| ID |
Date |
Author |
Subject |
|
44
|
Mon Jul 31 10:21:41 2023 |
Nikolay Sosnin | n_TOF Data and Filtering |
|
| Attachment 1: Al26_Filtering.pptx
|
|
81
|
Wed Feb 12 13:51:02 2025 |
CLW | expected counts B and Li |
The rootfiles countsB.root and countsLi.root contain histograms of count spectra that would be expected at n_TOF for a 10B and a 6Li target, respectively. The units in y are arbitrary. This can be used to check, if we can reproduce the expected trend with our Li and B measurements. So the histograms called "counts" can be directly compared to the histograms called "energy" in Sili_deed.c (they should have the same binning). You need to scale the histogram to get a decent overlap. You can use this also to estimate the neutron energy calibration - the thermal bump at low energy will give you a good idea of the flight path length. Structure at high energy will give you a better idea on the offset.
The files 6Li_endf.root and 10B_endf.root are the original cross section files, and countrate_calc.C is the file used to produce the count spectra.
|
| Attachment 1: 6Li_endf.root
|
| Attachment 2: 10B_endf.root
|
| Attachment 3: countsB.root
|
| Attachment 4: evaluated_flux_EAR2_DEC2022.root
|
| Attachment 5: countrate_calc.C
|
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>
#include <cmath>
#include "TRandom.h"
#include <math.h>
#include <TPolyLine.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>
#include "TTree.h"
#include <TROOT.h>
#include <TApplication.h>
#include <TRint.h>
#include <TSystem.h>
#include <TH1.h>
#include <TH2.h>
#include <TAxis.h>
#include <TGaxis.h>
#include <TCanvas.h>
#include <TGraph.h>
#include <TGraphErrors.h>
#include <TGraphAsymmErrors.h>
#include <TMultiGraph.h>
#include <TStyle.h>
#include <TKey.h>
#include <TLegend.h>
#include <TColor.h>
#include <TPad.h>
#include <TText.h>
#include <TPaveText.h>
#include <TBox.h>
#include <TLine.h>
#include <TMarker.h>
#include <TLatex.h>
#include <TMath.h>
#include <TF1.h>
#include <TFile.h>
#include <TClass.h>
#include "Math/Minimizer.h"
#include "Math/Factory.h"
#include "Math/Functor.h"
#include <TVirtualFitter.h>
using namespace std;
void RebinProperly(TH1F* hin, TH1F* hout);
Char_t *inputfile="6Li_endf.root";
Char_t *histo="xshighbin";
Char_t *outputfile="countsLi.root";
Char_t *output="counts";
int k=1;
void run()
{
// Read the flux
TFile *fflux = new TFile("evaluated_flux_EAR2_DEC2022.root", "read");
TH1F *eval = (TH1F*)fflux->Get("h_flux_ear2");
//Read the cross section
TFile *fcross=new TFile("10B_endf.root", "read");;
TH1F *hcross =(TH1F*)fcross->Get("xshighbin");
// create counr histogram with logarithmic binning for x axis, commonly used for neutron energy histograms
float Ene[20001];
for(Int_t u=0;u<=20000;u++)
{
Ene[u]=pow(10,(float(u)-6000)/2000);
}
TH1F *hcounts =new TH1F("","histo",20000,Ene);
hcounts->GetXaxis()->Set(20000,Ene);
// function to rebin the cross section histogram to the same binning as the counts histogram
RebinProperly(hcross,hcounts);
Int_t auxbin1;
Float_t scaler1;
// multiply by the n_TOF neutron flux (binning is in units of ExdPhi/dE, so independent of binning)
for(Int_t i=1; i<=hcounts->GetNbinsX(); i++)
{
auxbin1 = eval->FindBin(hcounts->GetBinCenter(i));
scaler1 = TMath::Log(hcounts->GetBinLowEdge(i+1)/hcounts->GetBinLowEdge(i));
if(hcounts->GetBinContent(i)>0 && eval->GetBinContent(auxbin1)>0)hcounts->SetBinContent(i, hcounts->GetBinContent(i)*eval->GetBinContent(auxbin1)*scaler1);
