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arxiv: 2604.02136 · v1 · submitted 2026-04-02 · ✦ hep-ex · nucl-ex

Recognition: 1 theorem link

· Lean Theorem

A forward-angle large-acceptance magnetic spectrometer

B. Wojtsekhowski , G. Cates , E. Cisbani , M. Jones , G. Franklin , N. Liyanage , L. Pentchev , A.J.R. Puckett
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R. Wines
Authors on Pith no claims yet

Pith reviewed 2026-05-13 20:48 UTC · model grok-4.3

classification ✦ hep-ex nucl-ex
keywords magnetic spectrometerlarge acceptanceforward scatteringsolid anglemagnetic shieldingdipole magnetbeamlinehigh luminosity
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The pith

A magnetic spectrometer with a horizontal slit through its yoke achieves 70 msr solid angle acceptance at forward angles by placing the target close to the magnet.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper describes the construction of a large solid angle magnetic spectrometer for high-luminosity forward scattering experiments. Its key feature is a horizontal slit opening that lets the beamline pass through the magnet yoke, shortening the target-to-spectrometer distance. This geometry produces a solid angle acceptance of 70 msr. A two-layer shielding system with iron rings plus correcting magnets keep residual fields low enough to preserve beam quality. The design has already supported multiple physics runs and carries an approved future program.

Core claim

The spectrometer uses a horizontal slit opening in the dipole magnet yoke to allow the beamline to pass through it. This permits the target to sit at a short distance from the spectrometer entrance and yields a solid angle acceptance of 70 msr. Residual transverse field inside the slit is reduced by a two-layer magnetic shielding system whose outer layer consists of iron rings. Two correcting magnets compensate the fringe field outside the yoke. Mechanical stability of the tall dipole near the target is provided by a heavy counterweight.

What carries the argument

The horizontal slit opening through the dipole magnet yoke, which permits close target placement while the two-layer shielding and correcting magnets maintain beam quality.

Load-bearing premise

The shielding rings and correcting magnets must reduce the residual transverse field on the beamline to levels that produce no measurable deflection or degradation of beam quality.

What would settle it

A beam-position or beam-quality measurement taken with the spectrometer magnet at full field that shows transverse deflection or emittance growth exceeding the experiment's tolerance.

Figures

Figures reproduced from arXiv: 2604.02136 by A.J.R. Puckett, B. Wojtsekhowski, E. Cisbani, G. Cates, G. Franklin, L. Pentchev, M. Jones, N. Liyanage, R. Wines.

Figure 1
Figure 1. Figure 1: The views of the SBS magnet. A 3D view on the left and front view on the right (a [PITH_FULL_IMAGE:figures/full_fig_p005_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: The SBS magnet with removed upper portion for visibility of the beamline. Outer [PITH_FULL_IMAGE:figures/full_fig_p006_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: The side view of the beamline magnetic shield. In the middle picture, the iron of [PITH_FULL_IMAGE:figures/full_fig_p007_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: The top panel shows the transverse (green line) and longitudinal (red line) field [PITH_FULL_IMAGE:figures/full_fig_p008_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Here the z axis is along the beam line; the x and y axes are in the horizontal and vertical directions, respectively [PITH_FULL_IMAGE:figures/full_fig_p009_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: The view of the vector field in the beamline shield near the exit from the SBS dipole [PITH_FULL_IMAGE:figures/full_fig_p010_6.png] view at source ↗
Figure 7
Figure 7. Figure 7: The view of the yoke/dipole gap with the pole shims (shown in pink) used in the [PITH_FULL_IMAGE:figures/full_fig_p011_7.png] view at source ↗
Figure 8
Figure 8. Figure 8: Usable luminosity vs. solid angle of the JLab spectrometers. The green dashed line [PITH_FULL_IMAGE:figures/full_fig_p012_8.png] view at source ↗
Figure 9
Figure 9. Figure 9: The SBS spectrometer as used in the GEp experiment. [PITH_FULL_IMAGE:figures/full_fig_p014_9.png] view at source ↗
read the original abstract

