Project.............................. Daisy first pitot shot with 80% He
Run number........................... x2s3667
Date.................................5/10/2017 
Blame................................ Yu Liu, Chris James, Ranjini Ramesh, Steven Lewis
Reservoir...............................  6.0 MPa (gauge)
Driver...................................He to 772mbar, flushed once with He to 50mbar
Primary diaphragm.................... 2.5 mm cold rolled steel, scored diaphragm
Shock tube........................... 2000 Pa 20%H2/80%He in bottle filled 28/09/17 (filled on 100 torr gauge)
Secondary diaphragm.................. Al Multiex diaphragm (approx 14 microm thick)
Acceleration tube.................... 0.5 Pa lab Air (filled on 1 torr gauge) (or as low as we can get)
Trig.................................. photodiode into X2 microsec delay box (Tr value set at 40)

EXPERIMENT
First Daisy pitot shot. Added more oil to diff pump this morning.

Photodiode trigger

Separate function generator to trigger mini spectro:
delay 0us
freq 50Hz
Amp1: 10Vpp

Spectrometer:
f=50mm lens at approximately 1.2m, aimed at pt5. Unknown lens material. 
Exposure: 50us 
Window: Perspex

HS:
Nikkon AF micro 200mm
f/5.6
250kHz
50 pre trigger frames
1/2 frame exposure
1x gain
FGL400S filter to cut off light below 400 nm to remove Aluminium contamination

