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Uranium Neutrino Experiment Setup

Detailed setup and beam optics for the neutrino line experiment using Uranium species. Methods for reducing beam particles at the target and stripping effects discussed.

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Uranium Neutrino Experiment Setup

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  1. Uranium setup for the neutrino line experiment

  2. Schematic diagram of Booster_BtA_AGS Complex SS_A06 Injection Point and Matching point SS_A05_kicker SS_L20_Injection Septum L20 Pos. & Ang. Inj. Bumps AGS G and H extraction bumps to AtR BtA H10 Extraction Septum to AtR SS-H13 Start AtR Line Booster Exit SS_F6_Septum Extraction Point Beginning of BtA U_Line Extraction Bumps SS_F03_kicker

  3. Schematic arrangement of current transformers and Flags/stripping foils in the U/W line during U+90 +91+92transport 4.250 bend U+90 +91 +92 U+90 80 bend uxf1 200 bend Uf1 Uf2 W foil 0.025 mm Uf3 Uf4 Uf5 uxf3 Au+77 +78 +79 Wf1 wxf1 U+90 +91 +92 Uf1,Uf2,Uf3,Uf4, Uf5 (2 mil Gd2O2S:Tb on 1 mil Al subtray) Wf2 Wf1,Wf2, Wf3 (2 mil Gd2O2S:Tb on 1 mil Al sub tray) Wf3

  4. Uranium beam at AGS Extraction • species 238U+90 • B=92.816 Tm • rel=0.995125 • =10.14065 • t=25 ns

  5. Beam Optics (AGS to target of Neutrino Line) • Establish circulating beam in AGS at extraction energy with extraction bumps turned on. • Start at G10 kicker location (G10 kicker ON) and transport the beam down to neutrino line. • Constrains used in beam transport: • Maintain beam size to clear beam apertures. • Beam achromatic at the target location???

  6. Stripping effect of Wstripperor Uf2 on U+90

  7. How do we reduce the beam at the target to 5000 particles/bunch • Focus the U+90 on target and use dipole and quadrupoles to deflect the core of the beam and also defocus it. • Focus the U+90 on target and use insert the Wsripperand/or the Uf2 flag to strip away the tripped U ions and hope the intensity of the unstripped ions is good enough to be detected at the target. Alternatively change the setting of the 8o bend to allow the U+91beam which has higher intensity.. • Focus the U+90 on target and use insert flags down stream of the 8obend. Defocus the beam using Q10 to Q13 qudrupoles.

  8. Stripping of 10.3 GeV/n Au+77 ions Using: a) 1.0 [mm] Al2O3 b) 0.025 [mm] W foilc) 0.051 [mm] Gd2O2S:Tb on 0.0254 [mm] Al Only results from measurements are presented. For any other information on the measurements please conduct tsoupas@bnl.gov tsoupas@bnl.gov

  9. Schematic arrangement of incoming Au+77 ions, the stripping foil and the ions emerging after the foil Au+77 Au+77 Au +78 Au+79 Stripping foil tsoupas@bnl.gov

  10. Measurements of some quantities after stripping.See next slide for explanation * The symbol “<“ in the Table signifies that the value of the measured quantity is below the resolution of the measuring device.

  11. Explaining the Table of the previous slide tsoupas@bnl.gov

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