A large solid angle magnetic spectrometer for high luminosity and forward scattering angles was constructed at the Thomas Jefferson National Accelerator Facility. A number of physics experiments have used this spectrometer, and a significant physics program of future experiments has already been approved. A key feature of the spectrometer concept is a horizontal slit opening that allows the beamline to pass through the yoke of the spectrometer magnet. This design enables a short distance between the target and spectrometer, resulting in a 70~msr solid angle acceptance. The residual magnetic-field on the beamline inside the slit is reduced by a two-layer magnetic shielding system, with the external layer comprising a set of iron rings. Two correcting magnets, before and after the dipole, were used to compensate for the transverse component of the fringe field outside of the dipole yoke. The mechanical stability of the tall dipole magnet in close proximity to the target was provided by means of a heavy counterweight.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The manuscript describes the design and construction of a large solid-angle magnetic spectrometer at Jefferson Lab for forward-angle, high-luminosity experiments. The central feature is a horizontal slit through the dipole yoke that permits the primary beamline to pass close to the target, yielding a claimed 70 msr acceptance. Residual transverse field on the beamline is addressed by a two-layer shielding system (iron rings plus internal shielding) together with two correcting magnets; mechanical stability is provided by a heavy counterweight. The spectrometer has already been used in multiple approved experiments.

Significance. If the shielding and field-cancellation approach performs as described, the instrument supplies a distinctive capability for forward-angle measurements at high luminosity that has already supported a substantial JLab physics program. The technical description of the beam-through-yoke geometry and the layered shielding solution constitutes a useful reference for future spectrometer designs.

major comments (2)
  1. [Abstract] Abstract: the 70 msr solid-angle acceptance is stated as a direct consequence of the horizontal slit and short target-to-spectrometer distance, yet no acceptance calculations, Monte Carlo ray-tracing results, or measured acceptance data are supplied to substantiate the numerical value.
  2. [Abstract] Abstract / shielding description: the two-layer magnetic shielding (external iron rings) plus correcting magnets are asserted to keep the residual transverse field low enough that beam deflection and emittance growth remain acceptable, but the text contains neither Hall-probe field maps, integrated field integrals, nor beam-transport simulations demonstrating that the residual field lies below the ~10^{-4} T·m tolerance typical for JLab beam specifications.
minor comments (2)
  1. The manuscript would be strengthened by explicit references to published results or technical notes from the experiments that have already used the spectrometer, allowing readers to assess real-world performance.
  2. Provide a brief table or figure caption that lists the key dimensions, materials, and current settings of the correcting magnets and iron rings for reproducibility.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful and constructive review of our manuscript on the forward-angle large-acceptance magnetic spectrometer. The comments highlight important areas where additional quantitative support will strengthen the paper. We address each point below and will revise the manuscript accordingly.

read point-by-point responses

  1. Referee: [Abstract] Abstract: the 70 msr solid-angle acceptance is stated as a direct consequence of the horizontal slit and short target-to-spectrometer distance, yet no acceptance calculations, Monte Carlo ray-tracing results, or measured acceptance data are supplied to substantiate the numerical value.

    Authors: We agree that explicit documentation of the acceptance is needed. In the revised manuscript we will add a dedicated subsection (or appendix) presenting Monte Carlo ray-tracing results obtained with the GEANT4-based simulation package used during the design phase. These results will show the solid-angle acceptance as a function of scattering angle and momentum transfer, confirming the 70 msr value for the nominal kinematics. We will also include a brief comparison with acceptance values extracted from the data of the first approved experiments that have already run with the spectrometer. revision: yes

  2. Referee: [Abstract] Abstract / shielding description: the two-layer magnetic shielding (external iron rings) plus correcting magnets are asserted to keep the residual transverse field low enough that beam deflection and emittance growth remain acceptable, but the text contains neither Hall-probe field maps, integrated field integrals, nor beam-transport simulations demonstrating that the residual field lies below the ~10^{-4} T·m tolerance typical for JLab beam specifications.

    Authors: We acknowledge that quantitative validation of the shielding performance is essential. The revised version will include (i) Hall-probe maps of the residual transverse field measured along the beamline inside the slit both with and without the iron-ring shielding, (ii) the corresponding integrated field integrals, and (iii) beam-transport simulations performed with the TRANSPORT code that demonstrate the residual deflection and emittance growth remain within JLab specifications. These data were collected during the commissioning phase and will be presented with appropriate figures. revision: yes

