Some Useful Information Concerning the results:
The Conversion factors for the primordial nuclides are given by: 1 Bq 238U/kg = 81 ppb U (81 x 10-9 gU/g) The 238U decay chain gammas used are: 226Ra: 186.1 keV
214Pb: 295.21 and 351.92 keV
214Bi: 609.31, 1120.29, 1764.49 and 2204.21 keV
The relationships are valid for any daughters in the 238U, 235U or 232Th chain only if the chain is in equilibrium. 1 Bq 232Th/kg = 246 ppb Th (246 x 10-9 gTh/g) The 232Th decay chain gammas used are: 212Pb: 238.63 and 300.09 keV
208Tl: 583.19 and 2614.53 keV,
228Ac: 911.21 keV
1 Bq 40K/kg = 32300 ppb K (32300 x 10-6 gK/g) The 40K decay chain gamma used is: 40K: 1460.83 keV
1 Bq 235U/kg = 1.76 ppm U (1.76 x 10-6 gU/g) The 235U decay chain gammas used are: 235U: 143.76, 163.33 and 205.31 keV
The measurements of the samples below take into account the background measurements. If a measurement is below the background then the upper bound shown is the 90% confidence limit.
CUTE Measurements:




























Sample Description Manufacturer Mass (g) Live Time (days) Run Numbers Counting Dates
(if applicable)






















CUTE G01 FEP Jacket with PTFE Dialetric and Copper Conductor 18.9 g 14.861 220531 May 31, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
SMA Coax Cable



Jun 15, 2022 (mBq/kg) 275.90 +- 18.91 <172.70

<6.76

18.33 +- 16.11 140.20 +- 92.13 4.46 +- 6.83 <6.48








(ppb or ppm) 22.35 ppb +- 1.53 ppb <13.99 ppb

<11.9 ppb

4.51 ppb +- 3.96 ppb 4.53 ppm +- 2.98 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) <5795.00

<135.30

2.97 +- 5.31 24.35 +- 23.48

















(ppb or ppm) <469.4 ppb







5.99 ppb +- 5.78 ppb











CUTE G02 8 Small Copper “L” shaped copper pieces 45.0 g 13.785 220517 May 17, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Copper Plates



May 31, 2022 (mBq/kg) 88.66 +- 10.30 <164.00

<10.62

17.82 +- 11.39 44.82 +- 51.93 <7.61

<1.27








(ppb or ppm) 7.18 ppb +- 0.83 ppb <13.28 ppb

<18.69 ppb

4.38 ppb +- 2.8 ppb 1.45 ppm +- 1.68 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) <11640.00

53.38 +- 55.74 <3.32

<15.52



















(ppb or ppm) <942.84 ppb







<3.82 ppb













CUTE G03
1.1 g 12.764 220615 Jun 15, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
M3 Brass Threaded Rod



Jun 28, 2022 (mBq/kg) <248.70

<1297.00

<99.45

342.00 +- 187.70 <1345.00

<81.93

<30.55








(ppb or ppm) <20.14 ppb

<105.06 ppb

<175.03 ppb

84.13 ppb +- 46.17 ppb <43.44 ppm
















Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) <13410.00

567.83 +- 919.10 <53.79

164.90 +- 254.30

















(ppb or ppm) <1.09 ppm







40.57 ppb +- 62.56 ppb











CUTE G04
243.3 g 6.722 220916 Sep 16, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
133Ba SRS-22-001-C Rinse Solution



Sep 23, 2022 (mBq/kg) 6.21 +- 2.98 <34.31

<8.16

<5.07

15.14 +- 13.21 <2.03

<0.37








(ppb or ppm) 0.5 ppb +- 0.24 ppb <2.78 ppb

<14.36 ppb

<1.25 ppb

489.02 ppb +- 426.68 ppb














Results: 210Pb:
7Be:

54Mn

228Ac:
133Ba:














(mBq/kg) <427.20

<11.57

<0.62

<7.17

7305.10 +- 368.20














(ppb or ppm) <34.6 ppb







<1.76 ppb













CUTE G05
259.5 g 20.791 220923 Sep 23, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
133Ba SRS-22-001-D Rinse Solution



Oct 14, 2022 (mBq/kg) 2.39 +- 1.57 <15.67

<1.35

3.86 +- 1.56 4.67 +- 7.56 <1.35

<0.27








(ppb or ppm) 0.19 ppb +- 0.13 ppb <1.27 ppb

<2.38 ppb

0.95 ppb +- 0.38 ppb 150.68 ppb +- 244.22 ppb














Results: 210Pb:
7Be:

