 Fri Oct 27 17:13:58 2023, Emma Walker, Si-30: Dedicated vs Parasitic before and after removal of ambient 14x
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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. |
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Mon Nov 6 11:13:11 2023, Emma Walker, Comparison of empty, ambient and sample- Si-30 16x
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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. |
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Tue Nov 7 13:21:51 2023, Emma Walker, Si-30: Comparison between background corrected and uncorrected
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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. |
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Fri Nov 3 11:19:53 2017, Claudia, Sample Preparation
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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 |
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Fri Nov 3 11:22:43 2017, Claudia, Detector Configuration
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Distance Sample to Detector: Det1: ~10.5 cm, Det2: 11 cm, Det3: 11 cm, Det4: 11 cm
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Fri Nov 3 15:06:51 2017, Claudia, Measurement Schedule updated
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Fri Jul 3 14:01:38 2020, Claudia, Link to Ruchi's list of runs + description
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| https://docs.google.com/spreadsheets/d/1W1T2rC10UtOtrAaT8-ZAKFvX70v2PwDk_4-goYL-brI/edit?usp=sharing |
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Tue Apr 11 14:07:43 2023, Claudia, Photos of the Zn68 measurement setup
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| Photos of the 68Zn(n,gamma) measuremement setup at n_TOF EAR-1. |
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Thu Jul 13 14:19:37 2023, Claudia, dead time 30Si run
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| Default TTOFSort dead time setting of 30 ns is ok. |
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Mon Jul 17 11:30:54 2023, Claudia, Properties Silicon powder samples
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30Si
Mass: 0.9925(1) g; Diameter: 22.22(1) mm; Thickness: 1.77(4) mm;
natSi |
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Wed Nov 15 13:40:50 2023, Claudia, Determination of neutron capture yield and related corrections
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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 |
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Thu Apr 4 09:50:36 2024, CLW, First Si analysis 2024 run 6x
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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. |
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Fri Jun 7 15:58:24 2024, CLW, ISOFLEX Certificates for enriched Si samples
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| Isoflex certificates for enriched silicon samples |
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Thu Jun 15 09:57:01 2023, Annie, Si Set Up 12x
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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 |
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Thu Jun 22 10:37:39 2023, Annie, Gold 22mm Sample Images
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| New 22mm sample compared to old 20mm sample used at the beginning of the campaign + picture of dummy target in the setup. |
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Thu Jun 29 09:21:13 2023, Annie, Info on Samples
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Both Au samples (20mm and 22mm) are single mylar.
Both Si30 (22mm) and natSi (20mm) are double mylar.
Empty is single mylar ONLY |
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Fri Aug 4 10:45:05 2023, Annie, Zn Plots: Normalised Spectra, Ratio Plots, Integral/Protons vs Cut (all dets) 27x
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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 |
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Tue Oct 24 11:29:46 2023, AR, Weighted Histograms Vs Deadtime*Corrected: 68Zn 24x
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Wed Nov 8 11:47:44 2023, AR, Zn68 TTOFSort codes 6x
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Thu Nov 30 14:43:28 2023, AR, Zn + Au Background subtraction: Plots 21x
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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. |