HL-LHC DA MD3312 FlatOptics MD2148 Joschua Dilly HL-LHC DA - PowerPoint PPT Presentation

HL-LHC DA MD3312 — FlatOptics MD2148 Joschua Dilly HL-LHC DA MD3312 — FlatOptics MD2148 2

Settings Delta Comparison MD2148 to MD3312 Why it’s the Tune Feedback Why it’s not the Separation Bumps Minor Conclusions Beam1 Data K-Modulation Results Between MD2148 to MD3312 MD3312 before and after corrections Beam2 Data Between MD2148 to MD3312 Conclusions Apendix Knob-Values HL-LHC DA MD3312 — FlatOptics MD2148 3

Settings HL-LHC DA MD3312 — FlatOptics MD2148 4

MD2148 MD3312 Beam 1 Beam 2 Beam 1 Beam 2 Q X 0.2806 0.28 0.2805 0.2809 Q Y 0.3093 0.31 0.309 0.309 Q X ACD 0.2686 0.268 0.2685 0.2689 Q Y ACD 0.3243 0.32 0.324 0.324 Optics R2017aT65 A60 15C15 60A10mL300 Beam Process SQUEEZE-6.5TeV-ATS-65cm-60 15cm-2017 V1 ATSFlat@526 [END] Orbit Bumps: 1.0 1.0 2018 flat orbitbump arc45 1.0 1.0 2018 flat q10r4 linked to orbitbump Old Correction: 1.0 1.0 2018 global ats flat b1 1.0 1.0 2018 global ats flat b2 New Correction: 0.0 0.8 2018 global ats flat b1 for ip5 waist HL-LHC DA MD3312 — FlatOptics MD2148 5

Delta Comparison MD2148 to MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 6

Delta Comparison MD2148 to MD3312 In the following subsection all results represent the difference of the measurements between MD3312 and MD2148. Hence, there are additional ’∆’ symbols before the labels to indicate this difference. HL-LHC DA MD3312 — FlatOptics MD2148 7

Subsection 1 Why it’s the Tune Feedback HL-LHC DA MD3312 — FlatOptics MD2148 8

Delta Comparison MD2148 to MD3312 In the following slides, current measurements were used to calculate ∆ K values , which were then in turn inserted into Madx to get their influence on the β -beating. The results are then compared to the measurements. HL-LHC DA MD3312 — FlatOptics MD2148 9

∆K [10 − 5 ] Name 12-June [A] 30-October [A] ∆ [A] kqtd.a12b1 14.61 15.66 1.05 1.08 kqtd.a23b1 -100.58 -94.73 5.85 6.04 kqtd.a34b1 -107.97 -102.11 5.86 6.05 kqtd.a45b1 -23.72 -22.68 1.04 1.07 kqtd.a56b1 32.29 33.34 1.05 1.08 kqtd.a67b1 106.75 112.62 5.87 6.06 kqtd.a78b1 119.84 125.68 5.84 6.03 kqtd.a81b1 -20.86 -19.81 1.05 1.08 kqtf.a12b1 -19.99 -14.76 5.23 5.40 kqtf.a23b1 -28.37 -19.72 8.65 8.93 kqtf.a34b1 -22.52 -13.85 8.67 8.95 kqtf.a45b1 18.29 23.5 5.21 5.38 kqtf.a56b1 -36.03 -30.81 5.22 5.39 kqtf.a67b1 69.76 78.43 8.67 8.95 kqtf.a78b1 58.62 67.29 8.67 8.95 kqtf.a81b1 16.34 21.54 5.2 5.37 Table: Beam1 Current measured during MD2148 and 3312 → big current differences in the ATS arcs due to tune feedback. (Data thanks to Matteo Solfaroli Camillocci) HL-LHC DA MD3312 — FlatOptics MD2148 10

kqtd.a12b1 kqtd.a67b1 kqtf.a23b1 kqtf.a67b1 kqtd.a23b1 kqtd.a78b1 kqtf.a34b1 kqtf.a78b1 kqtd.a34b1 kqtd.a81b1 kqtf.a45b1 kqtf.a81b1 kqtd.a45b1 kqtf.a12b1 kqtf.a56b1 all kqtd.a56b1 0.050 0.025 X 0.000 X / 0.025 0.050 0 5000 10000 15000 20000 25000 0.01 Y Y / 0.00 0.01 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 1 β -beating difference from current. → Strongest influencers clearly ATS-arcs. HL-LHC DA MD3312 — FlatOptics MD2148 11

from I from harmonic analysis 0.10 0.05 X X / 0.00 0.05 0.10 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 0.10 0.05 Y 0.00 Y / 0.05 0.10 0 5000 10000 15000 20000 25000 Figure: Beam 1 β -beating difference from current and harpy. → Differences are well explained by current measurements. HL-LHC DA MD3312 — FlatOptics MD2148 12

