Kinetic Energy Spectra of pi+, pi-, mu+, mu- in addition to sum of all from the 20to4T5m Configuration OUTLINE 20to2T5m Configuration (zmax = 52 m) 20to2T5m Configuration (zmax = 15 m) 20to4T5m Configuration (zmax = 52 m)

Kinetic Energy Spectra of pi+, pi-, mu+, mu- in addition to sum of all from the 20to4T5m Configuration OUTLINE 20to2T5m Configuration (zmax = 52 m) 20to2T5m Configuration (zmax = 15 m) 20to4T5m Configuration (zmax = 52 m) www.phwiki.com

Kinetic Energy Spectra of pi+, pi-, mu+, mu- in addition to sum of all from the 20to4T5m Configuration OUTLINE 20to2T5m Configuration (zmax = 52 m) 20to2T5m Configuration (zmax = 15 m) 20to4T5m Configuration (zmax = 52 m)

Philipsen, Mike, News Director; Manager of Public Affairs has reference to this Academic Journal, PHwiki organized this Journal Kinetic Energy Spectra of pi+, pi-, mu+, mu- in addition to sum of all from the 20to4T5m Configuration X. Ding Front End Meeting June 23, 2015 OUTLINE 20to2T5m in addition to 20to4T5m configuration Field map Setting of BE windows Target in addition to beam parameters Comparison of KE spectra of pi+, pi-, mu+, mu- in addition to sum of all positive in addition to negative particles at z = 2, 5, 10, 20, 30, 40, 50 m between 20to2T5m in addition to 20to4T5m configuration. 20to2T5m Configuration (zmax = 52 m)

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20to2T5m Configuration (zmax = 15 m) 20to4T5m Configuration (zmax = 52 m) 20to4T5m Configuration (zmax = 15 m)

