1. TCT BLM response from tertiary halo at 6.5 TeV
E. Skordis
On behalf of the FLUKA team
Input from:
R. Bruce
E. Skordis
Collimation Working Group #206 27/6/2016

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

3. 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

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

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

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

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

8. BLM Responses Beam1 Left of IP1
Primary response appears with BOLD
Horizontal Impact Parameter:
Negative Jaw (closer to BLM): 2.611mm
Positive Jaw:
1.234 mm
Negative/Positive impacts ~ 5
Horizontal Halo 6.5 TeV
BLM response
Simulated
Collimator
BLMTI.B4L1
BLMTI.C4L1
TCTPH.4L1
10.3
1.24
TCTPV.4L1
0.58
4.52
(Values are normalised to the BLM_TCP.C response for horizontal losses
at 3.5 TeV
which corresponds to Gy/p )
cm configuration
Collimator Settings:
Primaries: 5.5 σ
Secondaries in P7: 6.5 σ
Tertiaries in IP1: 9 σ
TCTPH: cm
TCTPV: cm
(halfgap)
Vertical Halo 6.5 TeV
BLM response
Simulated
Collimator
BLMTI.B4L1
BLMTI.C4L1
TCTPH.4L1
9.36
1.15
TCTPV.4L1
0.6
4.58
Collimation Working Group #206 27/6/2016
E. Skordis

9. 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 TeV 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

10. Back up Slide NEW collimator settings/ input
OLD collimator settings/ input
Horizontal Impact Parameter:
Negative Jaw (closer to BLM): 2.611mm
Positive Jaw:
1.234 mm
TCTPH: cm
(halfgap)
Negative/Positive impacts ~ 5
Horizontal Impact Parameter:
Negative Jaw (closer to BLM): 0.755mm
Positive Jaw:
0.446 mm
TCTPH: cm
halfgap
Negative/Positive impacts ~ 1
Collimation Working Group #206 27/6/2016
E. Skordis