Plasma Wakefield/STFC Summer School 2022 Poster: Difference between revisions

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|9 || short_bunch - DAC || 3 || 20 || 1.0 || 2045.504558 || 1 || +3.6 || 0.1 || 3.63 ||30 || Return to run 3 parameters but set current to positive. Saying q/m is +1 still, but total weight is now positive, suggesting previous runs have been negative species and this is positive.
|9 || short_bunch - DAC || 3 || 20 || 1.0 || 2045.504558 || 1 || +3.6 || 0.1 || 3.63 ||30 || Return to run 3 parameters but set current to positive. Saying q/m is +1 still, but total weight is now positive, suggesting previous runs have been negative species and this is positive.
|-
|-
Driver Density: Long vs Short Proton Bunch


{| class="wikitable"
{| class="wikitable"
!Run Number
!Run Number
!Driver Description
!Base Configuration
!Base Configuration
!Window Width
!Window Width
!Window Length
!Window Length
 
! q/m
 
!Total Weight (pC)
= Driver Density: Long vs Short Proton Bunch =
!LCODE ampl
!LCODE Beam Current
!LCODE Beam Length
!Beam Length (um)
!Energy (approx) (GeV)
!Comments
|-
|1 || Proton, short beam, shallow plasma || short_bunch - DAC || 3 || 10 || 0.00054 || 2045.504558 || 1.0 || 3.6 || 0.1 || 3.64um|| 30 || USE: PROTON-ANTIPROTON SHORT RANGE COMPARISON. Looks like it has a suck in region first. Good providing the next one does not.
|-
|2 || Anti-proton, short beam, shallow plasma || short_bunch - DAC || 3 || 10 || 0.00054 || -2045.504558 || 1.0 || -3.6 || 0.1 || 3.64um || 30 || USE: PROTON-ANTIPROTON SHORT RANGE COMPARISON. Blowout first shown, good.
|-
|3 ||Anti-proton, short beam, deeper plasma || short_bunch - DAC || 3 || 100 || 0.00054 || -2045.504558 || 1.0 || -3.6 || 0.1 || 3.64um|| 30 || USE: PROTON-ANTIPROTON LONG RANGE COMPARISON.
|-
|4 ||Proton, short beam, deeper plasma|| short_bunch - DAC || 3 || 100 || 0.00054 || 2045.504558 || 1.0 || 3.6 || 0.1 || 3.64um|| 30 || USE: PROTON-ANTIPROTON LONG RANGE COMPARISON. PROTON SHORT + LONG BUNCH COMPARISON.
|-
|5 ||Proton, longer beam, deeper plasma || short_bunch - DAC || 3 || 100 || 0.00054 || 2045.504558 || 1.0 || 3.6 || 0.5 || 18.16um || 30 || USE: PROTON SHORT + LONG BUNCH COMPARISON.
|-
|6 ||Anti-proton, longer beam, deeper plasma || short_bunch - DAC || 3 || 100 || 0.00054 || -2045.504558 || 1.0 || -3.6 || 0.5 || 18.16um || 30 || USE: PROTON SHORT + LONG BUNCH COMPARISON.
|-

Latest revision as of 08:37, 13 September 2022

Simulation of short driver bunches. Beams are defined directly within the configuration and beamfiles run through lem.py for diagnostics.

(LCODE configuration takes m/q, but resulting beamfiles are in q/m).


Driver Density: Long vs Short Proton Bunch
Run Number Base Configuration Window Width Window Length q/m Total Weight (pC) LCODE ampl LCODE Beam Current LCODE Beam Length Beam Length (um) Energy (approx) (GeV) Comments
1 short_bunch - DAC 3 10 1.0 -2045.504558 1 -3.6 0.1 3.63 30 Default DAC short_bunch.cfg
2 short_bunch - DAC 3 10 0.00054 -2045.504558 1 -3.6 0.1 3.64 30 Only change made to cfg m/q for protons. Ez plots for 1 and 2 are identical.
3 short_bunch - DAC 3 20 1.0 -2045.504558 1 -3.6 0.1 3.64 30 Plot x-range increases with window length increase.
4 short_bunch - DAC 3 100 1.0 -2045.504558 1 -3.6 0.1 3.63 30 Expecting Ez fall off with distance. Do observe this.
5 short_bunch - DAC 3 100 0.00054 -2045.504558 1 -3.6 0.1 3.64 30 Checking to see if Ez attenuation with distance is different for q/m=1/1836 (proton ). Identical plots.
6 short_bunch - DAC 3 20 0.00054 -2045.504558 -1 -3.6 0.1 3.64 30 Can compare this with run 3 as mass not impacting currently. Identical despite ampl=-1 meaning should be opposite charge. Will set this directly in m/q next.
7 short_bunch - DAC 3 20 1.0 -2045.504558 1 -3.6 0.1 3.63 30 Despite setting m/q=1 in cfg, lem still shows positive and so results identical to run 3.
8 short_bunch - DAC 3 20 1.0 -2045.504558 -1 -3.6 0.1 3.63 30 Keeping m/q as negative and making ampl=-1. Still no change. It seems (from previous knowledge) only changing the sign of the beam current in cfg makes a difference to m/q sign.
9 short_bunch - DAC 3 20 1.0 2045.504558 1 +3.6 0.1 3.63 30 Return to run 3 parameters but set current to positive. Saying q/m is +1 still, but total weight is now positive, suggesting previous runs have been negative species and this is positive.
Run Number Driver Description Base Configuration Window Width Window Length q/m Total Weight (pC) LCODE ampl LCODE Beam Current LCODE Beam Length Beam Length (um) Energy (approx) (GeV) Comments
1 Proton, short beam, shallow plasma short_bunch - DAC 3 10 0.00054 2045.504558 1.0 3.6 0.1 3.64um 30 USE: PROTON-ANTIPROTON SHORT RANGE COMPARISON. Looks like it has a suck in region first. Good providing the next one does not.
2 Anti-proton, short beam, shallow plasma short_bunch - DAC 3 10 0.00054 -2045.504558 1.0 -3.6 0.1 3.64um 30 USE: PROTON-ANTIPROTON SHORT RANGE COMPARISON. Blowout first shown, good.
3 Anti-proton, short beam, deeper plasma short_bunch - DAC 3 100 0.00054 -2045.504558 1.0 -3.6 0.1 3.64um 30 USE: PROTON-ANTIPROTON LONG RANGE COMPARISON.
4 Proton, short beam, deeper plasma short_bunch - DAC 3 100 0.00054 2045.504558 1.0 3.6 0.1 3.64um 30 USE: PROTON-ANTIPROTON LONG RANGE COMPARISON. PROTON SHORT + LONG BUNCH COMPARISON.
5 Proton, longer beam, deeper plasma short_bunch - DAC 3 100 0.00054 2045.504558 1.0 3.6 0.5 18.16um 30 USE: PROTON SHORT + LONG BUNCH COMPARISON.
6 Anti-proton, longer beam, deeper plasma short_bunch - DAC 3 100 0.00054 -2045.504558 1.0 -3.6 0.5 18.16um 30 USE: PROTON SHORT + LONG BUNCH COMPARISON.
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