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Impact of Detector Solenoid on the CLIC Luminosity Performance
Accelerator Physics · Submitted 5 Dec 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The unrecoverable luminosity loss due to ISR has been evaluated, and found to be in the range 4-5 % for the solenoid design under study.
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The abstract, sentence by sentence
In order to obtain the necessary luminosity with a reasonable amount of beam power, the Compact Linear Collider (CLIC) design includes an unprecedented collision beam size of {\sigma} = 1 nm vertically and {\sigma} = 45 nm horizontally. Given the small and very flat beams, the luminosity can be significantly degraded from the impact of the experimental solenoid field in combination with a large crossing angle. Main effects include y-x'-coupling and increase of vertical dispersion. Additionally, Incoherent Synchrotron Radiation (ISR) from the orbit deflection created by the solenoid field, increases the beam emittance. A detailed study of the impact from a realistic solenoid field and the associated correction techniques for the CLIC Final Focus is presented. In particular, the impact of techniques to compensate the beam optics distortions due to the detector solenoid main field and its overlap with the final focus magnets are shown. The unrecoverable luminosity loss due to ISR has been evaluated, and found to be in the range 4-5 % for the solenoid design under study.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In order to obtain the necessary luminosity with a reasonable amount of beam power, the Compact Linear Collider (CLIC) design includes an unprecedented collision beam size of {\sigma} = 1 nm vertically and {\sigma} = 45 nm horizontally. | background 1.00 | 0.11 | 0.03 | asserted 1.00 |
| s1 | Given the small and very flat beams, the luminosity can be significantly degraded from the impact of the experimental solenoid field in combination with a large crossing angle. | background 0.99 | 0.16 | 0.20 | hedged possibility 0.84 |
| s2 | Main effects include y-x'-coupling and increase of vertical dispersion. | result 0.50 | 0.26 | 0.09 | asserted 1.00 |
| s3 | Additionally, Incoherent Synchrotron Radiation (ISR) from the orbit deflection created by the solenoid field, increases the beam emittance. | background 0.77 | 0.39 | 0.07 | asserted 1.00 |
| s4 | A detailed study of the impact from a realistic solenoid field and the associated correction techniques for the CLIC Final Focus is presented. | contribution 1.00 | 0.87 | 0.07 | asserted 0.97 |
| s5 | In particular, the impact of techniques to compensate the beam optics distortions due to the detector solenoid main field and its overlap with the final focus magnets are shown. | contribution 0.96 | 0.86 | 0.10 | asserted 1.00 |
| s6 | The unrecoverable luminosity loss due to ISR has been evaluated, and found to be in the range 4-5 % for the solenoid design under study. | result 1.00 | 0.93 | 0.50 | asserted 1.00 |
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Original abstract
In order to obtain the necessary luminosity with a reasonable amount of beam power, the Compact Linear Collider (CLIC) design includes an unprecedented collision beam size of {\sigma} = 1 nm vertically and {\sigma} = 45 nm horizontally. Given the small and very flat beams, the luminosity can be significantly degraded from the impact of the experimental solenoid field in combination with a large crossing angle. Main effects include y-x'-coupling and increase of vertical dispersion. Additionally, Incoherent Synchrotron Radiation (ISR) from the orbit deflection created by the solenoid field, increases the beam emittance. A detailed study of the impact from a realistic solenoid field and the associated correction techniques for the CLIC Final Focus is presented. In particular, the impact of techniques to compensate the beam optics distortions due to the detector solenoid main field and its overlap with the final focus magnets are shown. The unrecoverable luminosity loss due to ISR has been evaluated, and found to be in the range 4-5 % for the solenoid design under study.
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Cites as background 1 paper
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In the conceptual design report it is foreseen that one detector will follow the SiD design [ref] , while the second detector will have an ILD design [ref] .
SiD Letter of Intent · Experimental Solenoid Field · 0.92
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