50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Tool to align the solenoid on the gun.
|
|
# S. Bettoni, A. Gobbo, D. Voulot
|
|
# 30/05/2016
|
|
|
|
# Procedure:
|
|
# switch off all the magnets between the gun solenoid and the screen or BPM used for the measurement
|
|
# change the current of the gun soleoid
|
|
# look at the centroid position (BPM or screen) downstream of the gun.
|
|
|
|
I_set = Channel("SINEG01-MSOL130:I-SET")
|
|
I_get = Channel("SINEG01-MSOL130:I-READ")
|
|
# cam_x, cam_y = ... # some camtool command / channel?
|
|
bpm_x = ai1 # Channel("SINEG01-DBPM340:X1")
|
|
bpm_y = ai2 # Channel("SINEG01-DBPM340:Y1")
|
|
|
|
def ccr(mag):
|
|
n = 1
|
|
while n > 0:
|
|
sleep(0.5)
|
|
n = caget(mag + ":I-COMP")
|
|
def laser_on():
|
|
print(laser_on) #caput("SIN-CVME-TIMAST-TMA:LaserDelayControl", 0)
|
|
def laser_off():
|
|
print(laser_off) #caput("SIN-CVME-TIMAST-TMA:LaserDelayControl", 1)
|
|
|
|
I1 = 2.0
|
|
I2 = 5.0
|
|
dI = 0.5
|
|
|
|
# Switch off magnets
|
|
mag = ["SINEG01-MCRX120","SINEG01-MCRY120"]
|
|
for m in mag:
|
|
caput(m + ":I-SET", 0.0)
|
|
for m in mag:
|
|
ccr(m)
|
|
|
|
# Scan using the screen
|
|
#r = lscan(I_set, [I_get, cam_x, cam_y], I1, I2, dI, passes = 2, zigzag = True)
|
|
# Scan using the BPM
|
|
r = lscan(I_set, [I_get, bpm_x, bpm_y], I1, I2, dI, 1.0, before_read = laser_on(), after_read = laser_off())
|
|
|
|
# take the result of the scan and do the plots
|
|
plot(r.getReadable(2), xdata=r.getReadable(1), title = "Centroid excursion")
|
|
|
|
# save the entry in the logbook
|
|
msg = str(r)
|
|
msg = msg + "\nFile: " + get_context().path
|
|
msg = msg + "\n\n" + r.print()
|
|
elog("Gun solenoid current scan", msg , get_plot_snapshots())
|