Fieldmap on SC axis 20to2T5m: B = 2.00 T as long as z > 10 m 20to4T5m: B = 4.00 T as long as z > 10 m Target Containment Vessel The containment vessel is cooled by He-gas flow between its double walls. The outer cylinder extends over -46 < z < 170 cm, with outer radius r = 15 cm. The inner cylinder extends over -45 < z < 169 cm, with inner radius r = 14 cm. The downstream faces of the vessels are Be windows, 1 mm thick. Magnet Modules (front end as long as 5 < z < 50 m) The Front End as long as 5 < z < 50 m consists of nine 5-m-long superconducting magnet modules, each with internal tungsten shielding around the 23-cm-radius beam pipe. The latter has thin Be windows, 0.05 mm thick, at each end of a magnet module, in addition to is filled with He gas at 1 atmosphere. This model does not include a chicane. Carbon Target in addition to Beam Parameters Simulation code: MARS15(2014) with ICEM 4 = 1 (default) in addition to ENRG 1 = 6.75, 2 = 0.02, 3 = 0.3, 4 = 0.01, 5 = 0.05, 6 = 0.01, 7 = 0.01 ; Graphite density: 1.8 g/cm3; Beam pipe radius: 14 cm (initial) in addition to 23 cm (final); Proton beam: 6.75 GeV (KE), 1 MW, beam radius at 0.2 cm in addition to beam angle at 65 mrad, waist in addition to 5 m geometric emittance at z = 0 m (intersection point), launched at z = -100 cm; Carbon rod: target length at 80 cm, rod radius at 0.8 cm in addition to tilt angle to SC axis at 65 mrad. Energy Spectra (z = 2 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 5 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 10 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 20 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 30 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 40 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Energy Spectra (z = 50 m) pi+: left-up, pi-: left-down, sum: middle, mu+: right-up, mu-: right-down Summary More high-KE particles are captured in 20to4T5m configuration. In 20to2T5m configuration, KE selection of 40 < KE < 180 MeV is used to count yield at z = 50 m ( peak around 140 MeV). In 20to4T5m configuration, there is a dent around 100 MeV at z = 40, 50 m. Exchanging with the 20to2T5m transport channel, we still found this dent. However, the dent will disappear if we delete all BE beam windows above z > 15 m. (https://pubweb.bnl.gov/~xding/JINST/energy-spectra). So both BE windows in addition to field map seem affect our KE spectra. (4) In the 20to4T configuration, what KE selection (40 < KE < 400 MeV) will be used to count yield at z = 50 m. Should we use this KE selection as long as 20to2T5m configuration (5) We expect about only a few percent increase in particle production from 20to2T5m to 20to4T5m with KE selection of 40 < KE < 400 MeV in addition to our present BE window settings until z = 50 m. Back-Up Slides Follow Setting of BE Windows The MAT is the material. The zi is the beginning in addition to the zf is the end. The OR is the outer radius in my setting. MAT zi (cm) zf ( cm ) OR ( cm ) THICKNESS ( cm ) ---------- BeWind 1: BE 169.0 169.1 14 0.1 HE 169.1 170.0 15 0.9 BE 170.0 170.1 15 0.1 ---------- BeWind 2: BE 430.5 430.55 22 0.05 HE 430.55 431.45 23 0.9 BE 431.45 431.5 23 0.05 BeWind 3: BE 993.5 993.55 22 0.05 HE 993.55 994.45 23 0.9 BE 994.45 994.5 23 0.05 Setting of BE Windows (Cont’d) MAT zi (cm) zf ( cm ) OR ( cm ) THICKNESS ( cm ) ---------- BeWind 4: BE 1005.5 1005.55 22 0.05 HE 1005.55 1006.45 23 0.9 BE 1006.45 1006.5 23 0.05 BeWind 5: BE 1495.0 1495.05 22 0.05 HE 1495.05 1495.95 23 0.9 BE 1495.95 1496.0 23 0.0 ---------- BeWind 6: BE 1507.0 1507.05 22 0.05 HE 1507.05 1507.95 23 0.9 BE 1507.95 1508.0 23 0.05 BeWind 7: BE 2018.5 2018.55 22 0.05 HE 2018.55 2019.45 23 0.9 BE 2019.45 2019.5 23 0.05 Setting of BE Windows (Cont’d) MAT zi (cm) zf ( cm ) OR ( cm ) THICKNESS ( cm ) ---------- BeWind 8: BE 2030.5 2030.55 22 0.05 HE 2030.55 2031.45 23 0.9 BE 2031.45 2031.5 23 0.05 BeWind 9: BE 2542.0 2542.05 22 0.05 HE 2542.05 2542.95 23 0.9 BE 2542.95 2543.0 23 0.0 ---------- BeWind 10: BE 2554.0 2554.05 22 0.05 HE 2554.05 2554.95 23 0.9 BE 2554.95 2555.0 23 0.05 BeWind 11: BE 3065.5 3065.55 22 0.05 HE 3065.55 3066.45 23 0.9 BE 3066.45 3066.5 23 0.05 Setting of BE Windows (Cont’d) MAT zi (cm) zf ( cm ) OR ( cm ) THICKNESS ( cm ) ---------- BeWind 12: BE 3077.5 3077.55 22 0.05 HE 3077.55 3078.45 23 0.9 BE 3078.45 3078.5 23 0.05 BeWind 13: BE 3589.0 3589.05 22 0.05 HE 3589.05 3589.95 23 0.9 BE 3589.95 3590.0 23 0.0 ---------- BeWind 14: BE 3601.0 3601.05 22 0.05 HE 3601.05 3601.95 23 0.9 BE 3601.95 3602.0 23 0.05 BeWind 15: BE 4112.5 4112.55 22 0.05 HE 4112.55 4113.45 23 0.9 BE 4113.45 4113.5 23 0.05 Setting of BE Windows (Cont’d) MAT zi (cm) zf ( cm ) OR ( cm ) THICKNESS ( cm ) ---------- BeWind 16: BE 4124.5 4124.55 22 0.05 HE 4124.55 4125.45 23 0.9 BE 4125.45 4126.5 23 0.05 BeWind 17: BE 4636.0 4636.05 22 0.05 HE 4636.05 4636.95 23 0.9 BE 4639.95 4637.0 23 0.0 ---------- BeWind 18: BE 4648.0 4648.05 22 0.05 HE 4648.05 4648.95 23 0.9 BE 4648.95 4649.0 23 0.05 BeWind 19: BE 5159.5 5159.55 22 0.05 HE 5159.55 5160.45 23 0.9 BE 5160.45 5160.5 23 0.05 Philipsen, Mike KAET-TV News Director; Manager of Public Affairs www.phwiki.com

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