ANL Tape Station Commissioning

7/25/2019 ANL Tape Station Commissioning

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CARIBU System Results Conclusion Extras

First Commissioning Results with the TapeStation at CARIBU

Peter F. Bertone

Physics Division

Argonne National Laboratory

Heavy Ion Discussion15 June 2012

CARIBU Tape Station


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Outline

Very Brief Overview of CARIBU

Tape Transport System

Results from Commissioning Runs

Summary and Conclusions

CARIBU Tape Station


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CARIBU Tape Station


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CARIBU Facility

Platform

Gas Cell

Figures: G. Savard, M. Sternberg

CARIBU Tape Station


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Beam Switch Yard and Tape Station

CARIBU Tape Station

CARIBU S t R lt C l i E t


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Beam Switch YardSpherical Deflector

Photo: J. Van Schelt

CARIBU Tape Station

CARIBU S t R lt C l i E t


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Beam Switch YardKicker

Photo: J. Van Schelt

CARIBU Tape Station



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CARIBU Science

Figure: G. Savard

CARIBU Tape Station



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CARIBU Science(No particular order)

Stopped Beam

Penning trap massmeasurements.

Trap-based studies of

-delayed neutronemission.

spectroscopy withX-Array.

Total absorption -rayspectroscopy (TAGS).

Half-life measurements.

Laser spectroscopy.

Re-Accelerated Beam

Neutron-addingreactions in 132Sn regionusing HELIOS.

Two nucleon-adding/removingreactions in neutron-richAZr region withHELIOS.

Coulex usingGammasphere.

Decay spectroscopy andcalorimetry withGammasphere.

CARIBU Tape Station



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The Purpose of a Tape Station

... is to transport implanted radioactivity to/from detectors. Implant-count-move cycle.

Detect activity in same location as implantation. Move activity to shielded location after set counting time. Avoid background from accumulation of longer-lived

daughter nuclei. e.g. studying shorter-lived nuclei.

Implant-move-count cycle.

Move activity to shielded detector location away from

implantation area. e.g. studying longer-lived nuclei. e.g. hostile implantation environment for detectors.

CARIBU Tape Station



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Possible Uses of a Tape Station

Diagnostics of CARIBU beams based on multiscaling.

Stopped beam experiments. Beam injected into ATLAS.

spectroscopy with X-Array. Half-life measurements.

Total Absorption Spectroscopy.

Transport of activity out/into Gammasphere or FMA focal

plane. And more ...

CARIBU Tape Station



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y

Tape Station Main Components

Implant/detection chamber.

Two apertures defining an implant point on tape. Plastic scintillator detector, light guide, PMT. One or two HPGe -ray detectors.

Tape drive/storage system.

Motor + various belts, gears, sprockets, pulleys. Tape + storage cartridge. Vacuum system.

Control system.

Programmable logic controller (PLC). Programmable motor controller. HV switch for beam kicker.

Data acquisition and electronics.

CARIBU Tape Station



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y

Design Concept

Modularity.

Tape storage/transport components detachable from

experiment-specific components. Portable - could, in principle, be moved to GS or FMA. Flexible - could change to implant-move-count cycle if

needed.

CARIBU Tape Station



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Implant/Detection Chamber

Simplified schematic:

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 0

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 1

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 0

0 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 0

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 1

1 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 1

00000000000000001111111111111111

HPGe Detector

Pulleys

Plastic Beta Detectors

Apertures

Mylar Tape

Aluminumcoated

HPGe Detector

To Tape Storage

Beam

Some specifics:

D 1 mm (70% 4).

D 2.5 cm.

30% HPGe detectors.

Apertures: 5.1 mm,6.8 mm, 6 in apart.

35 mm motion picturetape.

Aluminum coatedMylar (1000A).

CARIBU Tape Station



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Implant/Detection Chamber

CARIBU Tape Station



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Tape Drive/Storage System

CARIBU Tape Station



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Tape Drive/Storage System

CARIBU Tape Station



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Control System

000

000

000

111

111

111

Windows PCLaptop

Stepper Motor

20k step/inch

USB

toDB9

Controller

STAC6Si

LC880

Programmable

Logic

Controller DAQ

(Inhibit Input)

Fast HV

Switch

(Reset Input)

Latching Scaler

To Beam Kicker

HV Supply

MMI 8lead connectorDB9

USB

1

2

3

4

DB9

CAMAC

BNCx4

AMP25

CARIBU Tape Station



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Commissioning Goals

Demonstrate reliable operation of all system components

under typical experimental conditions. Demonstrate accurate measurement of some known

half-lives.

