AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40
  nToF, Page 4 of 5  ELOG logo
ID Date Author Subjectdown
  16   Sun Jul 31 15:56:32 2016 SarahDEED16 Alpha calibration checks (205169)

***note that DEED 16 was on old sampling rate for 205168- so use next run, also DEED 9-12 not plugged in***


  DEED16: (1 bin = 2 ch)

Pulser (DAQ):
- Centroid = 5347(3) ch
- FWHM = 89(7) ch = 1.7%
 

Pulser (Maestro):
- Centroid = 4279 ch
- FWHM = 166 ch = 3.9%

 

*** take the following with a pinch of salt- low stats (top of peak in DAQ = 4 counts)

148Gd (DAQ):
- Centroid = 1948 ch
- FWHM = 138 ch = 7%

 

148Gd (Maestro):
- Centroid = 1586 ch
- FWHM = 11 ch = 0.7%

  14   Sun Jul 31 14:32:34 2016 SarahDEED1 Alpha calibration checks (205168)

 DEED1: (rebin x2 -> 1 bin = 4 ch)

Pulser (DAQ):
- Centroid = 5000(1) ch
- FWHM = 71(5) ch = 1.4%
 

Pulser (Maestro):
- Centroid = 4008 ch
- FWHM = 148 ch = 4%
 

148Gd (DAQ):
- Centroid = 1880(1) ch
- FWHM = 89(2) ch = 4.7%

 

148Gd (Maestro):
- Centroid = 1524 ch
- FWHM = 67 ch = 4.4%

 

 

  31   Thu Oct 6 11:07:47 2022 Nikolay SosninChange of sample/Addition of pulser

Changed from LiF 4 to LiF 3 after running with LiF 4 overnight (run title on n_TOF DAQ was not updated to refelect the change, and still says LiF 4, but the material setting of the run states correctly that hte run is with LiF 3).

Added pulser triggered from protons. 12 microsecond delay from protons to gamma-flash + 1.75 microsecond delay from gamma flash to pulser. 20 mV pulser output into 50 ohm impedance (10 mV final output) of both polarities (using two pulsers, one NE pulser and one BNC PB5 pulser). Planning torun with 1.75 microsecond delay for approx. 1 hour, change to 5 microsecond delay.

  35   Fri Oct 7 20:04:30 2022 Nikolay SosninChange of Pulser Setting

The pulser has been switched from triggering from beam trigger to running at a 10 Hz rate, and will now appear in random places in signal traces. Planned to run overnight measuring LiF3, switch to empty + detector in beam in the morning.

  33   Thu Oct 6 14:58:29 2022 Nikolay SosninChange of Pulser Delay

Still using pulser triggered from protons. 12 microsecond delay from protons to gamma-flash + 1.75 microsecond delay from gamma flash to pulser. 20 mV pulser output into 50 ohm impedance (10 mV final output) of both polarities (using two pulsers, one NE pulser and one BNC PB5 pulser). Changed pulser setting to run with 5 microsecond delay for approx. 1 hour, then change to 10 microsecond delay.

  34   Fri Oct 7 17:17:08 2022 Nikolay SosninChange of Pulser Delay

Still using pulser triggered from protons. 12 microsecond delay from protons to gamma-flash + 11 microsecond delay from gamma flash to pulser. 20 mV pulser output into 50 ohm impedance (10 mV final output) of both polarities (using two pulsers, one NE pulser and one BNC PB5 pulser). Changed pulser setting to run with 11 microsecond delay for approx. 2 hour, then change to an overnight run with pulser running NOT triggered from beam.

  37   Sat Oct 8 11:57:36 2022 Nikolay SosninChange of Detector-Target Separation

Increased detector-target (LiF 3) separation by 1.5 cm. Had to replace the support strut under the detectors due to the previous one being fuly retracted even for minimal target-detector separation. This change may affect detector rotation relative to the target.

  41   Mon Jul 3 13:01:30 2023 EmmanuelBoxes for nTOF experiments to CERN

Box 1

1. RC412 Cables

2. Screws and parts for rails

3. Small rails

 

Box 2

1. Vacuum valves

2. IDC cables

 

Box 3 (Detectors)

1. WI-20

3186-9

2. WI-150

3458-4

3. WI-150

3458-1

 

 

Box 4 (Detector)

1. WI-20

3485-12

*List

 

**We also have the tube for the long rails

 

  92   Wed Jul 16 11:45:39 2025 SelinBoron Spectra Update After Setting Change + Pulser Removed

Uncalibrated amplitude spectra of Boron (run221188) after the settings were changed, the pulser was removed, and the threshold in the UserInput has been lowered. Both alphas can be seen in the front and back strips. The ratios between the alphas are similar for front (0.066) and back (0.063) strips.

