Warning, /analysis/EIC-IR/input_ir/updated-magnets-2017.dat is written in an unsupported language. File is not indexed.
0001 ## 12/2/2017 forward hadrons at 275 GeV/c
0002 ## using Palmer's file is beta82cf
0003 ## For 'High Luminosity' parameters giving, with electron energy 10.1 GeV, Lum = 2.86 10^33
0004 ## Plots and other parameters were distributed on 11/2/2017 in a file 1702-IR Design-v2.pdf
0005 ##
0006 ## The design reflects Sergei's shift of B3 to the right by 9.4 m
0007 ## A new quad NQ was introduced to better control the betas at R3 and R4
0008 ##
0009 ## Warning:
0010 ## This design was simulated by a home made program and may not exactly agree with
0011 ## madX and other codes
0012 ## There are probably other errors
0013 ## ----------------------------------------------------------
0014 ## Initial conditions at IP
0015 ##
0016 ## beta*_x beta*_y g emit_x g emit_y angle_x angle_y
0017 ## [m] [m] [nm] [nm] [mrad] [mrad]
0018 ##
0019 ## 0.9440 0.0420 16.1000 6.1000 22 0
0020 ## -----------------------------------------------------------
0021 ## magnet parameters
0022 ##
0023 ##name center_z center_x center_y aperture_radius length angle B gradient
0024 ## [m] [m] [m] [m] [m] [mrad] [T] [T/m]
0025 ##
0026 B0pf 5.100 0.0990 0.00 0.1700 1.200 22.00 -1.700 0.00
0027 Q1pf 7.291 0.1320 0.00 0.0370 1.981 18.00 0.000 -91.54
0028 B1pf 13.201 0.2301 0.00 0.0890 4.800 24.80 3.516 0.00
0029 Q2pf 17.461 0.3830 0.00 0.1250 2.520 20.00 0.000 28.41
0030 Q3pf 37.201 1.1741 0.00 0.0500 1.200 38.20 0.000 0.89
0031 B2pf 44.101 1.2949 0.00 0.0500 7.800 20.20 -4.397 0.00
0032 Q4pf 54.001 1.4447 0.00 0.0500 1.200 0.00 0.000 28.96
0033 B3pf 66.201 1.2804 0.00 0.0500 8.800 -19.80 -4.400 0.00
0034 NQpf 73.001 1.1724 0.00 0.0600 1.200 -41.54 0.000 -52.52
0035 Q5pf 88.401 0.5361 0.00 0.0400 1.000 -41.47 0.000 55.00
0036 ## H1pf 93.776 0.2280 0.00 0.0500 8.750 -41.45 0.000 0.00
0037 ## Q6pf 104.651 -0.1487 0.00 0.0400 2.000 -41.45 0.000 27.50
0038
0039 ## The apertures of B2 and B3 may be too large requiring changes in settings
0040 ## H1 is the spin rotator assumed not to focus or bend
0041 ## Q5 and Q6 are place holder for strengths to be set by matching
0042 ## ------------------------------------------------------------------------------
0043 ##
0044 ## parameters at the Roman Pots
0045 ##
0046 ##loc Z beta_x beta_y adv_x adv_y Disp
0047 ## [m] [m] [m] rad/pi rad/pi {m}
0048 ##
0049 ## R1 31.00 1197.6 195.70 0.476 0.52 0.205
0050 ## R2 35.00 1208.2 164.58 0.477 0.53 0.253
0051 ## R3 83.55 12.5 12.27 0.597 0.79 -2.051
0052 ## R4 86.40 4.4 5.54 0.722 0.90 -2.404
0053
0054 ## Phase advance x in R3 should be kept to approx 0.6 and may need tweeking
0055 ## beta_y in R3 should be 12 m or more
0056 ##--------------------------------------------------------------------------------
0057 ## my next iteration will/may:
0058 ## lower beta_x at B2 and B3 to allow use of RHIC magnets
0059 ## require a new quad between Current Q1 nd B1 for the VHL case
0060 ## a lower beta_x at R3 and R4 to maintain acceptances
0061 ## This will presumably be for after the March review
0062