}
for(int i=1;i<=hcounts->GetNbinsX();i++){
if(hcounts->GetBinContent(i)==0)hcounts->SetBinContent(i,1);
hcounts->SetBinError(i,0);
}
hcounts->Scale(1/7000.);
hcounts->SetTitle("");
hcounts->GetXaxis()->SetTitle("Neutron Energy (eV)");
hcounts->GetYaxis()->SetTitle("Counts (arbitrary)");
TFile *fnew=new TFile(outputfile,"recreate");
hcounts->Write(output);
fnew->Close();
fflux->Close();
fcross->Close();
}
void RebinProperly(TH1F* hin, TH1F* hout){
for(int i=1;i<=hout->GetNbinsX();i++)
{
float content=0;
float error=0;
float errorsquare=0;
int zahler=0;
float specedgelow=hout->GetBinLowEdge(i);
float specedgehigh=hout->GetBinLowEdge(i+1);
int binlow=hin->FindBin(specedgelow);
int binup=hin->FindBin(specedgehigh);
if(binlow==binup){content=hin->GetBinContent(binup);error=hin->GetBinError(binup);} // (stat) error probably under-estimated in this case
if(binlow!=binup){
content=content+hin->GetBinContent(binlow)*(hin->GetBinLowEdge(binlow+1)-specedgelow); //add first bin
content=content+hin->GetBinContent(binup)*(-hin->GetBinLowEdge(binup)+specedgehigh); //add last bin
//cout<<hin->GetBinLowEdge(binlow+1)-specedgelow<<" "<<-hin->GetBinLowEdge(binup)+specedgehigh<<endl;
for(int q=binlow+1;q<binup;q++){content=content+hin->GetBinContent(q)*hin->GetBinWidth(q);} //add intermediate bins
content=content/(specedgehigh-specedgelow);
// error calculation
errorsquare=errorsquare+hin->GetBinError(binlow)*(hin->GetBinLowEdge(binlow+1)-specedgelow)*hin->GetBinError(binlow)*(hin->GetBinLowEdge(binlow+1)-specedgelow);
errorsquare=errorsquare+hin->GetBinError(binup)*(-hin->GetBinLowEdge(binup)+specedgehigh)*hin->GetBinError(binup)*(-hin->GetBinLowEdge(binup)+specedgehigh); //add last bin
for(int q=binlow+1;q<binup;q++){errorsquare=errorsquare+hin->GetBinError(q)*hin->GetBinWidth(q)*hin->GetBinError(q)*hin->GetBinWidth(q);} //add intermediate bins
error=sqrt(errorsquare)/(specedgehigh-specedgelow);
}
hout->SetBinContent(i,content);
hout->SetBinError(i,error);
}
}
|
| Attachment 6: countsLi.root
|
|
95
|
Mon Jul 21 10:30:01 2025 |
Selin | The 2D Energy Spectrum of Ca41 |
The 2D energy spectrum of Ca41 (36 runs). The expected alpha energies are 4.8 MeV (alpha_0) and 2.7 MeV (alpha_1). |
| Attachment 1: Screenshot_from_2025-07-21_08-51-09.png
|
|
|
30
|
Thu Oct 6 09:34:30 2022 |
Claudia | Test setup Photos and cabling |
Setup 5.10.22
dE 20 um (ID 2837-33) and 494 um double sided (ID 1194-9)
46 channels (2 connectors missing)
LiF4 in beam
dE: Big flat cables from preamp 22 and 23 into 1A and 1B
E: from preamp 24+25 go into 2A, 2B and 3A 3B
LEMO converter box: Cable 1: dE
Cable 3: E n+n
unlabeled cable: E p+n
E detector voltage: -133 V, leakage current -0.53 micro-Amp
dE detector voltage -22 V, leakage current -0.03 micro-Amp
For the E detector one of the edge p+n strip bond-wires is suspected broken. |
| Attachment 1: 20221005_174742.jpg
|
|
| Attachment 2: 20221005_174759.jpg
|
|
| Attachment 3: 20221005_184752.jpg
|
|
| Attachment 4: 20221005_184801.jpg
|
|
| Attachment 5: 20221005_174742.jpg
|
|
|
51
|
Thu Aug 10 11:30:32 2023 |
Nikolay Sosnin | Silicons and LiF3+Gafchromic Target |
|
| Attachment 1: EDET_150um_Box.JPG
|
|
| Attachment 2: EDET_150um.JPG
|
|
| Attachment 3: EDET_ID.JPG
|
|
| Attachment 4: DEED_20um_Box.JPG
|
|
| Attachment 5: LiF3_Gafchrmoic_Target_Mounted.JPG
