Interface between CISC and Detector Facilities A. Cervera S. - - PowerPoint PPT Presentation

Interface between CISC and Detector Facilities

• A. Cervera
• S. Gollapinni

CISC meeting 13/02/2019

Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Contents of interface document

• Introduction
• Detector Integration
• DUNE Detector Infrastructure
• Detector Support Structures (DSS)
• Connection to cryostat penetrations
• Racks and Cable Trays
• Internal Cryogenic Piping
• Detector Safety System
• Facilities (LBNF) interfaces
• Conventional Facilities
• Cryostat
• Cryogenic Systems

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

General comments

• We need to be more specific
• Adding more info in some cases
• Adding a link to another DocDB document in other cases

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

DSS

• CISC will use DSS ports (the ports will be equipped with a CF63 side flange) as needed to route cables for Static T-

gradient monitors, Individual sensors and cameras. The distribution of those systems is yet to be finalized and hence the

• ptimal cable routing is not yet decided. The choice of DSS ports to be used and the exact cable path should be a

combined decision between CISC and the DUNE Technical Coordination. CISC will purchase the flanges.

• DSS I-bins can be used to route cables from instrumentation devices (e.g. individual temperature sensors) to cryostat

(DSS and non-DSS) ports.

• There are cable trays on the APAs that we can use
• Grounding and shielding requirements on connections to DSS: all cable shields should be insulated from one

another and any extra ground connections. The cable shield grounding should be configured flexibly.

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Connection to cryostat penetrations

• non-DSS ports, and in particular ports used by the cryogenic pipes (the ports will be equipped with a CF63 side flange), will be used to route

cables from Static T-gradient monitors, individual temperature sensors, cold cameras and light emitting system. The distribution of sensors/ cameras/lights and their optimal cable routing is not yet decided. The choice of ports to be used and the exact cable path should be a combined decision between CISC and the DUNE Technical Coordination. CISC will purchase the flanges.

• not obvious this is needed. DSS ports are probably sufficient
• Cables from the instrumentation devices to the cryostat ports are:
• There will be a four wires (2 twisted pair) shielded cable for each temperature sensor. The cable used for ProtoDUNE-SP has 3.5 mm
• diameter. Assuming 500 temperature sensors per detector, distributed in 24 sensors per port (4 SUB-25 connectors), the cable bundle for

each port will have a diameter of 20 mm

• Cable requirements and specifications for purity monitors is still being understood and will be included in a future draft.
• Cable requirements and specifications for camera systems is still being understood and will be included in a future draft.
• Cable requirements and specifications for light emitting system for cameras is still being understood and will be included in a future draft.
• Cables from the several instrumentation devices inside the cryostat will have to be routed towards the corresponding port. Several mechanical

structures are under consideration: cable trays could be attached to bolts in the detector corners (joints between two walls, including floor and roof), or those bolts could be used directly attaching the appropriate individual supports (rings, etc.).

• There are cable trays on the APAs that we could use. Not obvious there is space for instrumentation cables
• Each purity monitor assembly will require a space of 1 m2 on top of the selected port (light source and Front-end amplifier). Dynamic T-gradient

monitors will need an horizontal space of 1 m2 on top of the selected ports (motor, …), and a vertical space of at least 3.5 m (more will simplify the installation). Inspection cameras will need a space of 1.5(vertical)x2x1.5 m3 on top of the selected ports if the glove box design is used (https:// arxiv.org/pdf/0903.0441.pdf, page 5), and 2.5 (vertical) x 0.5 x 0.5 for the periscope version.

• Purity Monitors, dynamic T-gradient monitors and inspection cameras need some vertical space above the cryostat. CISC should ensure that in

the case any of these devices are installed below the mezzanine the required vertical space is sufficient; otherwise, ports outside the mezzanine should be chosen. Need to be clarified. Precise location, clearance needed, etc

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Racks on top of cryostat

• Detector electrical infrastructure required to be housed in racks located on top of the cryostat are (need list of items that

need to go within each rack, the rack space requirements for needed power supplies and crates, etc.):

• On the Slow Controls side,
• a 1U Slow Controls box that will be used to monitor rack parameters such as rack fans, air temperatures, status
• f the rack protection system, and thermal interlocks with power supplies etc. will be installed in every rack. The

power to this unit will be derived from the common rack AC power; no specific power requirements are needed. IT IS 2U IN THE CISC/DAQ INTERFACE DOC.

