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Physics cases for tracking

Physics cases for tracking

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Physics cases for tracking

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  1. Physics cases for tracking Calculations made by Lisbon and Sevilla. Similations by D. Rodriguez (Huelva)

  2. 19C at the Low Energy Branch (LEB) Settings 1: 48Ca energy: 400 MeV/u. Graphite target:  = 3 g/cm2 Degrader 1: Al with  = 20.9 g/cm2. Degrader 2: Al with  = 10.5 g/cm2. Without contaminants. Settings 2: 48Ca energy: 400 MeV/u. Graphite target:  = 3 g/cm2 Degrader 1: Al with  = 20.9 g/cm2. Same yield of 20N and 19C. Calculations courtesy of David Boutin

  3. The Low Energy Branch (LEB) 19C estimates Settings 1

  4. 11Be 19C Beam parameters and tracking system <E(11Be)> = 38 MeV/u <E(19C)> = 8.4 MeV/u EFWHM = 3 MeV/u • x (19C)= 344  mm mrad • y (19C)= 376  mm mrad •  x (11Be)= 344  mm mrad •  y (11Be)= 376  mm mrad 30 cm C8H8 (for 11Be) 1 mg/cm2 Diameter: 10 cm 2 m Track1 DSSSD (20 m) SeD? 11Be Track2 DSSSD (20 m) SeD? 19C 208Pb (for 19C) 1 mg/cm2 Diameter: 10 cm

  5. Detector setup E1E2E/ E3 E • Detection set-ups: • - E1 : DSSSD Si-40m. • - E2 : DSSD 200 m. • E/E3 : Single PAD 1.5 mm. • E : CsI 6 cm. • Pulse shape analysis. • Time of flight. 40º 1) d = 17 cm Angular resolution: 2º. Pixel: 3x3 mm2. 30º 18C 19C 19C @ 160 MeV 10º 2) d = 34.4 cm Angular resolution: 2º Pixel: 6x6 mm2 Beam Target 10Be 0º d 3) d = 68.8 cm. Angular resolution: 2º Pixel: 1.2x1.2 cm2

  6. 140 140 140 120 120 120 100 100 100 80 80 80 60 60 60 40 40 40 20 20 20 19C Elastic scattering + break-up (no tracking) 2) 1) E /MeV E /MeV 19C 19C 18C 18C 50100 150 200 250 50100 150 200 250 Etotal /MeV Etotal /MeV E = E1+ E2 Detector resolution 2% (Si) E /MeV 3) 19C 18C 18C 50100 150 200 250 Etotal /MeV

  7. 140 140 140 120 120 120 100 100 100 80 80 80 60 60 60 40 40 40 20 20 20 19C Elastic scattering + break-up (tracking) 1) 2) E /MeV 19C 18C 18C 19C t = 1 ns 50100 150 200 250 50100 150 200 250 Etotal /MeV Etotal /MeV 3) 3) E /MeV 18C 3) 19C High time resolution needed SeD 50100 150 200 250 Etotal /MeV

  8. 140 140 140 120 120 120 100 100 100 80 80 80 60 60 60 40 40 40 20 20 20 11Be Elastic scattering + break-up 3) No tracking 10Be E /MeV 10Be 11Be E = E1+ E2 + E3 Detector resolution 2% (Si) Detector resolution 10% (CsI) 50150 250 350 450 Etotal /MeV 3) Tracking 3) Tracking+ pixel E /MeV t = 60 ps 10Be 11Be 50150 250 350 450 50150 250 350 450 Etotal /MeV Etotal /MeV

  9. Low energy vs high energy

  10. Angular resolution: 0.5º-1º Timing: 0.7-0.3 ns Tracking requirements for low energy beams (5-20 MeV/u)

  11. Transverse momentum resolution • pT = m v q