TCT BLM response from tertiary halo at 6

TCT BLM response from tertiary halo at 6. 5 Te. V E. Skordis On behalf of the FLUKA team Input from: R. Bruce Collimation Working Group #206 27/6/2016 E. Skordis 1

BLM response history Collimation Working Group #206 27/6/2016 E. Skordis 2

TCTH+VA pictures TCT_VA BLM is further away in comparison with the TCT_H BLM Collimation Working Group #206 27/6/2016 E. Skordis 3

Collimation Working Group #206 27/6/2016 E. Skordis 4

Ion Vaccum Pump VPI-30 L Collimation Working Group #206 27/6/2016 E. Skordis 5

Impact at TCTH Collimation Working Group #206 27/6/2016 E. Skordis 6

Impact at TCTV Collimation Working Group #206 27/6/2016 E. Skordis 7

Primary response appears with BOLD BLM Responses Beam 1 Left of IP 1 Horizontal Halo 6. 5 Te. V (Values are normalised BLM to the BLM_TCP. C response for horizontal Simulated losses Collimator at 3. 5 Te. V which corresponds to TCTPH. 4 L 1 4. 58 10 -12 Gy/p ) TCTPV. 4 L 1 2016 40 cm configuration Collimator Settings: Primaries: 5. 5 σ Secondaries in P 7: 6. 5 σ Tertiaries in IP 1: 9 σ TCTPH: 0. 9389 cm TCTPV: 0. 5973 cm (halfgap) BLMTI. B 4 L 1 BLMTI. C 4 L 1 10. 3 1. 24 0. 58 4. 52 Horizontal Impact Parameter: Negative Jaw (closer to BLM): 2. 611 mm Positive Jaw: 1. 234 mm Negative/Positive impacts ~ 5 Vertical Halo 6. 5 Te. V BLM response Simulated Collimator BLMTI. B 4 L 1 BLMTI. C 4 L 1 TCTPH. 4 L 1 9. 36 1. 15 TCTPV. 4 L 1 0. 6 4. 58 Collimation Working Group #206 27/6/2016 E. Skordis 8

Conclusions • Updated geometry model with BLM position and addition of the Vacuum pump • Illustrated the sensitivity of the BLM response on the geometry and BLM location • Simulated the BLM response of TCT BLM response from tertiary halo at 6. 5 Te. V in Point 1 • Results can be used together with the BLM experimental signal in order to calculate the number of protons lost in each collimator properly taking into account the crosstalk effect Thank you! Collimation Working Group #206 27/6/2016 E. Skordis 9

Back up Slide NEW collimator settings/ input OLD collimator settings/ input Horizontal Impact Parameter: Negative Jaw (closer to BLM): 2. 611 mm Positive Jaw: 1. 234 mm TCTPH: 0. 9389 cm (halfgap) Negative/Positive impacts ~ 5 Collimation Working Group #206 27/6/2016 Horizontal Impact Parameter: Negative Jaw (closer to BLM): 0. 755 mm Positive Jaw: 0. 446 mm TCTPH: 1. 12984 cm halfgap Negative/Positive impacts ~ 1 E. Skordis 10