CARIBU Tape Station



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How to Measure a Half-LifeUndergrad Physics

Grow-in:(1 et)

Decay:et

CARIBU Tape Station



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How to Measure a Half-LifeControl System Setup & Multiscaling

000000000111111111

Windows PC

Laptop

Stepper Motor

20k step/inch

USB

to

DB9

Controller

STAC6Si

LC880

Programmable

Logic

Controller DAQ

(Inhibit Input)

Fast HV

Switch

(Reset Input)

Latching Scaler

To Beam Kicker

HV Supply

MMI 8lead connectorDB9

USB

1

2

3

4

DB9

CAMAC

BNCx4

AMP25

CARIBU Tape Station



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Commissioning RunsOverview

Run #1 - 142Cs Beam.

3 hrs with 1-2 kHz beam rate. , counting in singles.

Run #2 - 142Cs Beam. 6.25 hrs with 1 kHz beam rate. coincidence counting (TAC).


1.25 hrs with 200 Hz beam rate. coincidence counting (TAC).

CARIBU Tape Station



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Commissioning RunsOverview (continued)


Beam rate weak, 10 Hz.

Problems with CARIBU - NO DATA. Run #5 - High speed endurance test (no beam).

Advance tape 5x more often, 2x speed. Mimics conditions for measuring 300 ms T1/2. See how long before something breaks.

CARIBU Tape Station



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Run #2 - 142Cs Beam

Raw multiscaled data:

Time (sec)0 5 10 15 20 25

(keV)

E

0

500

1000

1500

2000

2500

3000

Cs Beam142Run #2 - Cs Beam142Run #2 -

-gated -ray spectrum:

(keV)E0 200 400 600 800 1000 1200 1400

Counts/keV

0

1000

2000

3000

4000

5000


CARIBU Tape Station



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-rays Used in 142Cs Half-Life Determination

Ge1GM

Entries310508

Mean 438.6

RMS 355.9

(keV)E200 400 600 800 1000 1200 1400

Counts/k

eV

0

1000

2000

3000

4000

5000

Ge1GM

Entries310508

Mean 438.6

RMS 355.9Run #2

Ba142Cs142

359 keV27%

967 keV9.0%

1326 keV13%

1176 keV4%

Cs Beam142

142Cs -decay: Scott et al J. Phys. G: 6 1291 (1980)

CARIBU Tape Station



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142Cs Half-Life Determination

Time (sec)0 5 10 15 20 25

(keV)

E

340

345

350

355

360

365

370

375

= 359 keV

Ba, Run #2, E142Cs142 = 359 keV

Ba, Run #2, E142Cs142

CARIBU Tape Station



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Time (sec)0 5 10 15 20 25

Counts/100

ms

0

50

100

150

200

250

300

350

400

= 1.68(2) sec1/2T

/n= 1.12

= 359 keV

Ba, Run #2, E142Cs142

Fit:

Background

Background

Tape

Move-DAQV

eto

Grow-in Decay

CARIBU Tape Station



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142Cs Half-Life DeterminationPreliminaryResults

200 400 600 800 1000 1200 1400

E(keV)

1.2

1.25

1.3

1.35

1.4

1.45

1.5

1.55

1.6

1.65

1.7

1.751.8

1.85

1.9

1.95

2

2.05

2.1

T1/2

(sec)

Weighted Ave = 1.68(2) sec

142Cs Present Data (+/- 1)

(2/n = 1.1)

(1.0) (0.6)(1.2)

CARIBU Tape Station


4


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142Cs Half-Life DeterminationComparison to Previous Measurements

1960 1970 1980 1990 2000 2010 2020Year

1.6

1.7

1.8

1.9

2

2.1

2.2

2.3

2.4

2.5

T1/2

(sec)

n,

PriorPresent

142Cs

1.684(14) [ENSDF]

1.68(2) [Present]n,

SFn

n,

?

,

?

