GSI @ OCT

Aim

1. Charged studies. Done using: 2 chmbs + scint @ 90 degrees. Real profile measured with TLD (1mm reso). 1 point to measure a 3D blob. Then finer studies. need to quantify the needed stat.
2. Charged studies VS angle. Done using: 2 chmbs + scint @ 90 degrees.

When?

Beam time schedule

Starting from 12th October. Setting of cave takes ~ 2 days. Ends 16th October.

• Everyone should leave th 10th of October
• Someone should come back 15th Oct, someone after dismounting (18).

Tentative schedule

1. 8-11 Mounting
2. 11-13 Cave M setup
3. 13-14 Beam time

Where

Cave M. (Medical).

Before 12 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 on top of phantom: old chmb + BaF (or other fast scintillator)
4. One arm is fixed @ 90 degrees (collimator, BaF, veto)

Hardware

Gas system

Already @ GSI

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

Chambers fluxed in series.

Detectors

Already @ GSI

• 2mm Start counter or Daisy!
• New Chmb
• 1 (or 2) BaF scintillators
• Collimator?
• Veto?

To be brought from Roma1

• Old Chamber+ cables.
• 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

• Signal from TPS for Energy switch?
• Bridged ACQ.
  

ELOG

The elog of the TB can be found here

Software

@ CT : 30 min, 300 evt, 600 mum precision with 17*10^8 particles.

Acquisition

Being developed on workstation2. Project is under svn.

svn co svn+ssh://<youraccount>@pcaen1.ing2.uniroma1.it/home/sarti/SvnRepos/TestBeamCode/GsiOct_2011_Bridge

Decoding

Being developed on workstation2. Project is under svn.

svn co svn+ssh://<youraccount>@pcaen1.ing2.uniroma1.it/home/sarti/SvnRepos/TestBeamCode/GsiOct_2011_BridgeDecode

Configuration

As of 13 Oct 2011 @ 15:00.

QDC

1. QDC 1 (Baf): Gate 500ns, Ch0 --> SC, Ch1 --> Palettino, Ch2 --> LYSO1, Ch3 --> LYSO2
2. QDC 0 (Baf1, Ex Multianode): Multianode 8 Ch (0,1 & 4-15) from P1, 58, 34, 26, 18, 10, 59, 51, 43, 35, 27, 19, 11, 3 Delayed by 8-900 ns. Ch2,3 delayed by 300ns (P50, P42).
3. QDC 2 (Bad2): Empty

TDC

1. TDC 64 ch:
2. TDC 16 ch: 0--7 New Chmb. Ch 12 (sync signal). Ch 13: or of triggers.

Strategy

Calibration of detectors

• Lyso: should we calibrate?
• BM: how much time do we need to have ST relations? Look at BTF.... to see if we can use the old ST without new calibration

-- AlessioSarti - 2011-09-20

• dessin_exp14102011.eps: Experimental Setup

• dessin_exp14102011.svg: Experimental Setup

• Gsi_Detectors.txt: Cabling