54Mn

228Ac:
133Ba:














(mBq/kg) <168.50

<8.46

<0.52

<4.72

87.77 +- 5.18








CUTE G06 Rinse Test #2 255.9 g 9.917 221021 Oct 21, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
133Ba SRS-22-001-A Rinse Solution



Oct 31, 2022 (mBq/kg) 5.07 +- 1.74 <34.79

0.24 +- 0.91 <5.32

<25.14

<0.83

<0.56








(ppb or ppm) 0.41 ppb +- 0.14 ppb <2.82 ppb

0.43 ppb +- 1.6 ppb <1.31 ppb

<812.02 ppb
















Results: 210Pb:
7Be:

54Mn

228Ac:
133Ba:














(mBq/kg) <181.60

<12.72

<0.75

<6.00

<1.22
















(ppb or ppm) <14.71 ppb







<1.48 ppb













CUTE G07 Rinse Test #2 265.1 g 9.021 221031 Oct 31, 2022 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
133Ba SRS-22-001-C Rinse Solution



Nov 9, 2022 (mBq/kg) <2.91

<22.41

<0.92

<7.68

14.42 +- 10.98 <1.29

<0.57








(ppb or ppm) <0.24 ppb

<1.82 ppb

<1.62 ppb

<1.89 ppb

0.47 ppm +- 0.35 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
133Ba:














(mBq/kg) 143.10 +- 129.10 <21.22

<0.56

<6.67

<1.27
















(ppb or ppm) 11.59 ppb +- 10.46 ppb





<1.64 ppb













CUTE G08
12.3 g 8.028 240411 Apr 11, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
PCB & Connector



Apr 19, 2024 (mBq/kg) 374.50 +- 10.60 597.10 +- 47.33 21.50 +- 1.48 487.20 +- 15.81 667.36 +- 49.69 <3.10

<2.09








(ppb or ppm) 30.33 ppb +- 0.86 ppb 48.37 ppb +- 3.83 ppb 37.84 ppb +- 2.61 ppb 119.85 ppb +- 3.89 ppb 21.56 ppm +- 1.6 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) 278.88 +- 86.54 10.34 +- 17.02 3.01 +- 2.00 625.80 +- 20.16

















(ppb or ppm) 22.59 ppb +- 7.01 ppb





153.95 ppb +- 4.96 ppb











CUTE G09
13.9 g 5.743 240419 Apr 19, 2024 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Cable and Connectors



Apr 25, 2024 (mBq/kg) 1185.00 +- 67.76 6832.00 +- 671.50 181.50 +- 21.18 1011.00 +- 72.48 665.58 +- 274.30 <33.46

<7.77








(ppb or ppm) 95.99 ppb +- 5.49 ppb 553.39 ppb +- 54.39 ppb 319.44 ppb +- 37.28 ppb 248.71 ppb +- 17.83 ppb 21.5 ppm +- 8.86 ppm














Results: 210Pb:
7Be:

54Mn

228Ac:
















(mBq/kg) 7787.50 +- 1736.00 <309.60

23.93 +- 18.30 1250.00 +- 114.90

















(ppb or ppm) 630.79 ppb +- 140.62 ppb





307.5 ppb +- 28.27 ppb










































In Progress and To Be Measured:




























Sample Description Manufacturer Mass (g) Live Time (days) Run Numbers Counting Dates
(if applicable)






















CUTE G10 Material name: CP-EXP-1184 89.9 g 10.722 250114
250115
250116
250117		 Jan 14, 2025 Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments
Magnetic Shield Plate Ad-Vance Magnetics Inc



(mBq/kg) 32.80 +- 21.67 <211.80

<16.70

134.10 +- 22.49 <127.80

<13.14

7.29 +- 5.80






(ppb or ppm) 2.66 ppb +- 1.76 ppb <17.16 ppb

<29.39 ppb

32.99 ppb +- 5.53 ppb <4.13 ppm
















Results: 210Pb:
7Be:

54Mn

228Ac:
57Co
58Co:












(mBq/kg) <3722.00

<160.30

5.84 +- 7.62 <55.83

61.88 +- 22.32 21.919 +- 8.69











(ppb or ppm) <301.48 ppb







<13.73 ppb













Next Sample




Results:
238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co
Comments






(mBq/kg)



























(ppb or ppm)







.




















Results: 210Pb:
7Be:

54Mn:

228Ac:
210Po:














(mBq)





























(ppb or ppm)