CARIBU Tape Station


144


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Run #3 - 144Cs Beam

Raw multiscaled data:

Time (sec)0 2 4 6 8 10 12 14 16

(keV)

E

0

200

400

600

800

1000


-gated -ray spectrum:

(keV)E0 100 200 300 400 500 600 700 800

Counts/ke

V

0

50

100

150

200

250

300

350

Cs Beam144Run #3 -

Ba144Cs144

199 keV

144Cs -decay: Scott et al J. Phys. G: 6 1291 (1980)

CARIBU Tape Station


144


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Time (sec)0 2 4 6 8 10 12 14 16

(keV)

E

160

180

200

220

240

= 199 keV

Ba, Run #3, E144Cs144 = 199 keV

Ba, Run #3, E144Cs144

CARIBU Tape Station


144C lf f


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Time (sec)0 2 4 6 8 10 12 14 16

Counts/100

ms

0

10

20

30

40

50

= 0.99(5) sec1/2T

/n= 1.12

= 199 keV

Ba, Run #3, E144Cs144

Fit:

Background Background

Grow-in

Decay

TapeMove-DAQVeto

CARIBU Tape Station


144C H lf Lif D i i


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144Cs Half-Life DeterminationPreliminaryResults and Comparison

1960 1970 1980 1990 2000 2010Year

0.88

0.9

0.92

0.94

0.96

0.98

1

1.02

1.04

1.06

1.08

1.1

1.12

1.14

1.16

1.18

1.2

T1/2

(sec)

144Cs

0.99(5) [Present]

0.994(6) [ENSDF] n

n,

n,

(n)

n

n,

n

SF

n

PriorPresent

CARIBU Tape Station


R #5 Offli S d d E d T t


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Run #5 - Offline Speed and Endurance Test

In absence of short-lived beam, simulate experimentalconditions:

Set cycle appropriate for T1/2 300 ms measurement.

0.9 s background

0.9 s growth period (3T1/2) 1.8 s decay period (6T1/2) 0.5 s tape advance (2 m/s) 0.9 s background 5 s total cycle time (10% dead-time)

Voluntary termination after 16 hrs with no problems. Could have run longer/faster.

CARIBU Tape Station


S d C l i


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Summary and ConclusionsAccomplishments

We have successfully assembled, installed andcommissioned a tape station for CARIBU.

We have measured half-lives for 142

Cs and 144

Cs, achievingreasonable precision for 142Cs, and excellent agreement withadopted values in both cases.

We have demonstrated highly reliable operation of thesystem in a over a useful range of cycle times.

CARIBU Tape Station


S d C l i


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Summary and ConclusionsNext Steps

Attempt real physics measurements with current system.

Work toward vastly improved system utilizing X-Array.

Commission second deflector beamline. Design, build, commission another tape station for 16 mm

tape (faster). Design, build implant/detection chamber to house

detectors and bring tape into X-Array. X-Array development and move to CARIBU.

Decay spectroscopy with 500 mCi source.

CARIBU Tape Station


A k l dg ts


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AcknowledgmentsCollaborators

B. DiGiovine (ANL/PHY)C. J. Lister (UMass-Lowell)A. Y. Deo (UMass-Lowell)P. Chowdhury (UMass-Lowell)

J. A. Clark (ANL/PHY)F. G. Kondev (ANL/NE)S. Lakshmi (UMass-Lowell)C. Nair (ANL/NE)J. Rohrer (ANL/PHY)

G. Savard (ANL/PHY)K. Teh (ANL/PHY)J. Van Schelt (UChicago)

CARIBU Tape Station



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CARIBU Tape Station



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CARIBU Tape Station



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CARIBU Tape Station


Leading Systematic Effect


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Leading Systematic EffectTime Dependent DAQ Dead-timeRun #1 - 142Cs Beam

0 2 4 6 8 10 12 14 16 18 20Time into Cycle (sec)

0.97

0.98

0.99

1

1.01

AverageLive-timeFraction

(%)

Growth Decay

TapeMov

e-DAQVeto

Background

CARIBU Tape Station



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Time (sec)0 5 10 15 20 25

(keV)

E

940

945

950

955

960

965

970

975

980

= 967 keV

Ba, Run #2, E142Cs142 = 967 keV

Ba, Run #2, E142Cs142

Time (sec)0 5 10 15 20 25

Counts/1

00ms

0

10

20

30

40

50

60

70

= 967 keV

Ba, Run #2, E142Cs142

= 1.72(6) sec1/2T

/n= 1.02

= 967 keV

Ba, Run #2, E142Cs142

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Time (sec)0 5 10 15 20 25

(ke

V)

