Lund Lund York Cologne Calorimeter present status test results with AGATA@GSI Thanks to Andreas...

LLundund

YYorkork

CCologneologne

CaCalorimeterlorimeter

• present status• test results• with AGATA@GSI

Thanks to Andreas Wendt !!

RIB vom FRS

Sekundary target

Diamond or Plastic

Time-of-Flight (ΔE, x, y)

CsIDSSD DSSD

(E)(x, y)

Reminder: Detection principle

AGATA @ GSI meetingMay 4th 2010, Is

University of CologneAndreas Wendt

LYCCA-0 ΔE-E-hardware:12 DSSDs12x9 CsI (long/short)

University of YorkMike Bentley





Double fragmentation reaction: 40Ca (420 MeV/u) + 9Be (4.0 g/cm2) → 37Ca (196 MeV/u ) + 9Be (0.7 g/cm2)

37Ca (85 %)2*103 p/sec

36K (10 %)

Selection by FRS Selection by CATE (Energy-loss/Energy)





Mass Selection by Time-of-Flight and EnergySimulation: M.J.Taylor et al

(assumes 3m flight path and 50ps FWHM))

Expected performance: Mass identification (if ~50ps FWHM timing achieved)

• Mass separation up to A~70• Some mass information at A~100• Depends on specific case (needs simulation)

LYCCA chamber: • up to 72 KEL-Feethroughs• 32 SHV+Lemo-FT

Status: mechanics

Preparation and storage @ X7

Vacuum test @ cologne (5·10-5mbar)Feb. 2010

AGATA @ GSI meetingApril 30th 2010, GSI

Used as TKE-detector(for S272 @ S4)Mar./Apr. 2010



ΔE-detector status:

• 10 DSSDs ready!

• 8 @ Lund, awaiting bonding

[2 ΔE-detectors tested in-beam]

- 32 x 32 strips - Active area 58 x 58 mm² - Interstrip distance : 75 μm - thickness: 300 μm

12 ΔE-detector needed for LYCCA-0

Status: Silicon detectors

Ordering status:

• 18 DSSDs delivered • all T-boards delivered • connectors on-hand




„short“ crystals (13+7mm)• 2 E-Blocks assembled, tested• crystals for another 4 blocks available• mechanics for 12 E-Blocks available

„long“ crystals (33+7mm)• crystals for 13 E-Blocks on hand• 4 E-Blocks (used for S272) ready

40

.0

short

long

Status: CsI-scintillators




Status: Time-of-flight PLASTIC




Detector constructed for ToF-stop- New one being constructed for ToF-start• Stop-detector tested in-beam (GSI)• 300 MeV/u 58Ni

Robert Hoischen et al (Lund/GSI)

SC42 180ps FWHM

Plastic ToF 40ps FWHM

Status: Time-of-flight DIAMOND




Start-detector: 9 x PC 2x2cm wafers (4 strips)• 36 detector segments• Prototype wafers fabricated and tested• 5 wafers will be put in detector in June/July 2010• Fast DBAIV current pre-amps + V1290 TDC

First tests TEXAS A&M March/April 2010• ~35MeV/u 40Ar beam• ~20 MeV/u 20Ne beam

Status: Time-of-flight DIAMOND




Best achieved ~90ps FWHM

~20 MeV/u 20Ne beam

20Ne 16OBUT• …problems with detector reliability (HV breakdown, PCB?) • …and fabrication consistency.

~35MeV/u 40Ar beam

Best ~90ps FWHM

Time-of-flight for AGATA




Secondary target

Plastic

Time-of-Flight (ΔE, x, y)

CsIDSSD DSSD

(E)(x, y)

Diamond Plastic

Two options:• Diamond start AT TARGET (~70ps FWHM required) and Plastic stop (50ps ideal)OR.. • Plastic start UPSTREAM OF TARGET (~50ps FWHM required) and Plastic stop (50ps ideal)

THESE will be tested in June/July 2010

200 MeV:• 18 available

4 GeV:• prototype tested• 22 available

LYCCA-0: DSSD 384ch + CsI 108ch

→ 12 + 4 PreAmps

16ch 9ch

9ch 9ch 9ch

9ch 9ch 9ch

9ch

9ch

9ch

9ch9ch

16ch

16ch16ch

16ch

16ch

16ch

16ch

64ch

64ch

64ch

64ch

Status: Electronics

9ch

9ch

64ch+9ch

9ch

LYCCA for S272: DSSD 64ch + CsI 36ch

→ 2 + 2 PreAmps

(x2 / x4 join-board)32ch - CSP




FWHM: 41 keV @ 5484 keV~ 0,75 % (241Am) 6 cm

Test results: DSSD off-beam

Test chamber




Test results: LYCCA @ S272


LE 3 LE 4

LE 1LE 2

DSSD

Top-left: Hit pattern DSSDTop-right: HP of DSSD, if LE2(4) is hit Bottom-left: HP of DSSD, if LE2(5) is hitBottom-right: HP of CsI-crystals

total

6 7 8

3 4 5

0 1 2

Labeling of crystals



Test results: LYCCA @ S272


ΔE(Σ p-side)

TKE (Σ LE2)

Not calibrated yet

Gen.

ΔE (p2)

TKE (LE2(6))



Jun./July 2010 Sep. 2010

Timeline

Mar./Apr. 2010

LYCCA-0Comissioning

Pre

Sp

ec I

@ F

RS

LYCCA-00@ S272


Photomontage: view on LYCCA-0



LYCCA Simulations




NIM A 606 (2009) 589-597

LYCCA-0 Simulations• Full MOCADI event generator (realistic beam and reaction profile)• Full implementation of LYCCA-0 detectors• Time-of-flight options (both) now included• Variable parameters (resolutions, flight path etc)

VISIT:

LYCCA page at Lund University

(type “LYCCA” in Google) !!


LYCCA-Collaboration


P. Reiter, A. Wendt, C. Goergen, G. Pascovici, J. Taprogge, S. Thiel

University of Cologne

D. Rudolph, P. Golubev, R. Hoischen Lund University

M. A. Bentley, M. Taylor, B.S.Nara Singh, S.P. Fox

University of York

J. Gerl, GSI PreSpec Collaboration

NUSTAR Simulation group

Lund Lund York Cologne Calorimeter present status test results with AGATA@GSI Thanks to Andreas...

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