ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 1

I A S FSez.Palermo

ULTRA

Uv Light Transmission and Reflection in Atmosphere

DAQ of BABY some considerations on ULTRA telemetry

Activity also supported by Italian INFN.

ULTRA

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 2

I A S FSez.Palermo

ULTRABABY: block diagram

• 4 channels Integration Unit in NIM module• 4 channels Count Unit in NIM module• 8 channels Memory Unit w/ host interface (NIM)• Head Unit: HV, controls and housekeeping(NIM)• Host: Pentium(red. speed 75MHz w/o fan) + Pressurized H/Ds case

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 3

I A S FSez.Palermo

ULTRA

• 100 or 1000 pF set sensitivity to 10 or 1 mV/pC• Sampling at 1MS/s constant rate (10MS/s w/ external clk)• Offset suppression using a second Op.Amp• 1 Q/C step represents the average V due to a single p.e.

Charge Integrator Unit

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 4

I A S FSez.Palermo

ULTRA

• Bipolar threshold and polarity selection• Sampling at 1MS/s constant rate (10MS/s w/ external clock)• 1 count corresponds to 1 single p.e. over threshold• 0.1 mV threshold step in ± 1 V range

Single photon counting unit

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 5

I A S FSez.Palermo

ULTRA

• Input Data Mem Buffer

• Filter&Tag Data Processor

• Filtered&Tagged Data Mem

• Inter-units synchronization

• I/O port

= 128kW, 8MW/s r/w access

= 8 MW/s

= 64 kW, 8MW/s r/w access

= Yes

= Parallel std IEEE1284-EPP

Memory unit features

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 6

I A S FSez.Palermo

ULTRA

• At the same time (change A and B each time window):– input A data stored in memory buffer A– old B data filtered & tagged in filtered&tagged buffer B– filtered & tagged memory buffer A read from PC

Memory operational sequences

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 7

I A S FSez.Palermo

ULTRAUV scope block diagram

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 8

I A S FSez.Palermo

ULTRA

• Self consistent electronics for each channel (PC excluded)

• Both single photoelectron count and charge integration in the same module

• 10 ns double pulse discrimination• 14 bit ADC• 100 ns resolution time• Pre-processing before storing data• Re-programmable processing and control logic

UV scope new features

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 9

I A S FSez.Palermo

ULTRA

Telemetry : wireless network 0

1

2 3

7

6 5

4

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 10

I A S FSez.Palermo

ULTRA

Telemetry needs

• Programming or changing parameters• Monitoring station health• Quick look of data• Rough synchronization• < 2kbytes/s per station of data traffic (rough

estimation)

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 11

I A S FSez.Palermo

ULTRA

Simple isofrequency Tx- and Rx-ceivers

• Low cost• 19200bps-100kbps

• Extra electronics needed• Legacy problems• Unknown site frequency usage

(interference possibility)

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 12

I A S FSez.Palermo

ULTRA

Radio modems• PC connection thru a standard RS232 interface• Use of old fashioned Op. System (if needed)• Power Supply 30..9 Vdc• Max 19200 baud available, limiting the whole data

traffic to 2kbytes/s• Legacy problems for higher frequency and power

ULTRA meeting: Turin 24-25th Jan 2002 Gino. Gugliotta@ IASF. PA. CNR. IT 13

I A S FSez.Palermo

ULTRA

• 11Mbps (up to 108) of network speed

• Web based management• PCI boards, USB and

PCMCIA modules• Full remote control• Windows like O.S.’s• Legacy

Wireless LAN