Circularity Check

0 steps flagged

No circularity: purely descriptive hardware paper with no derivations or fitted quantities

full rationale

The manuscript is a descriptive account of spectrometer construction and geometry. It states that the horizontal slit enables short target-to-spectrometer distance 'resulting in a 70 msr solid angle acceptance' and describes the two-layer shielding plus correcting magnets, but supplies no equations, parameter fits, predictions, or self-citations that reduce any claim to its own inputs by construction. The acceptance figure is presented as a direct geometric consequence rather than a derived or fitted result. No load-bearing steps exist that match any of the enumerated circularity patterns.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

This is an engineering description of an instrument build. No free parameters, scientific axioms, or new postulated entities are introduced.

pith-pipeline@v0.9.0 · 5486 in / 1113 out tokens · 42103 ms · 2026-05-13T20:48:33.516795+00:00 · methodology

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Lean theorems connected to this paper

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    Relation between the paper passage and the cited Recognition theorem.

    A key feature of the spectrometer concept is a horizontal slit opening that allows the beamline to pass through the yoke of the spectrometer magnet... two-layer magnetic shielding system, with the external layer comprising a set of iron rings.

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Reference graph

Works this paper leans on

44 extracted references · 44 canonical work pages

  1. [1]

    E. E. Chambers, R. Hofstadter, Structure of the proton, Phys. Rev. 103 (1956) 1454–1463.doi:10.1103/PhysRev.103.1454

    work page doi:10.1103/physrev.103.1454 1956

  2. [2]

    Taylor, Nucleon Form Factors above 6 GeV (1967)

    R. Taylor, Nucleon Form Factors above 6 GeV (1967). URLhttps://www.slac.stanford.edu/pubs/slacpubs/ 0250/slac-pub-0372.pdf 16

    work page 1967

  3. [3]

    Bartel, et al., A magnetic spectrometer for high energy elec- tron scattering experiments, Nucl

    W. Bartel, et al., A magnetic spectrometer for high energy elec- tron scattering experiments, Nucl. Instrum. Meth. 53 (1967) 293–298.doi:https://doi.org/10.1016/0029-554X(67) 91368-7

    work page doi:10.1016/0029-554x(67 1967

  4. [4]

    Enge, Broad-range particle spectrographs, Nucl

    H. Enge, Broad-range particle spectrographs, Nucl. Instrum. Meth. A 187 (1) (1981) 1–11.doi:https://doi.org/10.1016/ 0029-554X(81)90465-1

    work page 1981

  5. [5]

    Bertozzi, M

    W. Bertozzi, M. Hynes, C. Sargent, W. Turchinetz, C. Williamson, High resolution spectrometers for electron scat- tering, Nucl. Instrum. Meth. A 162 (1) (1979) 211–238.doi: https://doi.org/10.1016/0029-554X(79)90714-6

    work page doi:10.1016/0029-554x(79)90714-6 1979

  6. [6]

    de Vries, et al., The 500 MeV electron-scattering facility at NIKHEF-K, Nucl

    C. de Vries, et al., The 500 MeV electron-scattering facility at NIKHEF-K, Nucl. Instrum. Meth. A 223 (1) (1984) 1–25. doi:https://doi.org/10.1016/0167-5087(84)90242-4

    work page doi:10.1016/0167-5087(84)90242-4 1984

  7. [7]

    Alcorn, et al., Basic instrumentation for Hall A at Jefferson Lab, Nucl

    J. Alcorn, et al., Basic instrumentation for Hall A at Jefferson Lab, Nucl. Instrum. Meth. A 522 (3) (2004) 294–346.doi: https://doi.org/10.1016/j.nima.2003.11.415

    work page doi:10.1016/j.nima.2003.11.415 2004

  8. [8]

    Ali, et al., The SHMS 11 GeV/c spectrometer in Hall C at Jefferson Lab, Nucl

    S. Ali, et al., The SHMS 11 GeV/c spectrometer in Hall C at Jefferson Lab, Nucl. Instrum. Meth. A 1083 (2026) 171070. doi:https://doi.org/10.1016/j.nima.2025.171070

    work page doi:10.1016/j.nima.2025.171070 2026

  9. [9]

    Blomqvist, et al., The three-spectrometer facility at the mainz microtron mami, Nucl

    K. Blomqvist, et al., The three-spectrometer facility at the mainz microtron mami, Nucl. Instrum. Meth. A 403 (2) (1998) 263–301.doi:https://doi.org/10.1016/S0168-9002(97) 01133-9

    work page doi:10.1016/s0168-9002(97 1998

  10. [10]

