HOME ESR EXPERIMENTS LABS etc
E121 E127 E132 E125 E143 laser_cooling_2021 E142 Ê128 E146 E0052 E0018
  nuclear two-photon decay, Page 9 of 12  Not logged in ELOG logo
ID Date Authorup Category Subject
  78   Sat May 8 18:35:25 2021 Rui-Jiu ChenDAQChange reference level to -10dBm
The beam in ESR is 78Kr36+@476 MeV/u.
Start a new run:
SC_2021-05-08_18-25-52
IQ_2021-05-08_18-25-52
  112   Sun May 9 20:34:47 2021 Rui-Jiu ChenAnalysisComparison of frequency spectrum between 72Ge and other isotope
This some preliminary analysis results by using  NTCAP data.   The IQ rate of NTCAP is 20 MSamples/seconds. I analyzed data files recorded from May 7 
17:39 to May 8 2:20.  The frequency of 72Ge is bended by 4kHz at the beginning of some injections.  In order to check whether this frequency bending is 
due to isomer or unstable magnetic field. I compare the 72Ge with other isotopes. The similar bending was observed for other isotope in each 
corresponding injections. It seems that bend is due to unstable magnetic field.  
  119   Sun May 9 23:59:26 2021 Rui-Jiu ChenDAQStart a new run.
Start a new run. The data of new run is in :
reference level = -50dBm.
SC_2021-05-09_23-43-37
IQ_2021-05-09_23-43-37
  121   Mon May 10 00:08:26 2021 Rui-Jiu ChenDAQChange reference level to -60dBm
Start a new run. The data of new run is in :
SC_2021-05-10_00-08-08
IQ_2021-05-10_00-08-08
  139   Tue Jun 29 20:40:55 2021 Rui-Jiu ChenDAQstart NTCAP
Carrier Frequency:245MHz.
IQ rate 20MSamples/s
Reference level:-90 dBm
SC_2021-06-29_20-38-27
IQ_2021-06-29_20-38-27
  143   Wed Jun 30 00:12:55 2021 Rui-Jiu ChenAnalysisthe ID of 72Ge setting
  144   Wed Jun 30 00:20:10 2021 Rui-Jiu ChenAnalysisID of 70Se setting on May
This is an old spectrum which was recoded on May.
  149   Wed Jun 30 12:26:58 2021 Rui-Jiu ChenAnalysisNTCAP start.
SC_2021-06-30_11-00-12
IQ_2021-06-30_11-00-12
reference level -80dBm.
Amplifier is off.
  150   Wed Jun 30 12:35:53 2021 Rui-Jiu ChenAnalysisChange reference level to -20dBm. Turn of amplifier.
SC_2021-06-30_12_35_52
IQ_2021-06-30_12_35_43
Reference level=-20dBm
  152   Wed Jun 30 13:05:08 2021 Rui-Jiu ChenAnalysisID of 70Se
This is the latest ID of 70Se setting.
  157   Wed Jun 30 19:08:25 2021 Rui-Jiu ChenAnalysisID of 70Se spectrum recorded in May
  162   Wed Jun 30 23:29:42 2021 Rui-Jiu ChenAnalysisStart a new run.
reference level=-20 dBm.
p:\E143\sc\SC_2021-6-30_23_27_45
p:\E143\iq\IQ_2021-6-30_23_27_34
  168   Thu Jul 1 15:25:42 2021 Rui-Jiu ChenDAQtemplate of NTCAP shift
Please check following two parameters every two hours into make sure the NTCAP is running well: 
1. The latest recorded tdms files:
 p:\E143\sc\**\**
 p:\E143\iq\**\**
2. The rest space on the drive "p:\" : **GByte.
  136   Mon Jun 28 18:32:49 2021 Ruijiu, ShahabDAQtrigger signal connected to NTCAP and analyzers
  137   Tue Jun 29 10:32:10 2021 Sergey, HelmutAcceleratorcooler curves for tuning of isochronicity
Variation of quadrupole E01QS03D to change gamma_t in isoc. mode
measured with 78Kr at 368.5 MeV/u on 28.06.2021 evening.
The shape of the three curves looks very similar they would only require a different beam velocity.
But I suppose we stay with the value close to the old one (gamma_t ~ 1.3956).
  49   Fri May 7 16:17:21 2021 Sergey, Yuri, Wolfram, ShahabRunsnew sextupole setting
new sextupole setting, isomer not visible yet.
  211   Fri Jul 2 13:44:50 2021 Sergey, et alAcceleratorEl cooler
Up to now, attempts to cool the fat line between Se and Ar were conducted. We give up it now and remove cooling
  29   Fri May 7 03:51:56 2021 ShahabAnalysispeak frequencies
a reference schematic of the peaks on 410 MHz (211th harmonic) and 245 MHz (126th harmonic)
  30   Fri May 7 04:01:51 2021 ShahabRunsPicture after scraping
this picture is after scraping by helmut, showing the 410 MHz detector, that is we would expect an isomer where the marker M1 is, i.e. at 2.2kHz on the left side, which we unfortunately don’t see (yet).
  31   Fri May 7 04:26:54 2021 ShahabRuns245 MHz resonator extra 20dB gain off
made sure that the extra 20dB amplifier is off.
ELOG V3.1.5-fc6679b