Tertiary halo simulations at 6.5 TeV (SixTrack + Fluka in IR1, SixTrack in IR5)

• Horizontal and vertical halo distributions were tracked for each beam.
• Losses on collimators are summarised in the collimation summary file. The format is
  
  1. collimator id,
  2. collimator name,
  3. number of impacting particles,
  4. number of absorbed particles,
  5. average impact parameter in mm,
  6. as 5 but in sigma.
• Protons lost (which undergo an inelastic interaction) on tertiary collimators are written out. The format is
  
  1. collimator id
  2. rotation
  3. distance to IP1 [m]
  4. horizontal position x [mm]
  5. angle xp [mrad]
  6. vertical position y [mm]
  7. angle yp [mm]
  8. number of absorbed particles
  9. np
  10. number of turns at which the particle was lost.

• Horizontal halo B1
• Collimation summary file.
• Hits on TCTH.4L1.B1 (left of IP1)
• Hits on TCTV.4L1.B1 (left of IP1)
• Hits on TCTH.4L5.B1 (left of IP5)
• Hits on TCTV.4L5.B1 (left of IP5)
• 63,852,800 simulated primary halo protons
  
• Vertical halo B1
• Collimation summary file.
• Hits on TCTH.4L1.B1 (left of IP1)
• Hits on TCTV.4L1.B1 (left of IP1)
• Hits on TCTH.4L5.B1 (left of IP5)
• Hits on TCTV.4L5.B1 (left of IP5)
• 63,392,000 simulated primary halo protons
  
• Horizontal halo B2
• Collimation summary file.
• Hits on TCTH.4R1.B2 (right of IP1)
• Hits on TCTV.4R1.B2 (right of IP1)
• Hits on TCTH.4R5.B2 (right of IP5)
• Hits on TCTV.4R5.B2 (right of IP5)
• 63,878,400 simulated primary halo protons
  
• Vertical halo B2
• Collimation summary file.
• Hits on TCTH.4R1.B2 (right of IP1)
• Hits on TCTV.4R1.B2 (right of IP1)
• Hits on TCTH.4R5.B2 (right of IP5)
• Hits on TCTV.4R5.B2 (right of IP5)
• 64,019,200 simulated primary halo protons
  

• starting conditions in both planes produced with SixTrack simulations
• Machine conditions as in 2015 Run 2: 6.5 TeV, beta*=80 cm, TCTs at 13.7 sigma
• Cutoff at 20 MeV
  
• No biasing used
  
• FLUKA geometry by L.S. Esposito modified by R. Kwee

• Data file (ascii) for IR1 B1 4,752,000 primary events
  SixTrack conversion factor: 6.87e-6 TCT hits per lost particle
  
• Data file (ascii) for IR1 B2 3,646,000 primary events
  SixTrack conversion factor: 8.91e-6 TCT hits per lost particle
  

1. primary event number
2. FLUKA particle type ID
3. particle generation number
4. Stastical weight
5. x (cm)
6. y (cm)
7. directional cosine w.r.t X-axis
8. directional cosine w.r.t Y-axis
9. Total energy (GeV)
10. Kinetic energy (GeV)
11. particle age since primary event (sec)
12. x coordinate of initial inelastic proton interaction in TCT or on beam-gas (cm)
13. y coordinate of initial inelastic proton interaction in TCT or on beam-gas (cm)
14. z coordinate of initial inelastic proton interaction in TCT or on beam-gas (cm)

• Data file (ascii) for IR1 B1 4,702,400 primary events
  SixTrack conversion factor: 6.87e-6 TCT hits per lost particle
• Data file (ascii) for IR1 B2 4,742,400 primary events
  SixTrack conversion factor: 8.91e-6 TCT hits per lost particle

• Data file (ascii) for IR1 B1  287,370,000 primary events
  SixTrack conversion factor: 6.87e-6 TCT hits per lost particl
• Data file (ascii) for IR1 B2  295,320,000 primary events
  SixTrack conversion factor: 8.91e-6 TCT hits per lost particl

1. FLUKA run number
   
2. ID of primary particle within FLUKA run
   
3. FLUKA particle type (an explanation of the numbers can be found here)
4. kinetic energy (GeV)
5. statistical weight (should be 1 for all particles)
6. X (cm)
7. Y (cm)
8. directional cosine w.r.t X-axis
9. directional cosine w.r.t Y-axis
10. time (s) since start of primary particle
11. total energy (GeV)
12. X_start (cm) : starting position of primary particle
13. Y_start (cm)
14. Z_start (cm)
15. t_start (s) : starting time of primary particle where t=0 is at the entrance of the TCTH. All set to 0 in this run.