1. The DEED amplitudes of Li2 run when the sample was not rotated.

2.  The DEED amplitudes of Li2 run when the sample was rotated. There are two clear peaks which indicate triton and alpha.

3. The EDET amplitudes of Li2 run when the sample was not rotated.

4. The EDET amplitudes of Li2 run when the sample was rotated.

Two different runs of B2 and the DEED-EDET amplitudes.

This is the Excel sheet where the proton numbers and the runs are kept track of.

This is the energy deposited vs neutron energy plot of all ~220 runs of K40 and a few resonances can be seen.

1. LiF 2 strip comparison. This includes 12 runs.

2. LiF 3 strip comparison. This includes 4 runs.

3. K40 strip comparison. This shows 213 runs which have been grouped into 3 equally.

During the intervention on Sunday there were some problems related to the detectors and the Dummy sample.

When we opened the chamber we realised that the detectors were not in place. It happened at the beggining of the experimental campaign while we were changing one of the references samples. As far as Emmanuel and I remenbered, the detectors were well fixed in the support, and we guess that the detectors moved as soon as we tried to open the chamber.

On the other hand, the dummy sample broke during the intervention. I attach a photo of the dummy sample.

About the 40K sample, it is in the vacuum box in good conditions.

October 22th. It's planned to remove the dummy sample on beam. We are planning to measured 4 references samples during the next two days.

- 6LiF #2. The 6LiF is deposited in the backing side. The measurement will be performed by using Al filter, Co - Mo- W and no filters.

- 6LiF #3. The 6LiF is deposited in the backing side. The measurement will be performed by using Al filter, Co - Mo- W and no filters.

-10B #3. The 10B is deposited in the frame side. The measurment will be performed without filters.

-10B #2. The 10B is deposited in the backing side. The measurment will be performed without filters.

For the moment 6 reference samples have been measured.

- 2 x 6LiF. The 6LiF is deposited in the backing side for both samples, #2 and #3. (Backing means the side from where the mylar has been glued)

- 4 x 10B. For the samples #1 and #2 the 10B is deposited in the frame facing the detector, and the samples #3 and #4 the 10B is deposited in the backing side.

During the last days, the two 6LiF samples will be measured, and the samples #2 and #3 samples with 10B.

I want to update about the DSSSD analysis and the processing routine. First, I attach a few screenshots of how the average signals work. Still, it can be improved looking at the average signal close to the gamma flash or optimizing the PSA parameters.

On the other hand, the data processing is already working. I attacha document where I explain the steps that must be follow and changes needed to make it work.

In the scheenshot attached, the LiF sample is the same but the number of signals are different and the amplitude. The LiF is the #2.

Therefore, according to the Emmanuel's plots, we were putting the LiF sample away from the detectors.

The runNumber 219135 corresponds to the LiF sample forward to the detector, and the runNumber 219167 corresponds to the LiF sample away from the detector.

edit: added screenshot of strip 5 amplitude spectrum from run 219167 where triton and alpha peaks are well separated.

Wiith the adjustments:

voltage and leakage current in dE are 7 V and 0.03 µA,  respectvely. (W1-20, 3186-9, 20 um)

voltage and leakage current in E are 47 V and 0.04 µA,  respectvely. (W1-150 3458-4, 144 um)

A logbook is attached to record what happened in the first weekend of the campaign, so as to keep track of the changes we made, before the 40K sample gets in. It will be updated tomorrow 15th Sept., 2024.

Spectra after adjustments of the MWD and UserInput:

10B - Sample 1, 10B - Sample 2, LiF - Sample 2 and LIF - Sample 3.

We haven't seen the triton peak in any of the LIF - just noise and alpha.

The 10B alpha is also seen.

Things to organise for the future:

- plastic detecor mounts to electrically isolate detectors

- storage boxes

Screenshots of pulser signal  in DEED - 1-4 and EDET 1-4

Pulser settings:

- positive

- 0.5 V

- 20 Hz

B10 and LiF samples have arrived at CERN.

There are 4 LiF sample, 4 Boron sample and one blank sample. All samples are attached to a square and are in good condition.

This is a new elog tab dedicated to the 40K(n,p) and (n,alpha) experiment. Things to be prepared before the run (start of run TBD):

- new almunised Kapton windows for chamber (Peter has ordered material)

- Lemo - BNC converters (most availanble, 10 new ones in my office)

- 10B and LiF reference samples: being prepared by P. Morrall in Daresbury

- 40K samples: one 40K (16% enriched) prepared by PSI, one highly enriched 40K sample will be produced by implantation at iThemba labs. Implantation will commence around May for about 6 weeks.

- new Kapton windows for chamber (underway, waiting for workshop)

- LiF and B samples from Daresbury: under production, will be shipped directly to CERN

- shorter flat cable: will try again to make a proper flat cable that is shorter. check with Tom

A how to from last year, still relevant for this measurement (only the vacuum valve may have moved depending on the pump.