• CISC will require sub-systems to be monitored to be on network and as such a network box with several

Ethernet switches will be required in each rack to network devices including the 1U rack monitoring box mentioned above and Slow Controls servers. The network box is expected to be attached to the inside side wall

• f the rack (as done in MicroBooNE) and is not expected to take any significant rack space.
• On the Cryogenic Instrumentation side,
• Rack space will be required to house power supplies for instrumentation systems (e.g. HV power supply for

purity monitors) that require power. Some of these systems will require crates and cooling may be needed using external fans. The Consortium is working on finalizing these details and plans to include them in a future iteration

• f this document.
• Missing instrumentation readout ??? Does it belong here ?
• CISC will monitor (and in some cases control) all rack parameters such as rack fan speeds, air temperatures, power

supply thermal interlock status bits, rack protection system status bit and all device interlock status bits that are housed in a given rack.

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Cables outside cryostat

• The cables from the flanges to the racks are (need number of cables, cable sizes, special routing requirements, etc.):
• Cables from temperature sensors: ProtoDUNE-SP is using CERN standard MCA 26 13 twisted pair shielded cable, with a

diameter of 10 mm for 6 sensors. It is not yet decided whether those cables will be used in DUNE.

• Cable requirements and specifications for purity monitors is still being understood and will be included in a future draft.
• Cable requirements and specifications for camera systems is still being understood and will be included in a future draft.
• Cable requirements and specifications for light emitting system for cameras is still being understood and will be included

in a future draft.

• The cables going from the racks to other locations both on and off the detector are (need number of cables, cable sizes,

cable end locations, special routing requirements, etc.): more details needed

• Like all other devices, standard cabling will be required that will go from racks to instrumentation devices from the

corresponding hardware (e.g. power supply) housed in the rack.

• Network connections (optical fibers) going from each rack on the cryostat to the network rack in the DAQ room; this is a

common need and is expected to fall under the scope of facility.

• All instrumentation devices will be on detector ground. All cables will be EMF shielded with the shield connected to the

readout system on the racks and the edge on the flange will be left floating. Not true, what about inline PrMs and gas analysers ?

• Grounding and shielding requirements for cables attached at racks: For "readout" cables (e.g. purity monitors), they should also

be shielded and grounded near the point of readout in the racks. Fiber connections do not use electrical shielding for signal integrity, but if they have metallic shielding for protection, the shielding should be connected to ground, preferably at the racks.

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Power and cooling requirements

• Power requirements for power supplies and crates installed in racks:
• On the Slow Controls hardware side, CISC will not have any major power requirements. CISC power needs

such as power to the network box, power to slow controls rack monitoring box (typically less than a few volts) are generally covered under common rack infrastructure. For the power supplies and crates that CISC will monitor, defining power requirements is under the scope of each sub-system consortia. CISC just provides monitoring and control of the system including any monitoring of any variables related to power.

• In the case of instrumentation devices, CISC will have some power requirements (e.g. purity monitors use a HV

power supply that will require power). The details of power requirements for instrumentation devices is still being worked out and will be included in a future iteration of this document. THESE REQUIREMENTS SHOULD BE AVAILABLE FROM PROTODUNE

• Cooling requirements for power supplies and crates installed in racks:
• On the Slow controls side, there will not be any specific cooling requirements except for the Slow Controls

servers in the DAQ room. But, this will be addressed as part of the common infrastructure for racks and the server room. CISC will provide monitoring of fans within the CISC Servers (and others) as part of CPU hardware monitoring.

• On the instrumentation side, all systems such as purity monitors, that will use a power supply that will use

beyond a few volts, will require cooling through external rack fans (included as part of the common rack infrastructure) or internal fans provided by the power supply manufacturer themselves. For systems that will use crates, the depth of the crate decides the level of cooling needed. None of these details are finalized for instrumentation devices yet and the goal is to address them in a future iteration of this document.

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Internal cryogenics piping

• CISC consortium will use internal cryogenic pipes as anchoring points for precision temperature sensors and their

corresponding cables. Following ProtoDUNE-SP design, split clamps of the appropriate diameter will be used to hold Teflon supports for cables and FR4 supports for sensors. The distribution of sensors has not been decided yet; this as well as the design and fabrication of the supports, the cable routing and the installation of sensors is the responsibility of the CISC consortium.

• More detailed info needed. Link to a technical document
• For the dual-phase detectors CISC should make sure the installation of temperature sensors on the bottom pipes

does not interfere with photon-detectors or their associated mechanical structure and cables.

