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Author(s)
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Felice, H (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Anerella, M D (Brookhaven Natl. Lab.) ; Bocian, D (Fermilab) ; Bossert, R (Fermilab) ; Caspi, S (LBL, Berkeley) ; Collins, B (UC, Berkeley (main)) ; Cheng, D (LBL, Berkeley) ; Chlachidze, G (Fermilab) ; Dietderich, D R (LBL, Berkeley) ; Ferracin, P (LBL, Berkeley) ; Godeke, A (LBL, Berkeley) ; Ghosh, A (Brookhaven Natl. Lab.) ; Hafalia, A R (LBL, Berkeley) ; Joseph, J M (LBL, Berkeley) ; Krishnan, J (LBL, Berkeley) ; Marchevsky, M (LBL, Berkeley) ; Sabbi, G (LBL, Berkeley) ; Schmalzle, J (Brookhaven Natl. Lab.) ; Wanderer, P (Brookhaven Natl. Lab.) ; Wang, X R (LBL, Berkeley) ; Zlobin, A (Fermilab) |
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Abstract
| In the past two years the US LARP program carried out five tests on a quadrupole magnet aimed at the high luminosity upgrade of Large Hadron Collider (HiLumi-LHC). The 1-meter long, 120 mm bore Nb$_3$Sn IR quadrupole magnet (HQ) with a short sample gradient of 219 T/m at 1.9 K and a conductor peak field of 15 T is part of the US LHC Accelerator Research Program (LARP). In a series of tests, carried out at 4.4 K, the magnet reached a maximum “short-sample” performance of 86%. The tests exposed several shortcomings that are now being addressed in a Research & Development program. This paper summarizes the magnet test results, reveals findings, R&D; actions and future improvements. |