MD3312: HL-LHC DA Studies Status Joschua Dilly O MC 30.10.2019 - - PowerPoint PPT Presentation

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MD3312: HL-LHC DA Studies Status Joschua Dilly O MC 30.10.2019 - - PowerPoint PPT Presentation

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MD3312: HL-LHC DA Studies Status Joschua Dilly O MC 30.10.2019 MD3312 1 General MD Outline Amplitude Detuning Analysis Vertical Kicks Outlook O MC 30.10.2019 MD3312 2 General MD Outline O MC 30.10.2019 MD3312 3 General MD Parameters

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MD3312: HL-LHC DA Studies Status

Joschua Dilly

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General MD Outline Amplitude Detuning Analysis Vertical Kicks Outlook

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General MD Outline

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General MD Parameters

Table: Key MD parameters.

Objective: Replication of HL-LHC Dynamic Aperture and Amplitude Detuning. MD #: 3312 Operators: Markus Albert, Matteo Solfaroli Camillocci Fill #: 7391 Beam Process: MD → SQUEEZE-6.5TeV-ATS-65cm-60 15cm-2017 V1 ATSFlat@526 [END] Date: 30 . 10 . 2018 Start Time: 12 : 00 End Time: 17 : 30 Optics: R2017aT65 A60 15C15 60A10mL300 Crossing: No crossing Separation: [ 0.3 / 1.4 / 0.3 / -1 ] mm in [ IP1 / IP2 / IP5 / IP8 ] , Plane: [ V / V / H / H ] Offset: No offset

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Outline

  • Setup: End-of-Squeeze, flat-optics, 6.5TeV
  • Coupling Correction
  • Waist-Shift tests with K-Modulation
  • Trimming RCTX to replicate HL-LHC b6 errors
  • Beam 1: Amplitude Detuning , Beam 2: Dynamic Aperture
  • Trimming RCOX, RCSSX, RCSX and RCSOX to replicate HL-LHC

b4, a3, b3, a4 errors

  • Beam 1: Amplitude Detuning, Beam 2: Dynamic Aperture

⇒ Dump because of Beam 2

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Preliminary Results (in MD Note)

  • Influence of Tune Feedback on ATS-optics
  • Summary of Waist-Correction
  • Lifetime Analysis during Trims of errors
  • Some Lifetime Analysis during AD-Kicks
  • Some Lifetime Analysis during DA-Kicks

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Amplitude Detuning Analysis

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Working Points

0.26 0.28 0.30 0.32 0.34 Qx 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 Qy

(0.283, 0.31) Natural (0.271, 0.325) AC Dipole (1) (0.275, 0.3) AC Dipole (2) (-4, 1)

Resonance Lines:

  • 2. order
  • 3. order
  • 4. order
  • 5. order
  • 6. order
  • 7. order
  • One WP close to 6th order resonance line (-4 , 1)
  • One WP far away from resonance lines

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SLIDE 9

Subsection 1 Vertical Kicks

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Vertial Kicks - Spectrum

0.0 0.1 0.2 0.3 0.4 0.5

Frequency [tune units]

10

9

10

7

10

5

10

3

10

1

Amplitude in X [a.u]

(1, 0) (0, 1) (1, 1) (2, 0) (0, 2) (-4, 1) N(1, 0) N(0, 1) N(1, 1) N(2, 0) N(0, 2) BPM.31R4.B1 0.0 0.1 0.2 0.3 0.4 0.5

Frequency [tune units]

10

9

10

7

10

5

10

3

10

1

Amplitude in Y [a.u]

(1, 0) (0, 1) (1, 1) (2, 0) (0, 2) (-4, 1) N(1, 0) N(0, 1) N(1, 1) N(2, 0) N(0, 2) BPM.31R4.B1

  • Problem: Only in 5 out of 14 kicks tune visible
  • Tried with SVD Cuts down to 4, Old/New Harpy, SUSSIX
  • Also: Resonance Line not Visible

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Vertial Kicks - Spectrum

0.0 0.1 0.2 0.3 0.4 0.5

Frequency [tune units]

10

9

10

7

10

5

10

3

10

1

Amplitude in X [a.u]

(1, 0) (0, 1) (1, 1) (2, 0) (0, 2) (-4, 1) N(1, 0) N(0, 1) N(1, 1) N(2, 0) N(0, 2) BPM.31R4.B1 0.0 0.1 0.2 0.3 0.4 0.5

Frequency [tune units]

10

9

10

7

10

5

10

3

10

1

Amplitude in Y [a.u]

(1, 0) (0, 1) (1, 1) (2, 0) (0, 2) (-4, 1) N(1, 0) N(0, 1) N(1, 1) N(2, 0) N(0, 2) BPM.31R4.B1

  • Problem: Only in 5 out of 14 kicks tune visible
  • Tried with SVD Cuts down to 4, Old/New Harpy, SUSSIX
  • Also: Resonance Line not Visible

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Vertical Kicks - Amplitude Detuning

0.000 0.001 0.002 0.003 0.004 2Jy [ m] 2 4 Qy [10

3]

(700 ± 500) 103 m

1

B1 Vkicks

⇒ Very high but maybe wrong Amplitude Detuning analysis

  • To be checked: Maybe error in code with units as new Harpy

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Vertical Kicks - Intensity Losses

14:10:00 14:15:00 14:20:00 Time 88 90 92 94 96 98 100 Beam Intensity [%]

  • 0.1±0.1 % -0.1±0.0 % -0.2±0.1 % -0.3±0.1 % -0.3±0.1 %
  • 0.4±0.1 %
  • 0.6±0.0 %
  • 0.8±0.0 %
  • 1.3±0.1 %
  • 2.0±0.1 %
  • 2.5±0.1 %
  • 1.2±0.0 %
  • 0.6±0.1 %
  • 0.4±0.0 %

Date: 2018-10-30 Intensity Kicks Losses

  • Losses at kicks clearly visible

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Vertical Kicks - Forced DA

0.0 0.5 1.0 1.5 2.0 2.5 3.0 N = 2JY/ nominal 0.0 0.5 1.0 1.5 2.0 2.5 Beam Losses [%] Fit: DA= 3.357 ± 0.011N Kicks

⇒ Forced DA evaluation possible from DAJ = Jforced − ǫ ln ∆I I0

  • (1)

⇒ Very small?

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Outlook

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To do

  • Check old AD analysis with new code (to exclude errors)
  • Check MD3312 data again with SUSSIX
  • Analyse Horizontal Kicks with b6
  • Analyse RDTs during DA kicks
  • What else to do with Beam 2 Dynamic Aperture Kicks?
  • Forced DA for 2D kicks ??
  • Analyse Vertical Kicks after full HL-errors

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