Gantry Design Dr Dejan Trbojevic Brookhaven National Laboratory

Gantry Design Dr. Dejan Trbojevic Brookhaven National Laboratory 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 1

The state of the art proton gantry at PSI 3. 2 m 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 3. 2 m 2

The state of the art proton gantry at PSI 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 3

Proton only gantry – warm small iron magnets 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 4

Scanning – proton isocentric gantry ± 10 cm Magnification 5 X 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 5

State of the Art Gantry at Heidelberg Weight of the transport components – 135 tons Total weight = 630 tons - 19 m long. WEIGHT and SIZE 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 6

2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 7

4. 1 m DIMENSIONS of the CARBON GANTRY 8. 6 m 20. 8 Carbon Ek=400 Me. V/u Br = 6. 35 Tm ( q= Bl/Br ) Warm iron magnets: B=1. 6 T then r ~ 4. 0 m Superconducting magnets B=3. 2 T then r ~ 2. 0 m 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 8

Range of momentum = range kinetic energy ΔEk carbon=400 -195. 4 Me. V/u [27. 3 -8. 2 cm] ΔEk carbon=195. 4 -91. 5 Me. V/u [8. 2– 2. 2 cm] ΔEk proton=250 -118. 81 Me. V [37. 8 -10. 4 cm] ΔEk proton=118. 81 -54. 6 Me. V [10. 4 -2. 6 cm] 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 9

Orbit offsets in the carbon NS-FFAG gantry 2/26/2021 ANGD ANGF B D (T) B F (T) GD(T/m) GF(T/m) 0. 112 -0. 0146 4. 557 -0. 3851 -90. 8 151. 1 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 10

Magnetic field required in the pipe and estimated maximum field in the coils 3. 67 T 9. 7 mm Dipole, quad coils insulation BD max = Bd + GD x = 4. 56 - 90. 8 * -6. 75 mm 5. 17 T 13. 96 mm 1. 72 T BF max = Bf + GF x =-0. 385 + 151. 1* r Beam -13. 75 mm 1. 69 T . 1 2 r= 2/26/2021 m 5 c m c 3. r=2 4 cm Beam size : σT=√σ2 + (D dp/p)2 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 11

NS-FFAG superconducting carbon gantry protected by the patent number: US 2007/0262269 A 1 0. 612 m 2. 95 0. 5 m 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 2. 6586 m θ=0. 063 rad Bmax=1. 334 T 0. 3 m 1. 586 m o 72 2. 2086 m 4. 091 m 0. 3 m 85 m 12

2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 13

Tracking particles in the carbon gantry for the energy range of 190 -400 Me. V/u collaboration with Vasily Morozov-Jefferson Lab for the six gradients adjustment 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 14

All at once: Fixed field & fixed focusing Magnification 30 TIMES 9 mm 400 Me. V/u 2 mm 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 15

Data from the PTC gantry program: LL E C R E P SU L L E C R E P U S 2/26/2021 SUPER CELL GRADIENTS KBF 1=166. 08366 D 0/BRHO; KBD 1=-86. 418383 D 0/BRHO; KBF 2=167. 26062 D 0/BRHO; KBD 2=-78. 352246 D 0/BRHO; KBF 3=138. 44318 D 0/BRHO; KBD 3=-93. 449917 D 0/BRHO; KBD 4=-87. 353011 D 0/BRHO; Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 16

CARBON GANTRY h=4. 091 m without magnification 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 17

NS-FFAG gantry with permanent magnets 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 18

NS-FFAG ring with permanent Halbach magnets Accelerates protons from 31 -250 Me. V 2/26/2021 r= m 4 8 2. 60 cells, C=17. 82 m Orbits are magnified 20 times Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 19

What is innovative: extreme focusing LQF/2=6. 05 cm LQD=9. 2 cm 16 mm 250 Me. V -10. 2 mm QF/2 B QD LB=3. 8 cm B QF/2 31 Me. V LB=3. 8 cm 29. 7 cm 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 20

Permanent Halbach magnet NS-FFAG gantry 14 cells-27 cells r=2. 71 m 162 o h 1=2. 61 m h 2=3. 172 m o 84 BRHO = 1. 7372345376900 Tm ANG=2 p/120 = 0. 05235987755982988 BYD= 2. 0214 T KF =160. 0 T/m KD= -175. 0 T/m LCELL=0. 285081466313463 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 21

216 292 400 Me. V/u 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 22

AML combined function magnet design 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 23

BNL- combined function magnet design 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 24

BNL- combined function magnet design DIPOLE QUADRUPOLE SEXTUPOLE 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 25

CRYO-COOLERS: reliable, maintenance free, easy to operate 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 26

SUMMARY: 1. NS-FFAG gantries provide transfer of carbon ions with Δp/p=± 20 % (200400 Me. V – or - 100 -200 Me. V). Large momentum acceptance. 2. Weight is reduced for one or two orders of magnitude. 3. Size of NS-FFAG the carbon gantry is of PSI proton one. 4. Operation is simplified as the magnetic field is fixed. 5. Scanning system is with SAD=∞. 6. Beam size is adjustable with the triplet magnets. 7. Triplet magnets do not need to be superconducting. 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 27

Proton gantry – scanners are also bends applicable for i. RCMS as the scanners are also 15 Hz X-ray 2. 95 m Scanner 1+bend Scanner 2+bend 2/26/2021 Dr. Dejan Trbojevic –PASI'13 WG 5 Schedule - Accelerator Applications-WED-April 3 pm-GMT 28