|
|
| Attachment 6: LiF3_Gafchromic_Side.JPG
|
|
| Attachment 7: LiF3_Gafchromic_Front.JPG
|
|
| Attachment 8: Detector_Mount_and_LiF3.JPG
|
|
| Attachment 9: Detectors_Mounting.JPG
|
|
| Attachment 10: Detectors_Mounted_DEED.JPG
|
|
| Attachment 11: Detectors_Mounted_EDET.JPG
|
|
| Attachment 12: Detectors_and_LiF3_Gafchrmoic_TestPosition.JPG
|
|
| Attachment 13: Detectors_and_LiF3_Gafchrmoic_TestPosition_Back.JPG
|
|
| Attachment 14: Detectors_and_LiF3_Gafchrmoic_TestPosition_Below.JPG
|
|
| Attachment 15: Detectors_and_LiF3_Gafchrmoic_TestPosition_Above.JPG
|
|
| Attachment 16: Detectors_and_LiF3_Gafchrmoic_TestPosition_Tilt.JPG
|
|
| Attachment 17: Detectors_and_LiF3_Gafchrmoic_TestPosition_Front.JPG
|
|
| Attachment 18: Assembly_Insert.JPG
|
|
|
83
|
Fri Jun 20 09:49:11 2025 |
CLW | Silicon detector setup description |
|
| Attachment 1: SiliSetupEAR2.pdf
|
|
|
36
|
Sat Oct 8 11:56:49 2022 |
Nikolay Sosnin | Silicon Strips of Concern |
DEED 6 and 9 no signal throughout the campaign.
EFED 27 high oscillations in baseline throughout the campaign. |
|
85
|
Fri Jul 11 09:16:18 2025 |
TD | Silena 7710 Quad Bias Supply manual and internal configuration |
Manual - see attachment 1
Internal configuration
Voltage full scale - 400V/10uA
JP1/1-4 fitted
JP4 fitted *see note below
DVM card JP1 AB
HV jumpers AB
Current readout resolution - 10nA
DVM card JP2 LM
JP5/1-5 GH
Polarity - channels 1-4 negative
Note with channel 1 voltage set to -180V the output voltage measured by DMM is -40V.
The output impedance of the Silena 7710 outputs may be comparable to the input impedance of the DMM (DMM typically c. 20-40M) so the measured voltage will be a *lower*
limit.
With JP4 removed (per manual instructions for voltage full scale 400V/10uA) the front panel reads -20V with an output voltage measured by DMM of -40V.
Again, the measured voltage will be a lower limit.
By observation of the behaviour of the electronic noise of p+n junction and n+n Ohmic strips as a function of bias for MSL type W1 DSSSD 3353-4 (75um) the voltage
applied to the DSSSD is > depletion.
MSL QA tests report depletion voltage 28V and test/operating voltage 28+10V = 38V. |
| Attachment 1: Silena_7710_quad_bias_supply.pdf
|
|
|
58
|
Fri Aug 11 13:06:54 2023 |
Annie | Signal Spreadsheet info |
Spreadhseet made for shifters to manually enter that they have checked each signal and that they can see gamma-flashes. It is saved as "26Al_EAR2_Signal_Checks.ods", it is located on the second monitor on the right of the control room, next to the monitor used to see the beam intensity (same monitor used to see signals).
It will stay open throughout the campeign. Shifters have been told to check signals more than just the once to record that they're okay, and there is a comments box for shifters to add any comments/issues that arises after they have recorde that they have checked the signals at least once. |
| Attachment 1: IMG_2920.JPG
|
|
| Attachment 2: IMG_2921.JPG
|
|
| Attachment 3: IMG_2922.JPG
|
|
|
26
|
Fri Sep 2 12:03:40 2016 |
Sarah | SPD card changed |
14 bit card replaced for DEED 9-12, to prevent issue with pulser arriving before gamma flash. |
|
90
|
Wed Jul 16 08:55:22 2025 |
Selin | Run221141 Boron Uncalibrated Data |
Plots of Boron #1 run (221141) from the Ca41 campaign with the right voltage applied (11.07.2025).
1- Uncalibrated amplitude spectra of strip 1 (dedicated).
