GSI @ OCT

Aim

1. We are going to use silvio as target. Monoenergetic: 200/220 MeV/u. PMMA or poly for modeling... Transversal dimension?
2. One arm: chamber + LYSO (charged particles flux + shape along z)
3. Other arm: Baf + collimator+ CMOS ?

When?

Starting from 9-14 May. Setting of cave takes ~ 1 day. We are going to have 1-2 shifts.

• We start the 10th of May
• We end the 15th May

Tentative schedule

1. To be done.

Where

Cave A.

Before 10 setting of the cave + quality check of the beam.

Mechanics

Rec with wheels. (dismounting)

Table + arms to hold detectors.

1. One start counter BEFORE the phantom.
2. One arm should move in theta: New BM + LYso
3. One arm is fixed @ 90 degrees (collimator, BaF, veto)

Target

1. 5x5x20 PMMA
2. 20x20x20 PMMA
3. Testa (silvio)

Hardware

Gas system

Already @ GSI

• Gas system.
• Gas bottle (premixed 82/18 Ar Co2)

Chambers fluxed in series.

Detectors

To be brought from roma1.

• New Chmb
• 1 (or 2) BaF scintillators
• Collimator?
• Veto?

Detectors @ GSI.

• Start counter (GSI)

To be brought from Roma1

• New Start Counter read with two H10580 PMT, SC thickness: plexiglass 1,8 mm :: Aluminum foil 0,05 mm :: Black tape 0,25 mm
• Lyso

Power supply

Already @ GSI

• LV power supply: 4 channels. (for the two chambers)

To be brought from Roma1

• HV: any other needed channel.
• HV: 4 channels. [3 channels for the two chambers.]

Channels:

• HV:
  • 3chs (New and OLd chmb)
  • 2chs (BaF)
  • 2chs HV
  • 1ch Start Counter GSI
  • 1ch veto
• LV:
  • 4 channels (2 chambers)
  • 2 channels (Daisy)

Electronics

Already @ GSI

• Crate Nim (ex FIRST trigger)
• Crate VME
• Scope (?)
• Crate Camac (?)

To be brought from Roma1

• Crate Camac
• Crate Nim

NIM Modules

• Most of them are @ GSI: nim/ecl translators, discriminators....
• Nim/TTL translator (GSI)

VME Modules

• 3 QDC modules: 2 Roma1, 1 GSI
• 2 TDC modules: 1190 + ? KLOE TDCs? GSI TDC?
• I/O
• Scaler

Delay modules?

Cables

• 40 Lemo Cables (GSI)

DAQ

• Bridged ACQ.

ELOG

The elog of the TB can be found here

Software

Acquisition

Being developed on workstation2. Project will be under svn.

svn co svn+ssh://<youraccount>@pcaen1.ing2.uniroma1.it/home/sarti/SvnRepos/TestBeamCode/GsiMay_2012_Bridge

Decoding

Being developed on workstation2. Project will be under svn.

svn co svn+ssh://<youraccount>@pcaen1.ing2.uniroma1.it/home/sarti/SvnRepos/TestBeamCode/GsiMay_2012_BridgeDecode

Configuration

QDC

TDC

Strategy

Calibration of detectors

• Lyso: should we calibrate?

Neutral Analysis

Code is in svn (BridgeDecode folder)

• Ana.cc (to be compiled with makefile_Ana)
• Full production can be launched with SingleMeasurements.sh
• The output has to be proceessed with macros in folder Spettro/

Several test done

• PhotonsOutput: contains "benchmark results" from Michi
• PhotonsOutputNew: New calibration + added DT correction INSIDE Ana.cc + removal of scorsize == 1 requirement
• PhotonsOutputNewNoSele: removed the "single carbon" selection + New calibration + added DT correction INSIDE Ana.cc + removal of scorsize == 1 requirement
• PhotonsOutputNewNoSele_AndTiming: removed the "single carbon" selection + New calibration + added DT correction INSIDE Ana.cc + removal of scorsize == 1 requirement .. Now to compute the time we use the AND and not the OR (shouldn't make any real difference)

-- AlessioSarti - 2012-03-06