PNN1 acceptance in E949 --------------------------------- | Acceptance | Status | |-------------|-----------------| | A_trig | No | | A_acc_mu | Yes | | A_umc | No | | A_nidif | No | | A_kmu2 | Yes | | A_kpi2 | Yes | | A_piscat | Yes | | A_TD | No | | e_T.2 | No | | f_s | Yes | |-------------------------------| 1) A_trig, A_umc and A_nidif are from UMC and should be completed soon after all the cuts are finalized. 2) A_TD evaluation will be done after all the TD cuts are finalized. 3) e_T.2 evaluation needs some K_B monitor data and will be done in the last stage of analysis. |--------------------------------------------------|-------------------| |Cut | 2002 (acceptance)| 1998 (acceptance) | |--------------------------------------------------|-------------------| |SETUP_PISCAT final BOX | 1743 ( 1.00000) | 1.00000 | |PR_RF_AB | 1727 ( 0.99082) | 0.99359 | |XYHIT | 1693 ( 0.98031) | 0.98510 | |TWO-TRACK | 1685 ( 0.99527) | 0.98510 | |RNGMOM | 1651 ( 0.97982) | 0.98717 | |CHIMAX | 1586 ( 0.96063) | 0.97864 | |CL_RSDEDX | 1355 ( 0.85435) | 0.87974 | |RS_LIKE | 1344 ( 0.99188) | 0.99218 | |PR_RF | 1239 ( 0.92188) | 0.91875 | |RSSC_Z | 1184 ( 0.95561) | 0.94765 | |RS_Time-to_Z | 1169 ( 0.98733) | 0.99844 | |New CUTs | 1126 ( 0.96322) | 0.94436 | |--------------------------------------------------|-------------------- |A_PISCAT | 0.64601 +/- 0.02796 | 0.6675+/-0.0203 | |--------------------------------------------------|-------------------- 1) All orginal cuts positions still remain unchanged. 2) The neural net cut used in 1998 is replaced with the cut on matching between UTC and RSSC/RS in x-y plane. 3) The bad RS sectors and problematic RS TD energy calibration in certain runs are still included. 4) Acceptance loss in RNGMOM is due to the pion width difference used in E949, the cut position should be adjusted. 5) RS dE/dx cuts bring the largest acceptance loss. In addition to point 3), the accidential hit effect could be one of the reason. This will be readdressed after the RS energy calibration is finalized and the bug of unsaturated energy used for the expected RS layer energy is fixed. Regain some acceptance back is anticipated. 6) Six channels of RSSC have a problem in the Z position calibration. We expect the corresponding acceptance will increase a bit. |----------------------------------------|--------------------| |Cut | 2002 (acceptance)| 1998 (acceptance) | |----------------------------------------|--------------------| |SETUP_RD | 313005 ( 1.00000) | 1.00000 | |RD_TRK | 313005 ( 1.00000) | 1.00000 | |TRKTIM | 312877 ( 0.99959) | 0.99940 | |----------------------------------------|--------------------| |A_RD | 0.99959 +/- 0.00004 | 0.9994 +/- 0.0000 | |----------------------------------------|--------------------| |SETUP_RECON | 214433 ( 1.00000) | 1.00000 | |UTC/RANGE | 214433 ( 1.00000) | 1.00000 | |UTCQUAL | 206021 ( 0.96077) | 0.97146 | |TARGET | 204018 ( 0.99028) | 0.99788 | |----------------------------------------|--------------------| |A_RECON | 0.95143 +/- 0.00046 | 0.9694 +/- 0.0002 | |----------------------------------------|--------------------| |A_REST | 0.5265 +/- 0.0015 | 0.5708 +/- 0.0005 | |----------------------------------------|--------------------| |SETUP_PV | 34133 ( 1.00000) | 1.00000 | |HEX | 31928 ( 0.93540) | 0.93677 | |ONLINE PV | 30423 ( 0.95286) | 0.97308 | |STLAY | 29372 ( 0.96545) | 0.98674 | |RSHEX | 28506 ( 0.97052) | 0.97499 | |INTIME | 28386 ( 0.99579) | 0.99783 | |PVCUT | 27816 ( 0.97992) | 0.99074 | |TGPVCUT | 27515 ( 0.98918) | 0.99550 | |TGPVTR | 27515 ( 1.00000) | 1.00000 | |PASS3 PV | 24830 ( 0.90242) | 0.88375 | |----------------------------------------|--------------------| |A_PV | 0.72745 +/- 0.00241 | 0.76278 +/- 0.0007 | |----------------------------------------|--------------------| |Full-Record | 502806 ( 1.00000) | 1.00000 | |LAYER14acc | 493738 ( 0.98197) | 0.99365 | |----------------------------------------|--------------------| |A_L14 | 0.98197 +/- 0.00019 | 0.9937 +/- 0.0002 | |----------------------------------------|--------------------| |A_KMU2 | 0.3576 +/- 0.00115 | 0.4191 +/- 0.0005 | |----------------------------------------|--------------------| 1) The acceptance loss in UTCQUAL is due to the cut on the four minimum z points. It is noted that for pions the efficiency is 0.97337 and there is very tiny difference between E787 and E949. 2) The method of how to evaluate the A_PV is still not well established in E949. 3) The acceptance loss in A_L14 is due to a bug in kofia routine lay14.F, in which the dead sector definition was hardcoded in E787 and is not valid any more for E949. 4) Online stopping layer at 20 and 21 in E949 accounts for the additonal STLAY acceptance loss. |----------------------------------------|--------------------| |Cut | 2002 (acceptance)| 1998 (acceptance) | |----------------------------------------|--------------------| |SETUP_OPS | 4529 ( 1.00000) | 1.00000 | |OPSVETO | 4315 ( 0.95275) | 0.97856 | |OPSVETO_LKB | 4315 ( 1.00000) | 1.00000 | |----------------------------------------|--------------------| |A_ops | 0.95275 +/- 0.00315 | 0.9786 +/- 0.0012 | |----------------------------------------|--------------------| |SETUP_tgkin | 4141 ( 1.00000) | 1.00000 | |TGDEDX | 3878 ( 0.93649) | 0.96961 | |TGER | 3876 ( 0.99948) | 0.99971 | |TGLIKE | 3741 ( 0.96517) | 0.97740 | |EPITG | 3731 ( 0.99733) | 0.99955 | |EPIMAXK | 3592 ( 0.96274) | 0.98119 | |TGEDGE | 3535 ( 0.98413) | 0.99757 | |TGCCDPF | 3535 ( 1.00000) | 0.98894 | |PHIVTX | 3418 ( 0.96690) | 0.97903 | |PHIVTX2 | 3418 ( 1.00000) | 1.00000 | |DRP | 3402 ( 0.99532) | 0.99504 | |----------------------------------------|--------------------| |A_tgkin | 0.82154 +/- 0.00595 | 0.8930 +/- 0.0026 | |----------------------------------------|--------------------| |A_kpi2 | 0.78272 +/- 0.00623 | 0.8739 +/- 0.0028 | |----------------------------------------|--------------------| 1) The target range is observed to be longer than in E787 due to the more spreading beam profile in x-y plane, the privous high thresholds for the target range and energy cause the acceptance loss in the TGDEDX and should be adjusted. 2) The pion fiber likelihood function used in E787 has not been checked for whether or not it is still valid in E949. 3) It is not clear if the accidtenal hit in the pion fiber will be the reason accounting for the acceptance loss in EPIMAXK. 4) The acceptance loss for the cuts on the edge fibers TGEDGE could be due to a second beam overshooting as we found in IC. Without TD information, we may not do anything to improve this situation. 5) The PHIVTX acceptance loss is still unknown. |-------------------------------------------------| | | Nloss| Nacc | A_acc_mu | |-------------------------------------------------| | 2002| 1329| 190194| 0.99306+/- 0.00019 | |-------------------------------------------------| | 1998| 10844| 1180235| 0.99090+/- 0.00009 | |-------------------------------------------------| No difference in the muon-veto accidential loss.