E

1140

1150

1160

1170

1180

1190

1200

= 1176 keV

Ba, Run #2, E142Cs142 = 1176 keV

Ba, Run #2, E142Cs142

Time (sec)0 5 10 15 20 25

Counts/1

00ms

0

5

10

15

20

25

30

= 1176 keV

Ba, Run #2, E142Cs142

= 1.7(1) sec1/2T

/n= 0.62

= 1176 keV

Ba, Run #2, E142Cs142

CARIBU Tape Station



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Time (sec)0 5 10 15 20 25

(ke

V)

E

1300

1305

1310

1315

1320

1325

1330

1335

1340

= 1326 keV

Ba, Run #2, E142Cs142 = 1326 keV

Ba, Run #2, E142Cs142

Time (sec)0 5 10 15 20 25

Counts/1

00ms

0

10

20

30

40

50

60

70

= 1326 keV

Ba, Run #2, E142Cs142

= 1.64(6) sec1/2T

/n= 1.22

= 1326 keV

Ba, Run #2, E142Cs142

CARIBU Tape Station


Run #2 - 142Cs Beam


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Run #2 Cs BeamE= 0-800 keV

Ge1GM__1Entries310508

Mean 294.4

RMS 177.1

(keV)E0 100 200 300 400 500 600 700 800

Counts/keV

0

200

400

600

800

1000

1200


Mean 294.4

RMS 177.1 Cs Beam142

Run #2 -

La2

32keV(12%)

142

Ba

142

Ce

641keV(47

%)

142

La

142

La

425keV(6%)

142

Ba

142

La25

5keV(21%)

142

Ba

142

511keV

Ba35

9keV(27%)

142

Cs

142

Ba380,

382

keV

142

Cs

142

Ba475keV(0.1

%)

142

Cs

142

Time (sec)0 5 10 15 20 25

(keV)

E

200

300

400

500

600

700

gtmat1__1Entries 310450

Mean x 8.961

Mean y 368.7

RMSx 4.047

RMSy 130.4

gtmat1__1Entries 310450

Mean x 8.961

Mean y 368.7

RMSx 4.047

RMSy 130.4Cs Beam142Run #2 - La) = 10.6 min

142Ba142(1/2T

Ce) = 91.1 min142La142

(1/2T

232 keV

255 keV

425 keV

641 keV

CARIBU Tape Station


Run #2 - 142Cs Beam


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Run #2 Cs BeamE= 800-1500 keV

Ge1GM__1

Entries310508

Mean 1096

RMS 187.4

(keV)E800 900 1000 1100 1200 1300 1400 1500

Coun

ts/ke

V

0

50

100

150

200

250

300

Ge1GM__1

Entries310508

Mean 1096

RMS 187.4 Cs Beam142Run #2 -

La

895ke

V(14%)

142

Ba

142

Ba

967keV(9%)

142

Cs

142

Ba1

326keV(13%)

142

Cs

142

B

a1176keV(4%)

142

Cs

142

Ba1280keV(2%)

142

Cs

142

Ba1064keV(1%)

142

Cs

142

Ba1423keV(1%)

142

Cs

142

Ba1243(0.5

%)

142

Cs

142

La1204keV(6%)

142

Ba

142

Ce1191ke

V(0.4

%)

142

La

142

***unlikely***

~1.6sec

1/2

???

E~1353keV,

TBa933keV(0.5

%)

142

Cs

142

La949keV(11%

)

142

Ba

142

Ba1101keV(0.3%

)

142

Cs

142

La1079keV(12%)

142

Ba

142

Ce1044keV(3%)

142

La

142

La1001keV(10%)

142

Ba

142

Cs984,9

96keV

142

Xe

142

Ce862keV(2%)

142

La

142

Time (sec)0 5 10 15 20 25

(keV)

E

800

900

1000

1100

1200

1300

1400

1500

gtmat1__1

Entries 310450Mean x 8.769Mean y 1096

RMSx 3.701RMSy 187.4

gtmat1__1

Entries 310450Mean x 8.769Mean y 1096

RMSx 3.701RMSy 187.4 Cs Beam

142Run #2 -

La) = 10.6 min142Ba142(1/2T

Ce) = 91.1 min142La142

(1/2T

895 keV

949 keV

1001 keV

1079 keV

1204 keV

1044 keV

CARIBU Tape Station


Run #2 - 142Cs Beam


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#E= 1500-2100 keV

Ge1GM__1__1

Entries310508

Mean 1783

RMS 172.5

(keV)E1500 1600 1700 1800 1900 2000 2100

Counts/keV

10

20

30

40

50

60

70

80

90

Ge1GM__1__1

Entries310508

Mean 1783

RMS 172.5 Cs Beam142

Run #2 -

B

a1768ke

V(0

.5%)

142

Cs

142

Ba1818

keV(0.3

%)

142

Cs

142

Ce

1901ke

V(7%)

142

La

142

***un

like

ly***

Ba1935keV(0.3

%)

142

Cs

142

B

a1982ke

V(1

.2%)

142

Cs

142

Ba

1957ke

V(0

.25%)

142

Cs

142

~1.6sec

1/2

???

