 Mon Oct 7 14:07:26 2024, AR, Zn update slides 04/10 
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| Models Vs Resonance amp spectra |
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Mon Sep 9 11:06:19 2024, AR, Zn update slides 06/08/2024
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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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Tue Apr 16 15:24:45 2024, AR, Zn68 Analysis: Au resonance SAMMY fits
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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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Tue Mar 26 11:04:29 2024, AR, Si-29 and Si-28 sample images and info 11x
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Sample information Excel sheet attached below.
Images 1-6: Si-29 sample
Images 6-10: Si-28 sample |
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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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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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Fri Mar 1 14:35:04 2024, AR, Zn updated wartime v weighted plots 13x
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| Updated plots with new WFs. Rebinned by 10. |
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Tue Feb 27 11:37:39 2024, AR, Updated Au Deadtime Corrected Spectra & Weighted Spectra Plots 12x
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Plots made with new weighting functions. All rebinned by 10.
Attatchments 1-4: Detector 1.
Attatchments 5-8: Detector 2. |
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Fri Dec 1 15:34:01 2023, AR, Corrected BG Subtraction plots for Zn and Au 6x
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| Updated plots for Zn and Au |
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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. |
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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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Wed Nov 8 11:47:44 2023, AR, Zn68 TTOFSort codes 6x
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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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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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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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Tue Oct 24 11:29:46 2023, AR, Weighted Histograms Vs Deadtime*Corrected: 68Zn 24x
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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. |
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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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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. |
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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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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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Fri Jul 29 17:21:47 2022, Ragan, Enriched Si-30
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| Attached are the pictures of enriched Si-30 metal pieces. |
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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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Mon Jan 25 16:11:54 2021, Nikolay Sosnin, 25.01.2021: Cross-section Calculation Update
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Mon Oct 5 15:01:04 2020, RG, Monday meeting slides: 05 Oct
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| Summary of work done so far. |
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Mon Oct 5 14:54:55 2020, Nikolay Sosnin, Overall Progress: Monday Meeting 05.10.2020
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Fri Oct 2 14:01:24 2020, RG, Monday meeting slides: 28 Sep
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| Further investigation into dedicated and parasitic discrepancy. |
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Fri Oct 2 13:59:05 2020, RG, Monday meeting slides: 21 Sep
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Dedicated and parasitic discrepancy (Au 5eV resonance plateau) - quantified.
Flux and E_exc numalisation after sum WF. |
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Fri Oct 2 13:55:52 2020, RG, Monday meeting slides: 14 Sep
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Discrepancy between dedicated and parasitic pulses histograms in the 5eV gold resonance plateau region.
Corrected tof to En conversion.
E_excitation and flux normalisation of yield. |
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Fri Oct 2 13:47:59 2020, RG, Monday meeting slides: 07 Sep
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Proton consistency test (BCT, SiMon, weighted, unweigted, dedicated, parasitic) - Au cal1 and Se78
BG subtraction
TOF to En conversion |
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Tue Sep 29 18:36:03 2020, Nikolay Sosnin, SAMMY Fits to Known Se77 Resonances: Meeting 28.09.2020
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Mon Sep 14 13:47:26 2020, Nikolay Sosnin, Summed WF: Monday Meeting 14.09.2020
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Mon Sep 7 13:57:28 2020, Nikolay Sosnin, SAMMY Fits Au197: Monday Meeting 07.08.2020
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Fri Aug 7 10:57:10 2020, Ruchi, Monday meeting slides: 03 Aug
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Fri Aug 7 10:56:03 2020, Ruchi, Monday meeting slides: 27 Jul
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Fri Aug 7 10:55:43 2020, Ruchi, Monday meeting slides: 20 Jul
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Fri Aug 7 10:53:14 2020, Ruchi, Monday meeting slides: 13 Jul
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Fri Aug 7 10:50:57 2020, Ruchi, Monday meeting slides: 06 Jul
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Fri Aug 7 10:39:18 2020, Ruchi, TTOFSort processing macro and files path
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/eos/user/r/rugarg/public/2017_10_ng_ZnSe/
Latest 4 processing scripts:
1. process_runs_Au1_Jul20.C = Au runs (Se78 part), empty holder runs (Se78 part), and beam-off runs (Se78 part) processed with Au weighting |
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Mon Aug 3 14:27:18 2020, Nikolay Sosnin, Dead-time and BG Subtraction Meeting Slides
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My TTOFSort macro is located in
/afs/cern.ch/work/n/nsosnin/public/C6D6_Calibration/Calibration_Data/Calibrator.C |
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Mon Jul 27 17:40:41 2020, Nikolay Sosnin, Meeting Slides (Calibrations + WFs)
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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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Mon Oct 28 16:15:32 2019, Ruchi, Zn68 measurement setup
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Fri Nov 3 15:06:51 2017, Claudia, Measurement Schedule updated
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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 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 |