R&D

Silicon

• Front-end.

  Design and develop the on-detector integrated circuits which include the functions of preamp, analog memory unit, ADC, sparsifier, control/data links, calibration, and possibly trigger primitives.

• Data boards. This off-detector system is responsible for sequencing the on-detector electronics, receiving the sparsified data, buffering multi-events, and possibly delivering data to the level 2 trigger.
• Slow controls. Design the system for monitoring cooling, power, other environment quantities, and position.

Drift chamber

• Front-end.

  Design and develop a preamp/shaper/line-driver for mounting on the drift chamber endplate. Design and develop the calibration pulsing and distribution system. Design the cable plant between the on-detector electronics and the crate-based electronics.

• Data boards. Design and develop a line-receiver/discriminator/integrator and a trigger-primitive generator. Design or procure the TDC/ADC system.
• Slow controls. Design the low and high voltage distribution and monitoring systems, the gas mixing and monitoring system, and the environment monitoring system.

Particle identification

• Front-end.

  Determine if an analog or digital system is required and then develop the appropriate preamp, shaper, discriminator, and line-driver. If trigger information is desired, supply the requisite signal drivers.

• Data boards. Develop a line-receiver/discriminator and trigger-primitive signals if required. Procure an ADC/TDC system.
• Slow controls. Design the low and high voltage distribution and monitoring systems, the gas mixing and monitoring system, and the environment monitoring system.

CsI calorimeter

• Data boards.

  Procure the ADC system. Modify the digital trigger bits if required and implement physical trigger quantities based on available analog trigger information.

• Slow controls. Interface the mixer/shaper crates to the control system and provide monitoring for low voltages, crate and preamp cooling systems, and other environment monitors.

Muon

• Front-end.

  Design and develop a preamp/shaper/line-driver- this may be identical to that of the drift chamber but mounted near the data boards. Design and develop the calibration pulsing and distribution system.

• Data boards. Procure the ADC system.
• Slow controls. Design the low and high voltage distribution and monitoring systems, the gas mixing and monitoring system, and the environment monitoring system.

Trigger

• Level 1 Processors.

  This level of the trigger will require development of processors for tracking and calorimetry and the decision logic. Simulation of the trigger logic, development of codes for inclusion in the physics Monte Carlo, and testing on simulated physics and background events will be done.

• Level 2 Processors. This level of the trigger will require development of processors for tracking, calorimetry, possibly silicon, and possibly particle identification, and the decision logic. Simulation of the trigger logic, development of codes for inclusion in the physics Monte Carlo, and testing on simulated physics and background events will be done.
• Level 3. This software trigger requires the development and simulation of algorithms.

Flow control

• Clock/gating system.

  Develop a uniform clock and gating distribution system and interface to the CESR timing system.

• Event and ID distribution. Develop a uniform mechanism for distributing event triggers, event tags, and event aborts to the data crates.
• DAQ throttles. Develop a uniform mechanism for collecting the status of the various event buffers and inhibiting further triggering as indicated.
• Dead-time monitors. Provide a mechanism for measuring the deadtime induced by the trigger and data acquisition systems.
• Configuration software. Develop code to configure and manipulate the gating and throttling system.
• Simulation. Simulate the system to establish its viability and integrity.

Data acquisition

• Crates.

  Establish a small set of crate formats for the crate-based electronics. Provide an environment monitoring port to the slow control system. Establish the location of the crate based electronics and any special housing requirements.

• CPU and OS. It is assumed that each data crate will have a local processor. Select a small number of processors and a common operating system, develop coding standards and code. Select a LAN technology for non-data communications with the processors.
• Data links. Develop a common data link protocol and hardware for moving event data from the crates to the event builder memories. Develop the event builder buffer memories.
• Online computer. Establish coding standards and generate event building and level 3 trigger codes. Allow partitioned readout of the experiment for simultaneous maintenance of the sub-detector systems.
• Trigger throttles. Generate signals for the event flow control throttling network.

Slow controls

• Development environment.

  Provide a uniform coding environment for all slow control code development.

• Standard alarms/limits package. Provide uniform and rugged alarms and limits utilities.
• Cryo interface. Interface to the He cryogenics plant.
• CESR interface. Interface to the CESR control system to share information on quantities of mutual interest.
• Operator interface. Provide the interface for the shift operators including run control, alarms, and displays of time trends of detector systems.