1- Uncalibrated amplitude spectra of strip 2.

2- 1- Uncalibrated amplitude spectra of strip 19.

  40   Sun Oct 9 21:07:02 2022 Nikolay SosninBoron Sample 3 Measurement

21:15 Changed from detectors in-beam to boron-10 sample 3 in-beam (in-beam measurement got 1000 triggers, 500 of which were dedicated). The sample was mounted identically to LiF 3. An attempt was made to replace the 20-micron dE detector with a 50-micron one, but the screwholes on the 50-micron detector did not match the 300-micron E-detector ones and therefore could not be mounted. 20-micron detector was therefore re-attached. Planning to run for 12 hours with boron than dismount.

  82   Tue Mar 18 13:28:30 2025 EmmanuelB10 and LiF data with Fast Fourier Transform

Attached is the B10 and LiF data with Fast Fourier Transform and varying time constants.

  32   Thu Oct 6 11:45:39 2022 Nikolay SosninAssembly Setup Days 1 and 2

Photographs of assembly up to the first pulser test with LiF3.

  13   Sun Jul 31 13:43:56 2016 SarahAlpha spectra

 Pulser set to 100 pps.

Shaping amp:
Gain: 1x1.0x50
Tau: 2 us
Negative polarity.


 

  50   Thu Aug 10 10:50:15 2023 Nikolay SosninAl26 Chamber Cabling/Vacuum/NIM
  42   Thu Jul 27 11:25:35 2023 ClaudiaAl-26 planning meeting summary
  • Start 9th August, access to EAR-2 11 am earliest but can start in rack area before
  • Setup to be used: 1 dE (16 strips, 20 um thickness) + 1 E (16x16 strips, 150 um thickness. We have a spare for each thickness
  • Sample and detectors to be mounted on the same flange

Things to check:

  • alignment with beam centre (lasers and/or gafchromics foils)
  • is the setup stable to knockes, can all detector / sample positions be well reproduced when making changes

Once setup us completed:

  • checks with pulser
  • mounf LiF sample number 3 and run with neutron beam
  • check that all strips have signals
  • confirm shape of gamma flash and that short times can be anaysed in both detectors (~1.8 us after flash)

If everything working:

  • measure LiF-3 and the switch to Al-26
  • towards end of the run we can also measure B-3 and the empty brass frame (Frame without mylar)
  • proton statistics: 1E17 LiF-3, 1F17 B-3, ~3E17 Empty, 5.5 E18 Al-26

Travel times

Nick: 8-16, Annie 8-12, Tom, 7 -?, Claudia, 8-10, Emmanuel asap until end of run

Measurement runs until Octover 2nd. Disassembly by Nick and Emmanuel.

additional trips during the measurement as required (if something breaks/fails etc. )

 

Attached: photos of previous setup

 

TO Do: MCA availability at nTOF for quick noise checks (Nick)

            how many  channels in 14 bit, how many 12 bit (Nick)

          depletion voltages   for detectors (Tom)

          Register the eqipment at CERN as Edinburgh property (Claudia)

 

 

  53   Fri Aug 11 08:41:31 2023 AnnieAl target & chamber set up

Phtotos of the front & back of the Al target and what it looked like once mounted and in the chamber.

  73   Mon Mar 25 12:57:30 2024 ClwAdapters for ntof setup

10 new Adapters for lemo to bnc on my desk

  76   Thu Sep 12 11:07:29 2024 Nick40K Borrowed Items

We borrowed from n_TOF:

1x O-ring for circular side-flanges on the chamber (the borrowed part has a small green marker cross on it)

10x LIMO-to-BNC connectors (BNC female) from electronics lab outside EAR1

  80   Mon Sep 16 12:36:45 2024 TD34-way IDC to 37-way D connector ribbon cables
The 2x sets of 34-way IDC to 37-way D connctor ribbon cables used at GSI for the two-alpha decay measurement have been located - see attachments 1-4.

They have been packed for shipment to CERN and delivered to stores for shipment. Awaiting quotation and P&M PO.
  61   Sat Aug 12 09:24:19 2023 Nikolay Sosnin26Al Protons

Here is a Google spreadsheet for counting protons for the runs:

https://docs.google.com/spreadsheets/d/1INX8G9GAu-M70SdZdz55qXnMZNXKXLW7xfFH-eaLuQw/edit?usp=sharing

ELOG V3.1.4-unknown