CLAS12 Calibration and Commissioning (CALCOM) Daniel S. Carman Jefferson Laboratory BONuSFest August 21, 2015

Outline CLAS CALCOM group Commissioning activities Input from detector subsystems Example of development (SVT) Commissioning with beam Summary Daniel S. Carman BONuSFest – August 21, 2015

CLAS12 CALCOM Group Calibration and Commissioning Group established in 2011 Oversight of commissioning and calibration activities for CLAS12 baseline and non-baseline detectors Liaison between detector groups and CLAS12 hardware and software experts 6 permanent members, including software experts and representatives of the detector groups Hardware Group Software Group CALCOM beamline magnets EC-PCAL FTOF CTOF DC SVT MM HTCC LTCC CND FT RICH OFFLINE ONLINE Slow Control CLAS12 Contact Persons … Daniel S. Carman BONuSFest – August 21, 2015

1). KPP verification, II). Full commissioning before physics run CALCOM Role Track efforts given timelines for installation and beam Help to find manpower and to ensure efficient use of resources Provide oversight to the development of calibration tools Provide feedback from the detector groups to the software group and vice versa In collaboration with the software group, provide software templates for detector groups and common I/O tools Work with subsystem groups to develop documentation, tutorials for calibration suites, and calibration tools Develop detailed plans for commissioning with beam activities 1). KPP verification, II). Full commissioning before physics run Daniel S. Carman BONuSFest – August 21, 2015

CLAS12 Commissioning The CLAS Collaboration has developed a comprehensive plan to commission the CLAS12 spectrometer and its subsystems: Three phases: Quality assurance and system checkout Commissioning without beam Commissioning with beam Detailed plan for each CLAS12 subsystem based on input from detector groups Procedures and tasks Manpower and time Software resources Daniel S. Carman BONuSFest – August 21, 2015

Commissioning Activities Meetings on CLAS12 subsystems: Participants: CALCOM members and subsystem representatives Purpose: discuss and review subsystem commissioning plans Outcomes: recommendation to subsystem groups Meetings with EC/PCAL, DC, FTOF, CTOF, CND, MM, SVT, FT, HTCC, Beamline, RICH Meeting minutes and committee recommendations available on CALCOM Wiki Daniel S. Carman BONuSFest – August 21, 2015

Commissioning Templates Daniel S. Carman BONuSFest – August 21, 2015

Commissioning Activities Subsystem Reports: Reports submitted from all CLAS12 subsystem groups via standard templates: Status, achievements, and issues Highlights Work plans, resources involved and timeline Documentation of progress Used for reports to collaboration Daniel S. Carman BONuSFest – August 21, 2015

Subsystem Group Responsibilities Detector subsystem documentation: Geometry document: Defines complete system specification Provides appropriate coordinate systems clear, easy-to-understand pictures Calibration database document: Identifies the parameters that are used to go from detector signal to "hit value” Monitoring document: Identifies histograms and other data summaries that will be used online to monitor detector performance and, in particular, identify malfunctioning equipment   Identifies plots to be used by the offline "chef" to make sure that the relevant reconstruction code (e.g. tracking, shower-finding, etc.) is working right; e.g. number of tracks per event, etc. Reconstruction software document: Describes the mathematical methods and formulae used in the reconstruction Monte Carlo baseline document: Details response of detector to be captured by Monte Carlo modeling Daniel S. Carman BONuSFest – August 21, 2015

Subsystem Group Responsibilities SLOW CONTROLS: Each detector group is asked to identify a person who will be responsible to act as a liaison to the Slow Controls team. Role: Work together with slow control group to define the slow controls needs of the system. Identify things that will already be taken care of as standard (e.g. HV, Low Voltage, Disc/Scaler) Identify any non-standard hardware and ensure that drivers / device support are available. NOTE. The development of drivers / device support will be done by specialists. Mostly already done. Create any specialist GUIs required for that system. This will be done using a drag and drop GUI builder tool. Templates and examples will be provided. Develop and specialized slow controls scripts / tools for that subsystem. e.g. initialization, monitoring, alarming. Daniel S. Carman BONuSFest – August 21, 2015

