Below are histograms for the weighted spectra (with deadtime correction) with and without ambient for C6D6 detector 1.

For each sample the histogram with ambient is first and then without ambient (please ignore histogram titles). 

The Dummy, Empty and C-nat have been rebined by combining 100 to 1.

The Au20, Au22, Si-30 and Sinatgood have been rebined by combining 10 to 1.

Si-30 WF used for: Si-30, Dummy, Empty, C-nat

Au20 WF used for: Au20

Au22 WF used for: Au22

Sinatgood WF used for: Sinatgood

Below are graphs for each sample (weighted) showing the comparison between ambient spectra, empty/dummy holder and sample spectra. 

All four detectors are shown for each sample (Si-30, Au20, Au22, Sinatgood). 

All histograms have been rebinned by 50. 

Below are graphs for the comparison between background corrected and uncorrected spectra (weighted) for Si-30, Au20, Au22 and Sinatgood.

This is just for C6D6 detector 1 but all detectors are consisitent. All histograms have been rebinned by 100 for clarity. 

77Se: m=0.9916 g; D= 20 mm

OLD: 77Se: m=0.919 g according to ntofdaq page. D~ 20 mm NEEDS TO BE CONFIRMED

78Se: m=1.989/pm0.001 g; D=20.09mm; t~1.7 mm

68Zn: m=1.998/pm0.001 g; D=20.02mm; t~1.39 mm

Distance Sample to Detector: Det1: ~10.5 cm, Det2: 11 cm, Det3: 11 cm, Det4: 11 cm

 https://docs.google.com/spreadsheets/d/1W1T2rC10UtOtrAaT8-ZAKFvX70v2PwDk_4-goYL-brI/edit?usp=sharing

Photos of the  68Zn(n,gamma) measuremement setup at n_TOF EAR-1.

Default TTOFSort dead time setting of 30 ns is ok.

30Si
Mass: 0.9925(1) g;    Diameter: 22.22(1) mm;    Thickness: 1.77(4) mm;

natSi
Mass: 1.0653(2)g;    Diameter: 19.94(2) mm;    Thickness: 1.91(3) mm;

Mass of sample pre-treatment (sintering ...)

natSi 1.0238 g
30Si:  0.75034 g

Here are all the files needed for calculation of the yield. There is some information that still needs to be added to the energyandyield.c file, for example the atomic mass of your target in amu, the neutron separation energy for the compound nucleus in MeV (this is needed due to using the Weighting technique). Also, you need to add some lines  to read the tof histogram, which will then be converted in a neutron energy hisogram and then divided by the flux.

For the conversion to neutron energy we assume an approximate flight path for now. We will determine this more accurately once we have the yields and fit resonances. Emma will need to use a different flux than Annie, because we have a different spallation target. Emma's flux is preliminary, so we also should look at the SILI detectors at some point.

There are some more instances where names for rootfiles and ascii files need to be added. In the first instance, please try and add the missing information and try running the code. I haven't tested it so there may be still problem.  To run it you will need to download the 3 rootfiles into the same folder (or move somewhere else and adjust the path name in the .c file.

PLEASE set variable THRESHSCALER to 1 for now. We dont know yet what it is :-)

Au and Si29 runs normalised by proton number show consistency (dedicated pulses, example detector 4). Plots for tof spectra zooming on one resonance and histogram of counts in this resonance divided by protons with statistical errors.

Plots were produced with the macros attached.

Isoflex certificates for enriched silicon samples

Si Set up images and documentation.

Detector 1 - C6D6D: Distance= 9 cm, Angle= 135 deg relative to BL (check set up pdf for drawing if unsure), Voltage= 1550 V

Detector 2 - C6D6E: Distance= 9 cm, Angle= 135 deg relative to BL, Voltage= 1590 V

Detector 3 - C6D6H: Distance= 9 cm, Angle= 135 deg relative to BL, Voltage= 1450 V

Detector 4 - C6D6L: Distance= 9 cm, Angle= 135 deg relative to BL, Voltage= 1460 V

Note: Voltages were increased by 30V after the first few runs, these voltages are titled as "new voltages" in the DAQ when they were being tried out, and are now the final voltages.

New 22mm sample compared to old 20mm sample used at the beginning of the campaign + picture of dummy target in the setup.

Both Au samples (20mm and 22mm) are single mylar.

Both Si30 (22mm) and natSi (20mm) are double mylar.

Empty is single mylar ONLY

Dummy is double mylar + glue 

All plots in the ratios all look pretty contstant. Zn1 for all detectors seems to have some strange spike in the integral, and a dip in the SILI measurements (and therefore in the SILI/PKUP ratio). 

Det1 & Det4 dont look great for the Integral/Proton plots, im planning to make these plots with the PKUP protons and SILI and then comapre all of those errors and ratios that come from those, so we'll see what that comparison brings. 

Nothing has been seperated by dedicated or paracitic beam yet, so those comparisons need to be made too. 

Plots for Zn and Au with Empty subtracted, and compared to weighted spectra.

Note: Au are logged x and y, Zn is only logged x.