2- Uncalibrated 2d energy plot of Boron dedicated data.
3- Uncalibrated amplitude spectra of strip 22 (dedicated). The alpha-0 on the back strips has lower counts. |
| Attachment 1: B_Strip1.png
|
|
| Attachment 2: B_ded_2d.png
|
|
| Attachment 3: B_Strip22.png
|
|
|
89
|
Wed Jul 16 08:51:06 2025 |
Selin | Run221136 Lithium Uncalibrated Data |
Plots of Lithium #3 run (221136) from the Ca41 campaign with the right voltage applied (11.07.2025).
1- Uncalibrated amplitude spectra of strip 1 (dedicated).
2- Uncalibrated amplitude spectra of strip 1 (parasitic).
3- Uncalibrated 2d energy plot of Lithium dedicated data. |
| Attachment 1: Li_Strip1.png
|
|
| Attachment 2: Li_Strip1_Par.png
|
|
| Attachment 3: Li_ded_2d.png
|
|
|
86
|
Sat Jul 12 10:30:06 2025 |
Francisco García Infantes | Report Experimental SetUp Ca41 |
I'm attaching a report for the experimental setup so far.
There is a main problem which haven't been solved yet and I don't know if that can cause problem in the future analysis.
Channels #23, #24, #31 and #32 are not working well. The signal os these channels look attenuated from the pulser, make impossible to see then in the Boron run.
As these channels are in the back side of the detector, it could be possible to run like? Unless we have more ideas about to solve the problem.
The front channels work well all of them, and the rest of the back channels work well as well.
I attach the current for the +15 and -15 volt applied to the PreAmp (low voltage) and the leakage current from the detector is 0.1 uA. |
| Attachment 1: Experimental_Setup_Ca41.pdf
|
|
| Attachment 2: Current_Value_Voltage_-15.jpeg
|
|
| Attachment 3: Current_Value_Voltage_15.jpeg
|
|
| Attachment 4: Leakage_Current_Detector.jpeg
|
|
|
62
|
Mon Aug 14 11:00:13 2023 |
TD | RAL108 +/-15V PSU test in ISOLDE hall |
This morning 2x RAL108 +/-15V PSUs were borrowed from the Edinburgh equipment in the ISOLDE hall to check whether the same transient noise is observed at the +/-15V PSU
outputs - this was confirmed. See https://elog.ph.ed.ac.uk/nToF/63
Following this test the same 2x RAL108 +/-15V PSUs were tested in the ISOLDE hall ( 19" rack adjacent to the HIE-ISOLDE GP scattering chamber ).
PSU #1 Coutant HSC15-3.0
Setup and PSU details - attachments 1-4
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 5mV/div x: 400ns, 4us & 40us/div - attachments 5-7
PSU #2 Farnell MX2
Setup and PSU details - attachments 8-10
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 5mV/div x: 400ns, 4us & 40us/div - attachments 11-13
Conclusion
The noise of the 2x RAL108 +/-15V PSUs differed somewhat ( frequency and structure of HF transients ) from each other in the ISOLDE test.
Compared to the EAR2, n_TOF test the amplitudes were c. 10x smaller and the HF transient frequency and structure differed.
This appears to confirm that the primary problem is the ac mains power in EAR2, n_TOF - input and/or output filtering is required. |
| Attachment 1: 20230814_110402.jpg
|
|
| Attachment 2: 20230814_111029.jpg
|
|
| Attachment 3: 20230814_111128.jpg
|
|
| Attachment 4: 20230814_111216.jpg
|
|
| Attachment 5: 20230814_110410.jpg
|
|
| Attachment 6: 20230814_110424.jpg
|
|
| Attachment 7: 20230814_110516.jpg
|
|
| Attachment 8: 20230814_110053.jpg
|
|
| Attachment 9: 20230814_110723.jpg
|
|
| Attachment 10: 20230814_110738.jpg
|
|
| Attachment 11: 20230814_110158.jpg
|
|
| Attachment 12: 20230814_110142.jpg
|
|
| Attachment 13: 20230814_110105.jpg
|
|
|
63
|
Tue Aug 15 10:17:39 2023 |
TD, NS | RAL108 +/-15V PSU test at EAR2, n_TOF Monday 14 August |
On the morning of Monday 14 August 2x RAL108 +/-15V PSUs were borrowed from the Edinburgh equipment in the ISOLDE hall to check whether the same transient
noise is observed at the +/-15V PSU outputs.