SVT Commissioning Advanced commissioning/calibration stage: Checkout of hardware systems complete: DAQ power supplies crates HV distribution boxes backend electronics patch panels slow controls modules cables, trigger System monitoring via EPICS operational Calibration via measurement of noise, gain, noise as a function of load Calibration via cosmic rays Daniel S. Carman BONuSFest – August 21, 2015

SVT Commissioning Noise and Gain, R1-R4 Median ENC 264 chips (R1-R4) Mean Gain 264 chips (R1-R4) MIP: 24000 e Equivalent Noise Charge in 128 channels of one readout chip Gain distribution in 128 channels of one readout chip Daniel S. Carman BONuSFest – August 21, 2015

SVT Commissioning Cosmic rays Strip occupancy 3D position of reconstructed crosses R1-R3 standalone trigger rate ~50 Hz Millions of cosmic tracks recorded Shorter strips 2D projection of a cross Strip occupancy Channel masking tested Daniel S. Carman BONuSFest – August 21, 2015

Temperature and humidity monitoring SVT Monitoring Module monitoring Temperature interlock R1 R3 Alarm handler R2 Humidity interlock Dew point interlock R4 Coolant interlock Chiller LV and HV PS control and monitoring Temperature and humidity monitoring Daniel S. Carman BONuSFest – August 21, 2015

SVT Monitoring Temperature, C Current, μA R1-R4 R2 Ambient temperature in the clean room Daniel S. Carman BONuSFest – August 21, 2015

Common Software Tools DATA I/O: Calibration database access tools: Histogramming tools Daniel S. Carman BONuSFest – August 21, 2015

Commissioning with Beam The “CWB” plan consists of 5 different phases from the initial functionality checks to the final preproduction data taking: detector functionality checks luminosity scan special runs for detector alignment magnetic field and energy scan detector calibrations ➔ assessment of detector functionality ➔ establishment of detector operation at nominal luminosity ➔ data for precise determination of relative detector positions ➔ study of detector response for different configurations ➔ data for full detector calibration and performance evaluation Daniel S. Carman BONuSFest – August 21, 2015

CWB Objectives After completion of the commissioning, the functionality of the Hall B instrumentation, including: all CLAS12 detectors installed in the initial data taking period the trigger, data acquisition, and slow control systems the CLAS12 online/offline software will have been verified The data accumulated during the CWB period will allow the CLAS Collaboration to: perform full calibrations of the spectrometer assess its performance in terms of resolution, kinematical coverage, and efficiency before the beginning of production data taking Daniel S. Carman BONuSFest – August 21, 2015

CWB Timeline Daniel S. Carman BONuSFest – August 21, 2015

BONuS CALCOM Work To proceed in preparation for calibration and commissioning work for the BONuS experiment: Define a contact person for BONuS hardware and software Prepare a detailed commissioning plan: System Quality Assurance during detector construction/assembly Commissioning plan after detector assembly for both before and after installation in Hall B. Detailed commissioning with beam plan for BONuS Prepare the required documentation: Geometry specifications Database definitions Detector monitoring requirements Reconstruction approach Monte Carlo matching specifications Daniel S. Carman BONuSFest – August 21, 2015

Summary The CLAS Collaboration has developed a detailed Commissioning Plan for the CLAS12 detector and its subsystems The plan is structured in different phases from the initial functionality assessment to the final pre-production data taking The plan has been developed to help ensure: The subsystem components have met rigorous QA requirements during assembly The subsystems have been sufficiently and fully tested before installation to minimize potential issues The subsystems have detailed plans developed for cosmic ray/laser/pulser studies post installation to be sure they are ready for commissioning runs A detailed commissioning with beam plan for CLAS12 and its subsystems has been developed A path forward for the BONuS group to integrate into the CALCOM scheme has been presented Daniel S. Carman BONuSFest – August 21, 2015