E~1615keV,

T

Cs1711

keV

142

Xe

142

Time (sec)0 5 10 15 20 25

(keV)

E

1500

1600

1700

1800

1900

2000

2100

Cs Beam142Run #2 -

CARIBU Tape Station


Run #2 - 142Cs Beam


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#E= 2100-3000 keV


Mean 2457

RMS 229.7

(keV)E2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

Counts/keV

0

10

20

30

40

50

60

70


Mean 2457

RMS 229.7 Cs Beam142Run #2 -

C

e2398keV(13%)

142

La

142

Ce

2543keV(10%)

142

La

142

Ba2

246keV(0.4

%)

142

Cs

142

~1.6sec

1/2

???

E~2723keV,T

~1.6s

ec

1/2

???

E~2754keV,

T

Time (sec)0 5 10 15 20 25

(keV)

E

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

gtmat1__1

Entries 310450

Mean x 8.745Mean y 2457

RMSx 3.669

RMSy 229.7

gtmat1__1

Entries 310450

Mean x 8.745Mean y 2457

RMSx 3.669

RMSy 229.7 Cs Beam142

Run #2 -Ce) = 91.1 min142La

142(1/2T

2398 keV

2543 keV

CARIBU Tape Station


Run #3 - 144Cs Beam


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#E= 0-250 keV

(keV)E60 80 100 120 140 160 180 200 220 240

Counts/keV

0

10

20

30

40

50

60

70

80

90

100

Cs Beam144Run #3 -

Ba199keV

144

Cs

144

La228keV

144

Ba

144

???

La173keV

144

Ba

144

La153keV

144

Ba

144

La104keV

144

Ba

144

La109keV

144

B

a

144La

82keV

144

Ba

144

???

Ba116keV

144

Cs

144

Time (sec)0 2 4 6 8 10 12 14 16

(keV)

E

60

80

100

120

140

160

180

200

220

240

Cs Beam144Run #3 -

short-livedparent seems

parent seems

short-lived

Ba) = 0.994 sec144Cs144

(1/2T

La) = 11.5 sec144Ba144

(1/2T

104 keV

153 keV

173 keV

CARIBU Tape Station


Run #3 - 144Cs Beam


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#E= 250-450 keV

(keV)E260 280 300 320 340 360 380 400 420 440

Counts/keV

5

10

15

20

25

30

Cs Beam144Run #3 -

Ba

301,3

02,3

08keV

144

Cs

144

Ba331keV

144

Cs

144

B

a348keV

144

Cs

144 L

a355ke

V

144

Ba

144

Ce372-374keV

144

La

144

Ba

144

Cs

144

La430keV

144

Ba

144

Ce397keV

144

La

144

La388keV

144

Ba

144

Cs

144

Ba 394 keV144Cs144

should be here

Ba418

keV

144

Cs

144

Cs405ke

V

144

Xe

144

Time (sec)0 2 4 6 8 10 12 14 16

(keV)

E

260

280

300

320

340

360

380

400

420

440

Cs Beam144Run #3 - Ba) = 0.994 sec144Cs144(1/2T

La) = 11.5 sec144Ba144

(1/2TCe) = 40.8 sec144La

144(1/2T

430 keV

397 keV

388 keV

331 keV

302 keV

CARIBU Tape Station


Run #3 - 144Cs Beam


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E= 450-800 keV

(keV)E450 500 550 600 650 700 750 800

Counts/keV

0

5

10

15

20

25

30

Cs Beam144Run #3 -

Ba560keV

144

Cs

144

Ba639keV

144

Cs

144

Ba671keV

144

Cs

144

Ba759keV

144

Cs

144

Ce541keV

144

La

144

Ba

144

Cs

144

Time (sec)0 2 4 6 8 10 12 14 16

(keV)

E

450

500

550

600

650

700

750

800

Cs Beam144Run #3 -

759 keV

639 keV

560 keV

Ba) = 0.994 sec144Cs144

(1/2T

CARIBU Tape Station

ANL Tape Station Commissioning

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