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LINAC DESIGN – G.A. May 6,’04

LINAC DESIGN – G.A. May 6,’04. P.Ostroumov (ANL) Calculations Assumptions SCRF LINAC starts at 87 MeV Axial Transit-time factor in uniform approximation Phase=30 0 for b <1, Phase=16 0 for b =1 6-cells and 8-cells cavities. LINAC DESIGN RESULTS. 6-CELLS

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LINAC DESIGN – G.A. May 6,’04

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  1. LINAC DESIGN – G.A. May 6,’04 • P.Ostroumov (ANL) Calculations • Assumptions • SCRF LINAC starts at 87 MeV • Axial Transit-time factor in uniform approximation • Phase=300 for b<1, Phase=160 for b=1 • 6-cells and 8-cells cavities

  2. LINAC DESIGN RESULTS • 6-CELLS • b=0.47 87 –170 MeV 22 Cavities 3 Cryos • b=0.61 170-349 MeV 32 Cavities 4 Cryos • b=0.81 349-1095 MeV 82 Cells 11 Cryos • b=1.00(TESLA) 1095-8019 MeV 316 Cells 40 Cryos Total 58 Cryos • 8-CELLS • b=0.47 18 Cells 3 Cryos • b=0.61 26 Cells 4 Cryos • b=0.81 60 Cells 8 Cryos • b=1.00(TESLA) 316 Cells 40 Cryos Total 55 Cryos

  3. PROBLEMS ? • Wrong Proton Mass ? • Actual proton mass is 938 MeV • Minor problem, changes slightly final energy (by few MeVs) • TESLA Cavities used always at b=1 • Right • Wrong (?)

  4. P.O. CORRECTED (?) • 6-CELLS • b=0.47 87 –170 MeV 22 Cavities3 Cryos • b=0.61 170-349 MeV 32 Cavities 4 Cryos • b=0.81 349-1095 MeV 82 Cavities11 Cryos • b=1.00(TESLA) 1095-8019 MeV 330 Cavities 42 Cryos • Total 60 Cryos • 8-CELLS • b=0.47 18 Cavities3 Cryos • b=0.61 26 Cavities 4 Cryos • b=0.81 60 Cavities8 Cryos • b=1.00(TESLA) 328 Cavities 41 Cryos • Total 56 Cryos

  5. Playing Along in P.O. Approximations • 6-CELLS • b=0.47 87 –170 MeV 24 Cavities3 Cryos • b=0.62 170-352 MeV 32 Cavities 4 Cryos • b=0.81 352-850 MeV 48 Cavities6 Cryos • b=1.00(TESLA) 850-8029 MeV 380 Cavities 48 Cryos • Total 61 Cryos • 10-CELLS • b=0.47 24 Cavities3 Cryos • b=0.62 32 Cavities 4 Cryos • b=0.81 48 Cavities6 Cryos • b=1.00(TESLA) 330 Cavities 42 Cryos • Total 55 Cryos

  6. Playing Along in new Scenario (Ein = 130 MeV for Elliptical Cavities) • 8-CELLS • b=0.57 130 - 302 MeV 32 Cavities4 Cryos • b=0.75 302 - 855 MeV 56 Cavities7 Cryos • b=1.00(TESLA) 855 - 8005 MeV 358 Cavities 45 Cryos • Total 56 Cryos • 8-CELLS (P.O. – baseline approach) • b=0.47 18 Cavities3 Cryos • b=0.61 26 Cavities 4 Cryos • b=0.81 60 Cavities8 Cryos • b=1.00(TESLA) 328 Cavities 41 Cryos • Total 56 Cryos

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