    Brindza, et al., Superconducting septum magnet design for Jefferson Lab Hall A, IEEE Transactions on Applied Supercon- ductivity 11 (1) (2001) 1594–1596.doi:10.1109/77.920083

    P. Brindza, et al., Superconducting septum magnet design for Jefferson Lab Hall A, IEEE Transactions on Applied Supercon- ductivity 11 (1) (2001) 1594–1596.doi:10.1109/77.920083

    work page doi:10.1109/77.920083 2001

  11. [11]

    Petratos, et al., Large Acceptance Magnetic Spectrometers for Polarized Deep Inelastic Electron Scattering (1991)

    M. Petratos, et al., Large Acceptance Magnetic Spectrometers for Polarized Deep Inelastic Electron Scattering (1991). URLhttps://www.slac.stanford.edu/pubs/slacpubs/ 5500/slac-pub-5678.pdf

    work page 1991

  12. [12]

    Renkhoff, et al., Measurement of the magnetic formfactor of the deuteron forQ2 = 0.5to1.3 (GeV /c) 2 by a coincidence experiment, Z.Phys.C-ParticlesandFields29(1985)513–518

    R. Renkhoff, et al., Measurement of the magnetic formfactor of the deuteron forQ2 = 0.5to1.3 (GeV /c) 2 by a coincidence experiment, Z.Phys.C-ParticlesandFields29(1985)513–518. doi:https://doi.org/10.1007/BF01560283. 17

    work page doi:10.1007/bf01560283 1985

  13. [13]

    Gross, CEBAF: A microscope for nuclei, Nucl

    F. Gross, CEBAF: A microscope for nuclei, Nucl. Instrum. Meth. B 24-25 (1987) 432–436.doi:https://doi.org/10. 1016/0168-583X(87)90677-X

    work page 1987

  14. [14]

    de Lange, et al., A large acceptance spectrometer for the internal target facility at nikhef, Nucl

    D. de Lange, et al., A large acceptance spectrometer for the internal target facility at nikhef, Nucl. Instrum. Meth. A 406 (2) (1998) 182–194.doi:https://doi.org/10.1016/ S0168-9002(98)91981-7

    work page 1998

  15. [15]

    M. Barabanov, et al., Diquark correlations in hadron physics: Origin, impact and evidence, Progress in Particle and Nuclear Physics 116 (2021) 103835.doi:https://doi.org/10.1016/ j.ppnp.2020.103835

    work page arXiv 2021

  16. [16]

    Achenbach, et al., The present and future of QCD, Nu- clear Physics A 1047 (2024) 122874.doi:https://doi.org/ 10.1016/j.nuclphysa.2024.122874

    P. Achenbach, et al., The present and future of QCD, Nu- clear Physics A 1047 (2024) 122874.doi:https://doi.org/ 10.1016/j.nuclphysa.2024.122874

    work page doi:10.1016/j.nuclphysa.2024.122874 2024

  17. [17]

    Cisbani, M

    E. Cisbani, M. Khandaker, L. P. Pentchev, C. F. Perdrisat, V. Punjabi, B. Wojtsekhowski, et al., Large Acceptance Proton Form Factor Ratio Method at 13 and 15 (GeV/c)2 Using Recoil Polarization Method (2007). URLhttps://www.jlab.org/exp_prog/proposals/07/ PR12-07-109.pdf

    work page 2007

  18. [18]

    Cisbani, M

    E. Cisbani, M. Jones, N. Liyanage, L. P. Pentchev, A. Puckett, B. Wojtsekhowski, et al., Large Acceptance Proton Form Factor Ratio Method up tp 14.5 (GeV/c) 2 Using Recoil- Polarization Method (2017). URLhttps://www.jlab.org/exp_prog/proposals/19/ E12-07-109%20Update.pdf

    work page 2017

  19. [19]

    A. I. Akhiezer, L. N. Rozentsveig, I. M. Shumushkevich, Scat- tering of electrons by protons, Soviet Physics JETP 3 (1958) 588, Zhurnal Eksperimental’noi i Teoretischeskoi Fiziki, 33, 765 (1957). URLhttp://jetp.ras.ru/cgi-bin/dn/e_006_03_0588.pdf

    work page 1958

  20. [20]

    J. H. Scofield, Scattering of Polarized Electrons by Polarized Nucleons, Phys. Rev. 113 (1959) 1599–1600.doi:10.1103/ PhysRev.113.1599. 18

    work page 1959

  21. [21]

