 Wed Oct 18 12:14:09 2023, Emma Walker, Processing file for EAR-1 with WF applied, Si-30 
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| Weighting function for Si-30, Au22, Au20 and Sinatgood applied for parasitic and dedicated beams. |
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Wed Aug 30 12:08:45 2023, Michael Donnachie, Processing files
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| Here are the Processing files for EAR1 and EAR2 with calibrations. |
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Tue Aug 29 10:32:35 2023, Michael Donnachie, EAR1 Parasitic vs Dedicated runs 6x
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Below are the histograms of parasitic vs dedicated runs for EAR1. Also included are histograms with ambient background removed which closes the
gap between parasitic and dedicated histograms. This was preformed by scaling the ambient by counts by a multiplication of (dedicated or parasitic) bunch
number/ambient bunch number. There are no legends but the dedicated counts are in black and parasitic counts in red. Only included are C6D6 1 detectors |
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Mon Aug 28 14:07:23 2023, Michael Donnachie, EAR2 Experiment vs Simulated Amplitude Spectrums 28x
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Attatched are the overlayed compton edges for the calibrated experimental and the GEANT4 simulations. Note p1 and p2 denotes the lower and higher energy
compton edges for Yttrium.
The experimental and simulated histograms are shifted in quite a few of these plots suggesting the calibration was not fully successful. |
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Mon Aug 28 12:21:09 2023, Michael Donnachie, EAR2 STED Calibration Parameters 8x
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Calibration parameters for each STED detector: With function f=p0+p1*x+p2*x*x
Detector
p0 Value
p0 Error
p1 Value
p1 Error
p2 Value
p2 Error
STED |
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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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Mon Jul 31 12:00:02 2023, Nikolay Sosnin, EAR2 Silicon Samples
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Fri Jul 28 12:19:10 2023, Michael Donnachie, EAR2 consistency checks, PKUP BCT SILI and normalised counts 10x
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The EAR2 ratios of BCT/PKUP, BCT/SILI and PKUP/SILI plotted for each run for samples Si, Sinat, Au20, Au22 and Dummy.
Also included is the normalised counts (counts/BCT) with 7 detectors on one plot (STED8 was ommited). 'counts' for Si
was integreated over the Si resonance, for Au it was integrated over the largest resonance. For Dummy and Sinat the counts were integrated over a |
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Fri Jul 28 12:07:33 2023, Michael Donnachie, EAR2 C6D6 timeshift issues
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There seems to be issues with the EAR2 C6D6 T histograms. For Au the earlier run seems to be shifted for detector 2 compared to the rest.
For Si plotted is 3 different runs 216123, 216128 and 216135 for both detectors. The histogram is messy but highlights that there
is a problem. The single Si resonace should be around 20 000ns and this is only the case for run216128. |
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Mon Jul 24 10:32:39 2023, Michael Donnachie, Consistency Checks BCT PKUP SILI 6x
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| The EAR1 ratios of BCT/PKUP, BCT/SILI and PKUP/SILI plotted for each run for samples Si, Sinat goodfellow, Au20, Au22, Empty and Dummy. |
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Fri Jul 21 10:45:22 2023, Michael Donnachie, Consistency Checks BCT PKUP comparrisons 12x
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The ratios for BCT/PKUP for Si, Au20, Au22, Dummy, Empty and Sinat goodfellow have been plotted. Also included is the normalised counts (counts/BCT)
with all 4 detectors on one plot. Apologies there is not a legend, however det1 is red, det2 is green, det3 black and det4 blue. 'counts' for Si
was integreated over the Si resonance, for Au it was integrated over the largest resonance. For Dummy, Empty and Sinat the counts were integrated over |
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Mon Jul 17 14:49:16 2023, Nikolay Sosnin, Mounted Si-nat Sample
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| Goodfellow Si-nat mounted at EAR1. First run: 116551 |
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Mon Jul 17 12:30:28 2023, Nikolay Sosnin, Si-nat Goodfellow Sample Properties
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Goodfellow sample has been deposited on a single Mylar foil and glue is drying.
mass = 2.932 g
diameter = 20.0 mm |
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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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Mon Jul 17 10:06:35 2023, Nikolay Sosnin, State of the Union: Campaign Update 17.07.2023
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EAR1: Si-nat sample fell off the holder during maintenance (before run 116544), appears intact and undamaged. Placed it back in-beam for further EAR1
measurements and subsequent transfer to EAR2.
EAR2: Replaced DUMMY with 30Si. Photo during alignment and photo of sample in holder attached. |
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Sat Jul 15 07:33:32 2023, Nikolay Sosnin, 30Si EAR2 6x
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8 sTED + 2 C6D6
C6D6: distance = 14 cm, angle = 135 degrees
sTED horizontal ring, distance for each detector from target = 4.5 cm. sTED labeled 8 in the DAQ is actually sTED #9 at n_TOF (actual sTED #8 |
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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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Thu Jul 13 12:27:44 2023, Michael Donnachie, CLW, Calibration Parameters 24x
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Calibration parameters for each detector:
detector
y-intercept (value)
y-intercept
(error)
gradient (value)
gradient (error)
1
3.71330E-02
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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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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. |