 Sat Mar 19 17:29:43 2022, Nikolay Sosnin, Al26 Experimental Inventory at n_TOF 
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Three aluminium crates contain 26Al(n, alpha) kit from EAR2, and was in the barracks (building 6547) near detector lab by EAR1 entrance. A list is attached
and photos can be found on Dropbox:
https://www.dropbox.com/sh/68k1xove2zr1bmj/AADKvN8wR_Ia2EwZMOXZqdMCa?dl=0 |
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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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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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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 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 31 12:00:02 2023, Nikolay Sosnin, EAR2 Silicon Samples
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Sat Mar 23 15:06:44 2024, Nick, Detector Setup - 28/29Si Campaign 2024 9x
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Campaign started yesterday. C6D6s placed at 9 cm distance, angle 125 degrees w.r.t beamline.
Measured calibration sources: Cs137, Y88, AmBe, CmC. Measuring Si-nat over the weekend.
Detector Voltage |
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Mon Mar 25 09:07:53 2024, Nick, Proton Monitoring
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| https://docs.google.com/spreadsheets/d/18lk27N6Pb2iT_xtDA-1T1c9vVubXTJ0OsaDjOxErP0I/edit?usp=sharing |
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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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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 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 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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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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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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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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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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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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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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Mon Oct 23 12:39:33 2023, Emma Walker, Si-30 corrected weighted and dead time corrections histograms (dedicated) 8x
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Si-30:
Histograms for dead time corrections for all 4 C6D6 detectors.
Histograms for weighted and deadtime corrected dedicated spectra. |
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Mon Oct 23 12:47:16 2023, Emma Walker, Si-30 weighted and corrected spectra and deadtime correction histograms (parasitic) 8x
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Si-30:
Histograms for deadtime correction for all 4 C6D6 detectors for parasitic beam.
Histograms for weighted and deadtime corrected parasitic spectra. |