∆K [10 − 5 ] Name 12-June [A] 30-October [A] ∆ [A] kqtd.a12b2 -7.55 -6.96 0.59 0.61 kqtd.a23b2 139.05 147.61 8.56 8.84 kqtd.a34b2 142.59 151.15 8.56 8.83 kqtd.a45b2 35.24 35.82 0.58 0.60 kqtd.a56b2 -29.09 -28.51 0.58 0.60 kqtd.a67b2 -70.84 -62.28 8.56 8.83 kqtd.a78b2 -94.61 -86.06 8.55 8.82 kqtd.a81b2 33.2 33.79 0.59 0.61 kqtf.a12b2 8.62 8.8 0.18 0.19 kqtf.a23b2 63.83 81.48 17.65 18.22 kqtf.a34b2 58.78 76.43 17.65 18.22 kqtf.a45b2 -34.11 -33.92 0.19 0.20 kqtf.a56b2 28.91 29.1 0.19 0.20 kqtf.a67b2 -34.73 -17.08 17.65 18.22 kqtf.a78b2 -8.71 8.93 17.64 18.21 kqtf.a81b2 -31.31 -31.12 0.19 0.20 Table: Beam2 Current measured during MD2148 and 3312 → only small current differences in the ATS arcs. (Data thanks to Matteo Solfaroli Camillocci) HL-LHC DA MD3312 — FlatOptics MD2148 13

kqtd.a12b2 kqtd.a67b2 kqtf.a23b2 kqtf.a67b2 kqtd.a23b2 kqtd.a78b2 kqtf.a34b2 kqtf.a78b2 kqtd.a34b2 kqtd.a81b2 kqtf.a45b2 kqtf.a81b2 kqtd.a45b2 kqtf.a12b2 kqtf.a56b2 all kqtd.a56b2 0.005 0.000 X X / 0.005 0.010 0.015 0 5000 10000 15000 20000 25000 0.010 0.005 Y Y / 0.000 0.005 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 2 β -beating difference from current. → The high values in the non-ATS arcs have little influence. HL-LHC DA MD3312 — FlatOptics MD2148 14

from I from harmonic analysis 0.10 0.05 X X / 0.00 0.05 0.10 IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 0.10 0.05 Y 0.00 Y / 0.05 0.10 0 5000 10000 15000 20000 25000 Figure: Beam 2 β -beating difference from current and harpy. → Differences might be due to noisy measurements. HL-LHC DA MD3312 — FlatOptics MD2148 15

Subsection 2 Why it’s not the Separation Bumps HL-LHC DA MD3312 — FlatOptics MD2148 16

Delta Comparison MD2148 to MD3312 In the following slides, as model, the difference between models with and without separation bumps in IP1 and IP5 are used, as this was the only ”manual” settings difference discovered. HL-LHC DA MD3312 — FlatOptics MD2148 17

Model Measurement 0.6 0.4 X [mm] 0.2 0.0 IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 0.6 0.4 Y [mm] 0.2 0.0 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 1 Orbit difference MD3312 and MD2148. → Model and Measurement are in agreement HL-LHC DA MD3312 — FlatOptics MD2148 18

Model Measurement 0.10 0.05 X X / 0.00 0.05 0.10 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 0.10 0.05 Y Y / 0.00 0.05 0.10 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 1 β -beating difference MD3312 and MD2148. → ≈ 5% unexplained β -beating in X-plane measurement. HL-LHC DA MD3312 — FlatOptics MD2148 19

Model Measurement 1 0 X [mm] 1 2 IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 1 0 Y [mm] 1 2 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 2 Orbit difference MD3312 and MD2148. → Model and Measurement are in agreement HL-LHC DA MD3312 — FlatOptics MD2148 20

Model Measurement 0.10 0.05 X X / 0.00 0.05 0.10 IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 0.10 0.05 Y Y / 0.00 0.05 0.10 0 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beam 2 β -beating difference MD3312 and MD2148. → Differences in X-plane not as clear as for Beam1 (maybe unexplained) HL-LHC DA MD3312 — FlatOptics MD2148 21

Subsection 3 Minor Conclusions HL-LHC DA MD3312 — FlatOptics MD2148 22

Conclusions • Current differences between the MDs explain Beam 1 β -beating very well. • Orbit bumps have only minor influence. • Beam 2 β -beating not completely explained. HL-LHC DA MD3312 — FlatOptics MD2148 23

Beam1 Data HL-LHC DA MD3312 — FlatOptics MD2148 24

Subsection 1 K-Modulation Results HL-LHC DA MD3312 — FlatOptics MD2148 25

IP1 IP5 X Y X Y MD2148 β ∗ [m] — * 0.166 0.180 0.596 Final Result Waist [m] — * 0.049 -0.067 0.067 β Waist [m] — * 0.150 0.151 0.588 MD3312 β ∗ [m] — — 0.241 0.699 Before Corr. Waist [m] — — -0.116 0.221 β Waist [m] — — 0.151 0.621 MD3312 β ∗ [m] — — 0.169 0.640 After Corr. Waist [m] — — -0.052 0.040 β Waist [m] — — 0.151 0.637 * bad k-modulation measurement HL-LHC DA MD3312 — FlatOptics MD2148 26

Subsection 2 Between MD2148 to MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 27

mo_MD2148 mo_MD3312 me_MD2148 me_MD3312 4 2 [ mm ] 0 x 2 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 2 1 [ mm ] 0 y 1 2 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Orbit comparison MD2148 and MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 28

MD2148 MD3312 0.2 0.1 x 0.0 x / 0.1 0.2 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 0.15 0.10 0.05 y 0.00 y / 0.05 0.10 0.15 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Beta-Beating comparison MD2148 and MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 29

MD2148 MD3312 0.01 [2 ] 0.00 x 0.01 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 0.015 0.010 0.005 [2 ] 0.000 y 0.005 0.010 0.015 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Phase comparison MD2148 and MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 30

MD2148 MD3312 0.15 0.10 | f 1001 | 0.05 0.00 0.05 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP1 0.10 0.05 | f 1010 | 0.00 0.05 5000 10000 15000 20000 25000 Longitudinal location [m] Figure: Coupling Amp. comparison MD2148 and MD3312 HL-LHC DA MD3312 — FlatOptics MD2148 31

Subsection 3 MD3312 before and after corrections HL-LHC DA MD3312 — FlatOptics MD2148 32