Tom Lord DUNE Prism Meeting 9 th January 2020 OA Distance - - PowerPoint PPT Presentation

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Tom Lord DUNE Prism Meeting 9 th January 2020 OA Distance - - PowerPoint PPT Presentation

Feb 11, 2024 41 likes •491 views

Beam Options for DUNE-Prism Tom Lord DUNE Prism Meeting 9 th January 2020 OA Distance Reduction? Can the OA distance required be for reduced with a few extra HC fluxes? Can we remove requirement for middle-distance OA measurements?

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SLIDE 1

Beam Options for DUNE-Prism

Tom Lord DUNE Prism Meeting 9th January 2020

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SLIDE 2

OA Distance Reduction?

1/9/2020

  • Can the OA distance required be for reduced with a few extra

HC fluxes?

  • Can we remove requirement for middle-distance OA

measurements? – say just ~30m + on-axis?

Tom Lord | Beam Options for DUNE-Prism 2

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SLIDE 3

Up to 27.25 – Prism Only

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 3

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SLIDE 4

Up to 25.25 – Prism Only

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 4

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SLIDE 5

Up to 25.25 – BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 5

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SLIDE 6

Up to 23.25 – Prism Only

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 6

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SLIDE 7

Up to 23.25 – BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 7

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SLIDE 8

Up to 23.25 - BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 8

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SLIDE 9

Up to 21.25m OA – BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 9

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SLIDE 10

Up to 20.5m OA – PRISM only

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 10

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SLIDE 11

Up to 20.5m OA - BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 11

Additional Beams

  • ABC:
  • 200kA on-axis,
  • 330kA on-axis,
  • BC:
  • 310kA 16.5-

20.5m OA

  • 330kA 16.5-

20.5m OA

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SLIDE 12

Up to 18.5m OA – PRISM only

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 12

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SLIDE 13

Up to 18.5m OA - BeamPrism

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 13

Additional Beams

  • AC:
  • 250kA on-axis
  • ABC:
  • 200kA on-axis,
  • 200kA 2.5m-

6.5m OA

  • BC:
  • 293kA on-axis
  • 293kA 6.5m-

10.5m OA

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SLIDE 14

No Mid OA positions

1/9/2020

  • Can we remove requirement for middle-distance OA

measurements? – say just ~30m + on-axis?

Tom Lord | Beam Options for DUNE-Prism 14

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SLIDE 15

No Mid 4m 20.25-23.75

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 15

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SLIDE 16

nomid4m 28-32m OA

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 16

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SLIDE 17

nomid4m 28-32m OA

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 17

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SLIDE 18

nomid4m 30.25-33.75

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 18

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SLIDE 19

Nomid 7m 21.25-27.75

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 19

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SLIDE 20

Nomid 7m 23.25-29.75

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 20

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SLIDE 21

Nomid 7m 17.25-23.75

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 21

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SLIDE 22

Shape tests

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 22

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SLIDE 23

KS Test & Degeneracies

1/9/2020

Clearly plenty of degeneracies in the flux space Even more degeneracies in the solutions..

  • Want to directly quantify some aspects of this degeneracy:
  • how the shape & position of these distributions varies

Tom Lord | Beam Options for DUNE-Prism 23

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SLIDE 24

Nominal vs Nominal

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 24

Further off-axis Further off-axis

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SLIDE 25

KS Test & Degeneracies

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 25

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SLIDE 26

Closest Flux Up To Xm OA

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 26

AB A AC ABC BC

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SLIDE 27

Expanding Beam Options

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 27

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SLIDE 28

On-axis HC fluxes

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 28

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SLIDE 29

Lower Momentum Beams

1/9/2020

  • May be possible to run lower momentum proton beam to the

target

  • Main Injector cycles faster for lower momentum beams →

relative flux intensity isn’t as bad

  • Operate same set of horn configurations

Tom Lord | Beam Options for DUNE-Prism 29

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SLIDE 30

Lower Energy Beams – 30 GeV

1/9/2020

  • 30 GeV with 2x

scaling to account for increased MI cycle

Tom Lord | Beam Options for DUNE-Prism 30

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SLIDE 31

Lower Energy Beams – 8 GeV

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 31

  • 8 GeV with 3.75x

scaling to account for increased MI cycle

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SLIDE 32

Lower Energy Beams – 8 GeV – 5x relative scaling

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 32

  • 8 GeV with 20x

scaling

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SLIDE 33

Thank you

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 33

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Backup Slides

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 34

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SLIDE 35

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 35

On-axis HC fluxes

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SLIDE 36

On-axis HC fluxes

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 36

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Initial Approach

1/9/2020

  • Feed in all HC fluxes on & off-axis then reduce down to “best”

coefficients

  • Fit quality depends on number of allowed additional fluxes
  • Also on relative HC regularisation parameter
  • Also on off-axis flux binning
  • Also on how additional number of fluxes are reduced

Tom Lord | Beam Options for DUNE-Prism 37

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SLIDE 38

Fit Method

  • Solve using Tikhonov regularisation
  • We want

satisfying

  • If

is invertible, then

  • Add regularisation with a tuneable penalty matrix,

, where

  • r similar
  • Then minimize
  • The solution to this is

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 38

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SLIDE 39

On-axis HC fluxes Normed wrt 293kA

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 39

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SLIDE 40

Compressed Sensing Solves

Blue: ND at 293kA Orange : 250kA – 200kA (unweighted)

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 40

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Nominal vs A

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 41

Further off-axis Further off-axis

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SLIDE 42

Nominal vs AB

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 42

Further off-axis Further off-axis

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SLIDE 43

Nominal vs AC

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 43

Further off-axis Further off-axis

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SLIDE 44

Nominal vs ABC

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 44

Further off-axis Further off-axis

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SLIDE 45

Nominal vs BC

1/9/2020 Tom Lord | Beam Options for DUNE-Prism 45

Further off-axis Further off-axis