Triplet layout parameters for 150mm 140T/m quadrupoles R. De Maria, S. Fartoukh (ABP-LCU)
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Triplet layout parameters for 150mm 140T/m quadrupoles R. De Maria, S. Fartoukh (ABP-LCU) 26/07/2012
description
Triplet layout parameters for 150mm 140T/m quadrupoles R. De Maria, S. Fartoukh (ABP-LCU) 26/07/2012. Introduction. A triplet layout is optically defined by the positions, (mag.) length and strengths of quadrupoles. - PowerPoint PPT Presentation
Transcript of Triplet layout parameters for 150mm 140T/m quadrupoles R. De Maria, S. Fartoukh (ABP-LCU)
Triplet layout parameters for150mm 140T/m quadrupoles
R. De Maria, S. Fartoukh (ABP-LCU)
26/07/2012
Introduction
A triplet layout is optically defined by the positions, (mag.) length and strengths of quadrupoles.
These specifications depend on the drift lengths needed to host the coil ends, interconnections, length of the correctors (dipole, skew quads, non linear...)
With respect to the last HL-LHC baseline layout (SLHCV3.1b), we have:
New apertures (150mm instead of 140mm)
New gradient (140T/m instead of 150T/m)
Q1-Q3 split in two halves
No new information on interconnect and corrector lengths w.r.t to PhaseI project.
Today we can only
rescale with strength and aperture the last layout, which in turn has been based on the PhaseI project estimates
Even if these estimates were correct, still not final are:
the type and strength of the non linear correctors the BPM locations
Tentative layout
Variations
No splitting 150T/m 140mm
l.q1/3 = 7.685 ;l.q2a/b = 6.577 ;dq1q2a = 3.56 ;dq2aq2b = 1.915 ;dq2bq3 = 3.56 ;totlen = 60.559 ;Beta* gain if 150mm: 14%;
No splitting 140T/m 150mm
l.q1/3 = 8.04 ;l.q2a/b = 6.826 ;dq1q2a = 3.81 ;dq2aq2b = 2.05 ;dq2bq3 = 3.81 ;totlen = 62.402 ;Beta* gain = 9.2%
Splitting Q1/3 140T/m 150mm
l.q1/3 = 8.485 ; (2 l + lqq)l.q2a/b = 6.772 ; dq1q2a = 3.81 ;dq2aq2b = 2.05 ;dq2bq3 = 3.81 ;lqq = 0.5 ;totlen = 63.184 ;Beta* gain = 6.8% ;
No splitting 135T/m 150mm
l.q1/3 = 8.285 ;l.q2a/b = 7.006 ;dq1q2a = 3.81 ;dq2aq2b = 2.05 ;dq2bq3 = 3.81 ;totlen = 63.252 ;Beta* gain = 6.7%
Interconnect lengths for 150mm aperture (Just guesses, please contribute!)
Between cryostats: 90cm Inside cryostats, between magnets or cryo lengths:
Quads: 57.5cm Dipole corr.: 45cm Dipole to a2 corr. (not scaled): 49.5cm a2 to b3 b6 corr. (not scaled): 39cm Other corr. (not scaled): 35cm
Backup
Nominal LHC
MQXA.1R1 0.507MCBXH.1R1 MCBXV.1R1 1.687BPMS.2R1.B1 0.521MQXB.A2R1 0.469MCBXH.2R1 MCBXV.2R1 0.531MQXB.B2R1 0.692 TASB.3R1 0.5545MQSX.3R1 0.2455 MQXA.3R1 0.479MCBXH.3R1 MCBXV.3R1 MCSX.3R1 MCTX.3R1 0.483MCOSX.3R1 MCOX.3R1 MCSSX.3R1 0.585
