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:

234Th: 63.29 and 92.59 keV
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: 277.371, 583.19, 860.557 and 2614.53 keV,

228Ac: 209.253, 338.320, 463,004, 911.21, 964.766 and 968.971 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

Background runs for the Lively Detector

If a measurement in the signal region is below the sideband regions then the 90% confidence limit is calculated.

Sample Description

Manufacturer

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

Background 1

171.327

Mar 29, 2019

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Completely Empty Detector

Jan 20, 2020

(mBq)

1.201

0.053

2.58

0.40

0.110

0.015

1.074

0.058

4.97

0.45

0.024

0.021

0.118

0.018

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

289.25

31.53

<0.26

0.024

0.021

1.305

0.099

<2629.00

Background 2

55.461

200324
200430

Mar 24, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Completely Empty Detector

May 19, 2020

(mBq)

1.243

0.083

3.02

0.86

0.161

0.029

1.38

0.10

8.35

0.94

<0.043

0.111

0.031

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

554.52

80.36

0.74

0.30

0.020

0.035

2.22

0.18

<4463.00

Combined Background

Combined Backgrounds of runs CW1

171.327

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

(mBq)

1.201

0.053

2.58

0.40

0.110

0.015

1.074

0.058

4.97

0.45

0.024

0.021

0.118

0.018

Completely Empty Detector

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq)

289.25

31.53

<0.26

0.024

0.021

1.305

0.099

<2629.00

Completed Sample Measurements for the Lively Detector

SBC Measurements:

Sample Description

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

SBC L01

Wire is Kapton Insulated, 32 AWG, 50 Ohm Coaxial cable

19.6 g

13.735

200922

Sep 22, 2020

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Silver Plated Copper Wire

Cable is 15 ft long

Oct 6, 2020

(mBq/kg)

<2.87

319.70

310.50

<6.25

<15.42

<101.30

<8.50

<6.49

Part No: 112129
Accu-Glass Products Inc. Valencia, CA

(ppm / ppb / ppt)

<0.23 ppb

25.9 ppb

25.15 ppb

<11 ppb

<3.79 ppb

<3.27 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

57Co:

(mBq/kg)

<36930.00

<57.82

<4.99

21.91

24.69

4.59

10.39

(ppm / ppb / ppt)

<2.99 ppm

5.39 ppb

6.07 ppb

SBC L02

Machined bits from SBC inner castle

686.6 g

13.673

220211

Feb 11, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

High Density Polyethylene

Feb 25, 2022

(mBq/kg)

15.63

0.94

13.04

12.12

<0.26

2.85

0.66

13.06

4.97

<0.34

0.55

0.23

(ppm / ppb / ppt)

1.27 ppb

0.08 ppb

1.06 ppb

0.98 ppb

<0.46 ppb

0.7 ppb

0.16 ppb

421.77 ppb

160.53 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<860.70

3.20

2.39

<0.35

2.50

0.98

(ppm / ppb / ppt)

<69.72 ppb

0.62 ppb

0.24 ppb

SBC L03

Copper pieces from the Inner Assembly

1207.3 g

13.784

220225

Feb 25, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Copper

Mar 11, 2022

(mBq/kg)

<0.090

<9.56

<0.25

<0.56

4.79

2.37

<0.15

<0.22

(ppm / ppb / ppt)

<7.29 ppt

<774.36 ppt

<0.44 ppb

<137.76 ppt

154.8 ppb

76.62 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

57Co:

58Co:

(mBq/kg)

<440.50

1.02

1.26

0.23

0.14

0.70

0.57

0.179

0.219

0.74

0.19

(ppm / ppb / ppt)

<35.68 ppb

0.17 ppb

0.14 ppb

SBC L04

10.7 g

9.916

220404

Apr 4, 2022

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Cirlex, Circuit Board Material

Apr 14, 2022

(mBq/kg)

<7.47

<339.20

5.17

6.35

<42.74

25.16

165.30

18.32

9.02

4.74

8.13

(ppm / ppb / ppt)

<0.61 ppb

<27.48 ppb

9.09 ppb

11.18 ppb

<10.51 ppb

0.81 ppm

5.34 ppm

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

<19240.00

61.89

81.03

<12.48

37.96

32.41

(ppm / ppb / ppt)

<1.56 ppm

9.34 ppb

7.97 ppb

SBC L05

Low-Grade Unistrut

757.7 g

7.340

230719

Jul 19, 2023

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

Unistrut

3 pieces

Jul 27, 2023

(mBq/kg)

<0.82

49.08

20.68

0.60

0.29

<0.90

7.35

5.23

<0.43

<0.28

(ppm / ppb / ppt)

<66.42 ppt

3.98 ppb

1.68 ppb

1.06 ppb

0.5 ppb

<0.22 ppb

237.42 ppb

168.96 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

(mBq/kg)

6681.50

4405.00

<4.47

5.86

0.81

<1.35

(ppm / ppb / ppt)

541.2 ppb

356.81 ppb

<0.33 ppb

SBC L06

1511.7 g

6.930

240202

Feb 2, 2024

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

1A Copper SIPM Petals

6 Pieces

Feb 9, 2024

(mBq/kg)

<0.15

30.31

15.16

<0.22

<0.55

<6.06

<0.14

<0.12

(ppm / ppb / ppt)

<12.15 ppt

<0.03 ppb

<0.39 ppb

<135.3 ppt

<195.74 ppb

Results:

210Pb:

7Be:

54Mn

228Ac:

57Co:

58Co:

(mBq/kg)

5732.10

3936.00

<1.93

<0.26

<1.03

<1.33

0.73

0.23

(ppm / ppb / ppt)

464.3 ppb

318.82 ppb

<253.38 ppt

In Progress Sample Measurements for the Lively Detector

Runs in Progress:

Sample Description

Mass (g)

Live Time (days)

Run Numbers

Counting Dates
(if applicable)

Next Sample

Results:

238U from 226Ra

238U from 234Th

235U

232Th

40K

137Cs

60Co

Comments

(mBq/kg)

(ppm / ppb / ppt)

Results:

210Pb:

7Be:

54Mn

228Ac:

210Po:

(mBq/kg)

(ppm / ppb / ppt)