PSU #2 Farnell MX2
Setup - attachment 1
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 50mV/div x: 1us, 500ns, 250ns & 25us/div - attachments 2-5
PSU #1 Coutant HSC15-3.0
Setup - attachment 6
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 50mV/div x: 25us/div - attachment 7
Conclusion
Observe same amplitude and HF structure with all 3x RAL108 +/-15V PSUs |
| Attachment 1: 20230814_083448.jpg
|
|
| Attachment 2: 20230814_083549.jpg
|
|
| Attachment 3: 20230814_083556.jpg
|
|
| Attachment 4: 20230814_083601.jpg
|
|
| Attachment 5: 20230814_083445.jpg
|
|
| Attachment 6: 20230814_083323.jpg
|
|
| Attachment 7: 20230814_083319.jpg
|
|
|
67
|
Mon Aug 21 12:08:59 2023 |
TD | RAL108 +/-15V PSU test - JCMB 21.8.23 |
PSU Calex
Setup, PSU and ac mains filter - attachments 1-3
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 50mV/div x: 100ns, 200ns, 1us, 2us, 10us/div
Without ac mains filter - attachments 4-8
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 10mV/div x: 100ns, 200ns, 1us, 2us, 10us/div
With ac mains filter - attachments 9-13
Conclusion - Claud Lyons Ltd STF Series Surge & Transient Power Filter produces c. x 2 attenuation of HF noise transients |
| Attachment 1: 20230821_115139.jpg
|
|
| Attachment 2: 20230821_115314.jpg
|
|
| Attachment 3: 20230821_115259.jpg
|
|
| Attachment 4: 20230821_115144.jpg
|
|
| Attachment 5: 20230821_115156.jpg
|
|
| Attachment 6: 20230821_115206.jpg
|
|
| Attachment 7: 20230821_115216.jpg
|
|
| Attachment 8: 20230821_115229.jpg
|
|
| Attachment 9: 20230821_115415.jpg
|
|
| Attachment 10: 20230821_115424.jpg
|
|
| Attachment 11: 20230821_115438.jpg
|
|
| Attachment 12: 20230821_115447.jpg
|
|
| Attachment 13: 20230821_115457.jpg
|
|
|
66
|
Sat Aug 19 14:14:26 2023 |
TD | RAL108 +/-15V PSU test - JCMB 18.8.23 |
PSU Calex
Setup and PSU details - attachments 1-3
DSO ch#1 +15V AC/1M, ch#2 -15V AC/1M - y: 20mV/div x: 100ns, 200ns, 1us, 2us, 10us, 20us & 100us/div - attachments 4-10 |
| Attachment 1: 20230818_115256.jpg
|
|
| Attachment 2: 20230818_120358.jpg
|
|
| Attachment 3: 20230818_120127.jpg
|
|
| Attachment 4: 20230818_115311.jpg
|
|
| Attachment 5: 20230818_115329.jpg
|
|
| Attachment 6: 20230818_115250.jpg
|
|
| Attachment 7: 20230818_115421.jpg
|
|
| Attachment 8: 20230818_115341.jpg
|
|
| Attachment 9: 20230818_115409.jpg
|
|
| Attachment 10: 20230818_115352.jpg
|
|
|
54
|
Fri Aug 11 09:11:04 2023 |
Annie | Pulse Settings |
|
| Attachment 1: IMG_2908.JPG
|
|
| Attachment 2: IMG_2909.JPG
|
|
| Attachment 3: IMG_2910.JPG
|
|
| Attachment 4: IMG_2911.JPG
|
|
|
57
|
Fri Aug 11 10:12:02 2023 |
Annie | Pressure, voltage and current check |
|
| Attachment 1: IMG_2915.JPG
|
|
| Attachment 2: IMG_2916.JPG
|
|
| Attachment 3: IMG_2918.JPG
|
|
|
94
|
Fri Jul 18 12:04:36 2025 |
CLW | Presence at CERN |
Excel sheet for presence at CERN during 41Ca run. Please update if required.
https://docs.google.com/spreadsheets/d/19OzH7bpnHb-YeOskNBGlrhEkPZmDsPDw9y0tleU0Soo/edit?gid=0#gid=0 |