1. ArgonneBeamTest_2003-11-03.ppt1 Argonne Beam Test preparation Tsunefumi Mizuno (mizuno@SLAC.Stanford.EDU)mizuno@SLAC.Stanford.EDU Tuneyoshi Kamae (kamae@SLAC.Stanford.EDU)kamae@SLAC.Stanford.EDU November 03, 2003 History of changes October 17, 2003 First written by T. Mizuno October 20, 2003 updated October 22, 2003 updated by T. Mizuno October 29, 2003 updated by T. Mizuno November 03, 2003 updated by T. Mizuno

2. ArgonneBeamTest_2003-11-03.ppt2 20cm 18cm PMT Mount (1)

3. ArgonneBeamTest_2003-11-03.ppt3 PMT Mount(2)

4. ArgonneBeamTest_2003-11-03.ppt4 Module list SLAC can provide (as of Oct17) 1) Very old PMT HV supply (0-3000V): 1 unit 2) Hand-made 8ch distributor for the HV supply (item 1 above) No voltage adjustment possible. 3) Desktop power supply (Vmax=30V, Imax=500mA): 1 unit 4) Desktop power supply (Vmax=20V, Imax=2A): 1 unit 5) Charge preamplifier (16ch) by Clear Pulse in Japan: 1 unit Requires +12V and -12V. Integration time 56us 6) Shaping amplifier (16ch) by Clear Pulse (?): 1 unit Shaping time 2us. 2 outputs per channel 7) Fast discriminator by Philips Scientific (looks almost like the one by LRS): 2 units. Each takes 5 inputs. 8) Gate generator (2ch) by LRS222: 1 unit. One channel has some problem. 9) NIM/TTL level converter (16ch): 1 unit 10) Fast coincidence (3ch) made by SLAC: 1 unit. 4 inputs per channel. 11) Very very old visual scaler: 2 units. 12) NIM Crate: 1 unit 13) Oscilloscope Tektronix 2443: 1 unit 14) PMT borrowed from Princeton: 8 units (takes negative HV) 15) Fast hexagonal scintillator: 8 units 16) PCI-based DAQ by ADLink: Digital I/O card (PCI-7200): 1 unit 17) PCI-based DAQ by ADLink: ADC card (PCI-9810): 1 unit. 4ch 10bits 18) PCI-based DAQ by ADLink: ADC card (PCI-9812): 1 unit. 4ch 12bits 19) Desktop PC for PCI-based on-line DAQ with LabView 20) Princeton current amplifier (4ch): 1 unit. 1)-19) have been used in Spring 8 test. We plan to modify the DAQ system at Spring-8 and use it for Argonne Beam Test. We will show the DAQ diagram in near future

5. ArgonneBeamTest_2003-11-03.ppt5 DAQ system (for test with RI) For reference, test setup with RI at SLAC is given here. Please see the next page for the setup of Argonne beam test.

6. ArgonneBeamTest_2003-11-03.ppt6 DAQ system (for beam test) Install sensors and analog modules in beam area, and others in monitor room (if possible). Not central scintillator but surrounding 6 scintillators generate the trigger (to reduce the trigger rate). We will see if there is hit in central scintillator or not in off-line analysis. We want to borrow following modules; Visual scaler (all we have are two, very old, single-channel visual scalers) Compact HV supply (if possible) Pulse Generator (this is not crucial, but helps us test the DAQ in laboratory and at Argonne)

7. ArgonneBeamTest_2003-11-03.ppt7 DAQ System(2) Sampling rate and the # of data points per card. They are user adjustable but some other combinations of parameters make the DAQ unstable display waveforms # of data points per channel after the trigger. This is user adjustable # of data points per channel that will be displayed and recorded to a file, user adjustable data file names (waveform data and peak data) Trigger conditions, user adjustable For every 10 events (this # is user adjustable), DAQ records events to a disk and displays waveforms of the last event in the “packet”. # of acquired packets

8. ArgonneBeamTest_2003-11-03.ppt8 DAQ system(3) Data acquisition speed is ~600Hz (depends on the packet size chosen by user). DAQ records two files, one is to save the peak voltages (text file) and the other all waveform data (binary file, 50 points per channel=400points per event). The peak data file size is ~50byte/event and waveform data file ~1600byte/event (1.6Gbyte for 1M events!). Do we need to record waveforms? Peak data file looks like below. (I fed pulse only in channel 1) 0.000 -1.086 0.000 0.000 0.000 0.000 0.000 0.000 0.000 -1.060 0.000 0.000 0.000 0.000 0.000 -0.010 0.000 -1.086 0.000 0.000 0.000 0.000 0.000 -0.010 0.000 -1.069 0.000 -0.002 0.000 0.000 0.000 -0.010 -0.002 -1.099 0.000 0.000 0.000 0.000 0.000 -0.010 -0.002 -1.101 -0.002 0.000 0.000 0.000 0.000 -0.010 -0.002 -1.101 0.000 -0.002 0.000 0.000 0.000 -0.010 -0.002 -1.057 0.000 -0.002 0.000 0.000 0.000 0.000 -0.002 -1.094 0.000 -0.002 0.000 0.000 0.000 -0.010 Require substantial (e.g., depE>=20keV) energy deposition in surrounding scintillators (see the previous page). Then the trigger rate becomes reasonable.

9. ArgonneBeamTest_2003-11-03.ppt9 Modules and support structure 241Am and scatterer Detectors(inside) Preamp(charge amp) Shaper Support structure (~1.2m height, positions of the wooden plane are adjustable) Above is the photo of RI test setup. We may bring the support and use it at Argonne if the “lift table” doesn’t fit for our setup.

10. ArgonneBeamTest_2003-11-03.ppt10 Result of RI experiment polarization vector 30degree 0degree Source: 241Am(59.5keV->53.3keV) 2hits is required (detection threshold is 3keV) depE<20keV for central scintillator 40keV<=totDepE<=80keV

11. ArgonneBeamTest_2003-11-03.ppt11 Modules from SLAC(1) Fan-in/Fan-out Pulse generator (for DAQ test ) PMT amp Discriminator*2 Coincidence Dual Gate Generator (to generate trigger) Dual Gate Generator (to generate clock) NIM/TTL level adapter Two single-channel scalers HV supply NIM Crate

12. ArgonneBeamTest_2003-11-03.ppt12 Modules from SLAC(2) Sensors(PMT+scint.) Power supply (+-12V, +-15V) HV divider Charge amp Shaping amp

13. ArgonneBeamTest_2003-11-03.ppt13 Modules from SLAC(3) New PMT mount (an Al plate and rotation mechanism to be added to the plastic mount shown in page 2), under construction

14. ArgonneBeamTest_2003-11-03.ppt14 Modules from SLAC (4) PCI-based DAQ by ADLink: Digital I/O card (PCI-7200): 1 unit PCI-based DAQ by ADLink: ADC card (PCI-9810): 1 unit. 4ch 10bits PCI-based DAQ by ADLink: ADC card (PCI-9812): 1 unit. 4ch 12bits Desktop PC for PCI-based on-line DAQ with LabView and LCD monitor 10m BNC cables*10 Consumable supplies (e.g., optical glue, grease, tape), utensils (e.g., driver), etc. We want to borrow following modules if possible Visual scaler (at least 2ch) HV supply (negative HV for PMT) Pulse generator, clock generator oscilloscope