Design and characterization of an antiproton deceleration beamline for the PUMA experiment

被引：0
|
作者：
Fischer, Jonas [1 ]
Schmidt, Alexander [1 ]
Azaryan, Nikolay [2 ]
Butin, Francois [2 ]
Somoza, Jose Ferreira [2 ]
Husson, Audric [1 ]
Klink, Clara [2 ]
Obertelli, Alexandre [1 ]
Schlaich, Moritz [1 ]
Sinturel, Alexandre [2 ]
Thaus, Nicolas [2 ]
Wienholtz, Frank [1 ]
机构：
[1] Tech Univ Darmstadt, Inst Nucl Phys, Schlossgartenstr 9, D-64289 Darmstadt, Hessen, Germany
[2] CERN, Espl Particules 1, CH-1211 Geneva, Switzerland
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2024年 / 550卷
基金：
欧洲研究理事会;
关键词：
Low-energy antiprotons; Ion beam deceleration; Pulsed drift tube; PUMA; NEUTRON; RADII; HALO;
D O I：
10.1016/j.nimb.2024.165318
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We report on the design and characterization of an antiproton deceleration beamline, based on a pulsed drift tube, for the PUMA experiment at the Antimatter Factory at CERN. The design has been tailored to high-voltage (100 kV) and ultra-high vacuum (below 10(-10) mbar) conditions. A first operation achieved decelerating antiprotons from an initial energy of 100 keV down to (3898 +/- 3) eV, marking the initial stage in trapping antiprotons for the PUMA experiment. Employing a high-voltage ramping scheme, the pressure remains below 2x10(-10) mbar upstream of the pulsed drift tube for 75% of the cycle time. The beamline reached a transmission of (55 +/- 3)% for antiprotons decelerated to 4 keV. The beam is focused on a position sensitive detector to a spot with horizontal and vertical standard deviations of sigma(horiz) = (3.0 +/- 0.1) mm and sigma(vert) = (3.8 +/- 0.2) mm, respectively. This spot size is within the acceptance of the PUMA Penning trap.
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页数：9
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