0± 0.3

Fit 3 0.0 ± 2.9 61.3 ± 0.2 11.0 ± 0.2

p fit 54.4 ± 0.6 20.2 ± 1.7

SPS Run Plan

Rates

Spills of 9 seconds every 45 seconds -> 720 seconds/hour or 17,280 seconds/day At 50 GeV assume maximum of 100 Hz -> 72,000 events/hour or 1,728,000 events/day At 100 GeV assume maximum of 50 Hz -> 36,000 events/hour or 864,000 events/day

Data sets

Assume minimum of 500,000 events per energy point

Overall plan

Start June 4th in evening (days start at 8 am) 4,5,7,8 -> -50 GeV 6 -> Machine development 9,10, 11, 12 -> -180 13,14,15,16,17 -> +180

July 30 - August 6 -> 7 days: muons, (+180 GeV), high energy run (<300 GeV) November 2-9 -> 7 days: muons (+180 GeV), reserve or high energy again

-120 GeV running (4.5 days)

50, 40 (e and pions), {30 (e and pions),} 60, 80, 100, 120

-180 GeV running (2 days)

120, 150, 180

-30 GeV running (1 day)

{30 (e and pions),} 20 (e and pions), {10 (e and pions)}

+180 GeV running (5 days)

Muons 60, 70, 80, 90 (with Cerenkov tagging of pions) 120, 150, 180

660217

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: C1 = 0 and C2 = 0 and IL>2 and and no hits in last 4 layersmuons: BC>20 and Hits in last 4 layers and r<3.0 𝜎

𝐸=

89.2%√𝐸

𝜎𝐸

=95.5 %√𝐸

660211

660224

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: No hits in last 4 layersmuons: BC>20 and hits in last 4 layers and r<3.0 𝜎

𝐸=

97.3%√𝐸

𝜎𝐸

=98.2%√𝐸

660223

660227

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: No hits in last 4 layersmuons: BC>20 and hits in last 4 layers and r<3.0 𝜎

𝐸=

105.6 %√𝐸

𝜎𝐸

=106.6%√𝐸

660226

660229

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: No hits in last 4 layersmuons: BC>20 and hits in last 4 layers and r<3.0 𝜎

𝐸=

105.9 %√𝐸

𝜎𝐸

=106.7 %√𝐸

660228

June 7, 2012Study of time difference

- Some hits far off in both + and – direction- From now on, only take -18,-19

fort.91pion_19.kumac

𝜎𝐸

=117.9%√ 𝐸

660233

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: No hits in last 4 layersmuons: BC>20 and hits in last 4 layers and r<3.0

𝜎𝐸

=116.8 %√ 𝐸

660234

Momentum # of events

30 692,285

40 325,803

50 886,201

60 362,840

80 0

100 0

120 15,476

TOTAL 2,282,705

Event selection

all: 1 cluster in layer 0 with at most 3 hits

pions: No hits in last 4 layersmuons: BC>20 and hits in last 4 layers and r<3.0

𝜎𝐸

=116.7 %√𝐸