    A. I. Akhiezer, M. Rekalo, Polarization phenomena in electron scattering by protons in the high energy region, Sov. Phys. Dokl. 13 (1968) 572, [Dokl. Akad. Nauk Ser. Fiz. 180, 1081 (1968)]. URLhttps://api.semanticscholar.org/CorpusID: 115292478

    work page 1968

  22. [22]

    R. G. Arnold, C. E. Carlson, F. Gross, Polarization Transfer in Elastic electron Scattering from Nucleons and Deuterons, Phys. Rev. C23 (1981) 363.doi:10.1103/PhysRevC.23.363

    work page doi:10.1103/physrevc.23.363 1981

  23. [23]

    S. Basiliev, et al., Measurement of neutron and proton analyz- ing powers on C, CH, CH2 and Cu targets in the momentum re- gion 3–4.2 GeV/c, The European Physical Journal A 56 (2020) 26.doi:10.1140/epja/s10050-020-00032-z

    work page doi:10.1140/epja/s10050-020-00032-z 2020

  24. [24]

    Cacciari, G

    L. Azhgirey, et al., Measurement of analyzing powers for the reaction p+CH2 at p+p=1.75-5.3GeV/c, Nucl. Instrum. Meth. A 538 (1) (2005) 431–441.doi:https://doi.org/10.1016/j. nima.2004.08.111

    work page doi:10.1016/j 2005

  25. [25]

    Gilman, B

    R. Gilman, B. Quinn, B. Wojtsekhowski, et al., Precision Measurement of the Neutron Magnetic Form Factor Up toQ2 = 18.0 (GeV/c)2 by the Ratio Method (2009). URLhttps://hallaweb.jlab.org/collab/PAC/PAC34/ PR-09-019-gmn.pdf

    work page 2009

  26. [26]

    Cates, S

    G. Cates, S. Riordan, B. Wojtsekhowski, et al., Measurement of the Neutron Electromagnetic Form Factor RatioGn E/Gn M G at HighQ 2 (2009). URLhttps://hallaweb.jlab.org/collab/PAC/PAC34/ PR-09-016-gen.pdf

    work page 2009

  27. [27]

    Keppel, B

    C. Keppel, B. Wojtsekhowski, P. King, D. Dutta, J. Annand, J. Zhang, et al., Measurement of Tagged Deep Inelastic Scattering (TDIS) (2015). URLhttps://www.jlab.org/exp_prog/proposals/15/ PR12-15-006.pdf

    work page 2015

  28. [28]

    Alsalmi, E

    S. Alsalmi, E. Fuchey, B. Wojtsekhowski, et al., Measurement of the Two-Photon Exchange Contribution to the Electron- Neutron Elastic Scattering Cross Section (2020). 19 URLhttps://www.jlab.org/exp_prog/proposals/20/ PR12-20-010_Proposal.pdf

    work page 2020

  29. [29]

    Annand, V

    J. Annand, V. Bellini, M. Kohl, B. Sawatzky, B. Wojt- sekhowski, et al., Measurement of the Ratio GEn/GMn by the Double-polarized 2H(⃗ e,e’⃗ n) Reaction (2017). URLhttps://www.jlab.org/exp_prog/proposals/17/ PR12-17-004.pdf

    work page 2017

  30. [30]

    Niculescu, B

    G. Niculescu, B. Wojtsekhowski, D. Day, D. Keller, J. Zhang, D. Hamilton, et al., Polarization Observables in Wide-Angle Compton Scattering at large s, t, and u (2017). URLhttps://www.jlab.org/exp_prog/proposals/17/ PR12-17-008.pdf

    work page 2017

  31. [31]

    Montgomery, G

    R. Montgomery, G. Cates, A. Tadepalli, B. Wojtsekhowski, et al., Double Spin Asymmetry in Wide-Angle Charged Pion Photoproduction (2021). URLhttps://www.jlab.org/exp_prog/proposals/21/ PR12-21-005.pdf

    work page 2021

  32. [32]

    Puckett, A

    A. Puckett, A. Schmidt, J. Bernauer, et al., High-precision measurement ofµ pGp E/Gp M atQ 2 = 3.7 GeV2 via Polarization Transfer (2024). URLhttps://www.jlab.org/sites/default/files/PAC/ PAC52/PAC52%20REPORT%202024.pdf

    work page 2024

  33. [33]

