1 / 19

Target Shaft Simulation with G4Beamline

Target Shaft Simulation with G4Beamline. M. Apollonio, IC. Motivations:. Assess better orientation for secondaries production Assess flaws in capture dependent on target position work in progress ... a bit of work to generate the secondaries and select only those potentially reaching Q1 bore.

alka
Download Presentation

Target Shaft Simulation with G4Beamline

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Target Shaft Simulationwith G4Beamline M. Apollonio, IC

  2. Motivations: • Assess better orientation for secondaries production • Assess flaws in capture dependent on target position • work in progress ... • a bit of work to generate the secondaries and select only those potentially reaching Q1 bore

  3. Q1-TGT axis Z X 25 deg 10 mm 10 mm B A A 25 deg rotation & propagation to plane B LONG SLIM secondaries production 20<theta<30 propagation to plane A acos(Pz/Ptot)>20 && acos(Pz/Ptot)<30 to Q1 lost C shift & align with Q1-TGT axis

  4. 25 deg 25 deg FAT SHORT TILTED TGT

  5. Tgt_long_slim_rot0: y:x Nprimaries=100M

  6. Tgt_long_slim_rot0: x {abs(y)<.5 mm} Nprimaries=100M

  7. Tgt_long_slim: y:x rotation 25 deg + shift 4.226

  8. At Q1 plane, Q1 bore

  9. Tgt_tilt25_rot0: y:x Nprimaries=10M

  10. Tgt_tilt25_rot0: x {abs(y)<.5 mm} Nprimaries=10M

  11. At Q1 plane, Q1 bore

  12. Tgt_short_fat_rot0: y:x

  13. Tgt_cyl_rot0: y:x

  14. shape primaries(p) Dx(mm) h(mm) Q1-bore x-section(mm^2) scal fact Q1-bore resc Status cyl 100M +/-3 4 1464 24 6 8784 short fat 100M +/-5 4 1714 40 10 17140 long slim 100M +/-.5 4 15977 4 1 15977 tilt+25 (\) 100M +/-2.56 4 3092 20.48 5.12 15831 tilt+10 100M +/-1.36 4 6010 10.885 2.7212 16354 tilt-25(/) 100M +/-2.56 4 3300 20.48 5.12 16896 tilt-10 100M +/-1.36 4 6061 10.885 2.7212 16493 long slim 500M short fat 500M +/-5 4 8184 40 10 16368 cyl 500M tilt+25 500M tilt+10 500M fullcyl 5M +/-3 4 194 24 6(x20) 23280 fullcyl 100M

  15. Q1 Q1 Q1 bore CAVEAT: take this numbers with a pinch of salt but … 10M beam protons produce: 155K secondaries [20,30]deg of which only ~16K go through the tgt window and reach the Q1 bore Message: what a waste of statistcs !!! to Q1 lost C shift & align with Q1-TGT axis

  16. (x,y,Px,Py) the idea is assuming a cylindrical simmetry and try to enrich the sample pointing at Q1by rotating the events (xr,yr,Pxr,Pyr) A

  17. I am at this stage: I can create the enriched sample BUT I noticed some • strange shapes of y vs x distribution. • I am scared something not right in the re-enrichment of the sample • I am checking it • Once solved I can • shoot these particles into the beamline • rotate the target (see examples next page) • shift the target (and study misalignment) shape primaries(p) Dx(mm) h(mm) Q1-bore x-section(mm^2) scal fact Q1-bore resc Status cyl 100M +/-3 4 1464 24 6 8784 F short fat 100M +/-5 4 1714 40 10 17140 F long slim 100M +/-.5 4 15977 4 1 15977 F tilt+25 (\) 100M +/-2.56 4 3092 20.48 5.12 15831 F tilt+10 100M +/-1.36 4 6010 10.885 2.7212 16354 F tilt-25(/) 100M +/-2.56 4 3300 20.48 5.12 16896 F tilt-10 100M +/-1.36 4 6061 10.885 2.7212 16493 F long slim 500M R short fat 500M +/-5 4 8184 40 10 16368 R cyl 500M R tilt+25 500M R tilt+10 500M R fullcyl 5M +/-3 4 194 24 6(x20) 23280 F fullcyl 100M R

More Related