Effective Area

Aeff, efficiencies, and event passing rate are done by Check_Sim_v36.7_aeff_sig_eff_evt_rate_combine_old_compariosn_w_err_total_w_edge

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Fig. 137 A23 Aeff

Effective areas of corresponding simulation set: 7 set for A2 and 9 set for A3

Applied new gain model (antenna / signal chain)

A2: config 7 and A3: config 8/9 are have low area because of less # of channels (75 %) are contributed for triggering detector

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Fig. 138 A23 Aeff with all cuts

+CW: cw ratio cut, +Spark: spark event, +Cal: calpulser cut, +Corr Zenith & +Corr Z: surface cut by interferometry, +Ver Zenith & +Ver Z: surface cut by AraVertex

Plus in the legends mean it is including previous cuts

All the cuts are clustered in the trigger level except surface (corr) and signal/background cuts (S / Ba)

Dashed line is trigger level area from previous A23 analysis

A2 Signal Efficiency in Energy

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Fig. 139 A2 Efficiency in Energy

CW Cuts are taking out high energy signal

  • unfortunate mis-filtering of strong amplitude signal

Total surface cuts took out ~20% of efficiency

A3 Signal Efficiency in Energy

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Fig. 140 A3 Efficiency in Energy

CW Cuts are taking out high energy signal

  • unfortunate mis-filtering of strong amplitude signal

Calpulser cut also had contribution in high energy because of large cut region

Total surface cuts took out ~20% of efficiency

Config 7 & 8 have a lower efficiencies because of the lack of accuracy of reconstruction by only using 4 channels per polarization

A2 Signal Efficiency in SNR

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Fig. 141 A2 Efficiency in SNR

SNR is calculated in ‘banila’ status

  • No CW/band-pass filter

  • RMS is avg. of software trigger

  • P2P is same as FFTtools method

3rd highest SNR among the channels are selected to represent the efficiency

A3 Signal Efficiency in SNR

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Fig. 142 A3 Efficiency in SNR

SNR is calculated in ‘banila’ status

  • No CW/band-pass filter

  • RMS is avg. of software trigger

  • P2P is same as FFTtools method

3rd highest SNR among the channels are selected to represent the efficiency

A2 Signal Efficiency in Radius

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Fig. 143 A2 Efficiency in Radius

A3 Signal Efficiency in Radius

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Fig. 144 A3 Efficiency in Radius

Event rate

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Fig. 145 A23 event rate

GZK Kotera model is used

Total ~0.35 events (A2: 0.19, A3: 0.16) are expected based on livetime and analysis

Sensitivity

This is done by Check_Sim_v37_sensitivity_total

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Fig. 146 A23 Sensitivity

Factor ~4 improvement from previous A23 analysis (2 x 4 yrs)

  • 1.7 from increased livetime and 2.3 from new gain model and analysis

Dashed line is projection of single event sensitivity in 10 years with all 5 stations

  • Only A23 data is updated. other stations are same as previous analysis