    Cates, E

    G. Cates, E. Cisbani, G. Franklin, B. Wojtsekhowski, et al., Measurement of the Semi-Inclusiveπand K electro-production in DIS regime from transversely polarized3He target with the SBS&BB spectrometers in Hall A (2009). URLhttps://www.jlab.org/exp_prog/proposals/09/ PR12-09-018.pdf

    work page 2009

  34. [34]

    B. B. Wojtsekhowski, Nucleon form factors program with SBS at JLAB, Int. J. Mod. Phys. Conf. Ser. 35 (12 2014).doi: 10.1142/S201019451460427X

    work page doi:10.1142/s201019451460427x 2014

  35. [35]

    H. Blok, E. Offermann, C. de Jager, H. de Vries, Path re- construction and resolution improvement in magnetic spec- trometers, Nucl. Instrum. Meth. A 262 (2) (1987) 291–297. doi:https://doi.org/10.1016/0168-9002(87)90866-7. 20

    work page doi:10.1016/0168-9002(87)90866-7 1987

  36. [36]

    Sauli, The gas electron multiplier (GEM): Operating princi- ples and applications, Nucl

    F. Sauli, The gas electron multiplier (GEM): Operating princi- ples and applications, Nucl. Instrum. and Meth. A 805 (2016) 2–24.doi:https://doi.org/10.1016/j.nima.2015.07.060

    work page doi:10.1016/j.nima.2015.07.060 2016

  37. [37]

    Gnanvo, et al., Large Size GEM for Super Bigbite Spectrom- eter (SBS) Polarimeter for Hall A 12 GeV program at JLab, Nucl

    K. Gnanvo, et al., Large Size GEM for Super Bigbite Spectrom- eter (SBS) Polarimeter for Hall A 12 GeV program at JLab, Nucl. Instrum. Meth. A 782 (2015) 77–86.arXiv:1409.5393, doi:10.1016/j.nima.2015.02.017

    work page doi:10.1016/j.nima.2015.02.017 2015

  38. [38]

    Franklin, HCAL-J Status, report at SBS collaboration meeting (2014)

    G. Franklin, HCAL-J Status, report at SBS collaboration meeting (2014). URLhttps://slidetodoc.com/ hcalj-status-sbs-collaboration-meeting-july-2014-g/

    work page 2014

  39. [39]

    Lambertson, Charged particle extracting magnet for an ac- celerator, US patent 3323088 A (1965)

    G. Lambertson, Charged particle extracting magnet for an ac- celerator, US patent 3323088 A (1965). URLhttps://patents.google.com/patent/US3323088

    work page 1965

  40. [40]

    URLhttps://www.3ds.com/products/simulia/opera

    Opera, Opera - 3D EM modeling, field simulation and analysis tool (2025). URLhttps://www.3ds.com/products/simulia/opera

    work page 2025

  41. [41]

    URLhttps://www.buckleysystems.com

    Buckley, Bucley Systems Limited (2026). URLhttps://www.buckleysystems.com

    work page 2026

  42. [42]

    Akopov, et al., The HERMES dual-radiator ring imaging Cherenkov detector, Nucl

    N. Akopov, et al., The HERMES dual-radiator ring imaging Cherenkov detector, Nucl. Instrum. Meth. A 479 (2) (2002) 511–530.doi:https://doi.org/10.1016/S0168-9002(01) 00932-9. URLhttps://www.sciencedirect.com/science/article/ pii/S0168900201009329

    work page doi:10.1016/s0168-9002(01 2002

  43. [43]

    Avakian, et al., Performance of F101 radiation re- sistant lead glass shower counters, Nucl

    H. Avakian, et al., Performance of F101 radiation re- sistant lead glass shower counters, Nucl. Instrum. and Meth. A 378 (1) (1996) 155–161.doi:https: //doi.org/10.1016/0168-9002(96)00443-3. URLhttps://www.sciencedirect.com/science/article/ pii/0168900296004433

    work page doi:10.1016/0168-9002(96)00443-3 1996

  44. [44]

    Wojtsekhowski, et al., Adiabatic light guide with s-shaped strips, Review of Scientific Instruments 95 (10 2024).doi: 10.1063/5.0218512

    B. Wojtsekhowski, et al., Adiabatic light guide with s-shaped strips, Review of Scientific Instruments 95 (10 2024).doi: 10.1063/5.0218512. 21

    work page doi:10.1063/5.0218512 2024