# na-shifted-echo-echo-96-phase-cycling-p3.in

# approach: 96-phase cycling the first pulse, the third pulse and the receiver

# spin-3/2 echo amplitude optimization
# versus the third-pulse duration
# in three-pulse shifted-echo phase-modulated -3Q-MAS sequence,
# the first-pulse duration p1 = 4 micro seconds
# the second-pulse duration p2 = 4 micro seconds

spinsys {
  channels 23Na
  nuclei   23Na
  quadrupole 1 1 1e6 1 0 0 0
}

par {
  spin_rate        5000
  variable tsw     0.25
  sw               1.0e6/tsw
  np               17
  crystal_file     rep100
  gamma_angles     10
  proton_frequency 800e6
  start_operator   I1z
  detect_operator  I1c
  verbose          1101
  variable rf      90000
  variable rf3     93000
  variable p1      4 
  variable p2      4 
}

proc pulseq {} {
  global par
  maxdt $par(tsw)

  acq $par(ph31)
  pulse  $par(p1) $par(rf) $par(ph1)
  pulse  $par(p2) $par(rf) x

  for {set i 1} {$i < $par(np)} {incr i} {
    pulse $par(tsw) $par(rf3) $par(ph3) 
    acq $par(ph31)
  }
}

proc main {} {
  global par

  foreach p {{  0   0  270}\
             { 30   0    0}\
             { 60   0   90}\
             { 90   0  180}\
             {120   0  270}\
             {150   0    0}\
             {180   0   90}\
             {210   0  180}\
             {240   0  270}\
             {270   0    0}\
             {300   0   90}\
             {330   0  180}\
             {  0  45    0}\
             { 30  45   90}\
             { 60  45  180}\
             { 90  45  270}\
             {120  45    0}\
             {150  45   90}\
             {180  45  180}\
             {210  45  270}\
             {240  45    0}\
             {270  45   90}\
             {300  45  180}\
             {330  45  270}\
             {  0  90   90}\
             { 30  90  180}\
             { 60  90  270}\
             { 90  90    0}\
             {120  90   90}\
             {150  90  180}\
             {180  90  270}\
             {210  90    0}\
             {240  90   90}\
             {270  90  180}\
             {300  90  270}\
             {330  90    0}\
             {  0 135  180}\
             { 30 135  270}\
             { 60 135    0}\
             { 90 135   90}\
             {120 135  180}\
             {150 135  270}\
             {180 135    0}\
             {210 135   90}\
             {240 135  180}\
             {270 135  270}\
             {300 135    0}\
             {330 135   90}\
             {  0 180  270}\
             { 30 180    0}\
             { 60 180   90}\
             { 90 180  180}\
             {120 180  270}\
             {150 180    0}\
             {180 180   90}\
             {210 180  180}\
             {240 180  270}\
             {270 180    0}\
             {300 180   90}\
             {330 180  180}\
             {  0 225    0}\
             { 30 225   90}\
             { 60 225  180}\
             { 90 225  270}\
             {120 225    0}\
             {150 225   90}\
             {180 225  180}\
             {210 225  270}\
             {240 225    0}\
             {270 225   90}\
             {300 225  180}\
             {330 225  270}\
             {  0 270   90}\
             { 30 270  180}\
             { 60 270  270}\
             { 90 270    0}\
             {120 270   90}\
             {150 270  180}\
             {180 270  270}\
             {210 270    0}\
             {240 270   90}\
             {270 270  180}\
             {300 270  270}\
             {330 270    0}\
             {  0 315  180}\
             { 30 315  270}\
             { 60 315    0}\
             { 90 315   90}\
             {120 315  180}\
             {150 315  270}\
             {180 315    0}\
             {210 315   90}\
             {240 315  180}\
             {270 315  270}\
             {300 315    0}\
             {330 315   90}} {
    set par(ph1)  [lindex $p 0]
    set par(ph3)  [lindex $p 1]
    set par(ph31) [lindex $p 2]

    set g [fsimpson]
    if [info exists f] {
      fadd $f $g
      funload $g
    } else {
      set f $g
    }
  }

  fsave $f $par(name).fid
  funload $f
  puts "Larmor frequency (Hz) of 23Na: "
  puts [resfreq 23Na $par(proton_frequency)]
}

# SIMP
# NP=17
# SW=4000000
# TYPE=FID
# DATA
# 0 0
# 0.274566696 5.55111512e-17
# 1.0734604 1.65145675e-15
# 2.25576975 9.85322934e-16
# 3.57194349 1.91513472e-15
# 4.72506507 2.88657986e-15
# 5.4455123 2.66453526e-15
# 5.5580759 2.77555756e-15
# 5.02372271 2.49800181e-15
# 3.94643491 1.33226763e-15
# 2.54563602 5.55111512e-16
# 1.10332039 -1.66533454e-16
# -0.0999344227 -1.63757896e-15
# -0.844877196 -1.73472348e-15
# -1.01663305 -1.13103971e-15
# -0.622885385 -2.11636264e-15
# 0.214831159 -5.30825384e-16
# END