• Purity monitors could use vertical cryogenic pipes as intermediate anchoring points. This would allow purity

monitors to be closer to the field cage and thus measure a more representative purity. This option is under discussion with the technical coordination team.

• IS THIS AN OPTION ?
• Grounding/Shielding requirements for the instrumentation and cables to be attached to the internal cryogenic piping are:
• Cables for temperature sensor readout will have EMF shielding and an outer teflon jacket. The shield will be

connected to the flange and will be left floating at the sensor side. Link to a document explaining it

• In the case Purity Monitors or dynamic T-gradient monitors that use vertical pipes as intermediate anchoring points,

the connection to the pipes should be such that no grounding loop is introduced. MOST LIKELY TO BE

• REMOVED. DYNAMIC THERMOMETERS WILL BE IN THE TCO SIDE AND PRMs IN THE CORNER

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Detector Safety System

• CISC will provide the status and alarms on safety to operators for following systems:
• Rack-level: power supply trips (HV, Wire bias, PDS etc.) and rack protection system status (fire alarms, AC current

surges etc.) status bit monitoring

• Safety Interlock status bit monitoring for various detector sub-systems and their interaction (Laser, PDS, HV etc.). The

hardware for the interlocks and related design is not under the scope of the CISC consortium

• For the facility, CISC can extract information from the facility safety system to monitor status on ODH, Cryogenic

leaks (from the cryogenics system) and smoke/fire. Status of the elevators can also be provided to shifters if that information can be accessed. Additionally, monitoring the status of surrounding facilities (e.g. Majorana) will be useful since being underground there can be impact on safety at the LBNF facility

• Detector components that need to be shut down in the event of specific alarm conditions such as fire alarms, ODH

alarms:

• From the Slow Controls side, there are no detector components in the racks that will require shutdown except for the

slow controls rack monitoring box and it is expected that the rack safety system should turn off the entire rack (including the box) during conditions such as fire.

• From the Cryogenic Instrumentation side, devices that will require shut down are purity monitors (if they are running),

thermometers and camera systems.

• One of the goals of the CISC consortium is to establish two-way communications between detector safety and facilities

safety by pipelining information into the slow controls to give one integrated view to the shifters in the control room.

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Conventional facilities

• Instrumentation devices are in general small except the supporting structures for Purity Monitors and T-

gradient monitors, which will cover the entire height of the cryostat. Being the load on those structures relatively small (<100 kg) they can be fabricated in parts of less than 3 m, which can be easily transported to SURF. No special considerations needed to be taken into account to take those containers underground.

• For instrumentation devices the requirements on off-detector storage/work spaces on the surface and in

the underground areas are quite modest, since those devices are in general small. We should be more

• specific. Add a link to amore detailed document
• Since networking is a critical aspect for communication with devices, optic fiber cables between the

underground area and the surface will be needed and is an important interface for CISC.

• No special requirements on the overall power, cleanliness, and cooling requirements associated with the

consortia components in both the detector caverns and the central utility cavern.

• No special requirements on underground air cleanliness

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Cryostat

• The size and locations of required cryostat penetrations for instrumentation for the SP module has been worked out with the

cryostat engineering team and are incorporated in the current design. The standard size of the cryostat penetration is sufficient. One dedicated port on the East side near mid-drift outside the field cage is provided for deployment of dynamic T-gradient monitoring system. For all other instrumentation needs, multi-purpose calibration and instrumentation ports, side flange accommodations made on the DSS and Cryogenic ports will be used. See Section 2 of this document for more details. In the coming months, cryostat penetrations requirements for DP will be worked out in detail. AGAIN, WE CAN PROBABLY REMOVE CRYOGENIC PORTS

• Purity Monitors and dynamic T-gradient monitors will be installed behind the front end-walls. Those systems will cover the

entire height of the cryostat. The horizontal space needed there is less than 0.3x0.3 m2. Static T-gradient monitors will be installed behind the APAs, but the space needed is quite modest: 0.4x0.05 m2

• CISC will have several systems covering the entire height of the cryostat, as purity monitors and T-gradient monitors (dynamic

and static). Although the proper 3D models and rigidity studies should still be done, most likely intermediate anchoring points will be needed. In the case of static T-gradient monitors, which sit behind the APAs, those intermediate anchoring points must necessarily be welded into the membrane. Loads are expected to be very small since the purpose of those anchoring points is just to keep the system vertical. For dynamic T-gradient monitors and purity monitors the choice of intermediate anchoring points is not that obvious: vertical cryogenic pipes and cable trays in the corners are under consideration. In the case of purity monitors, if they will be located close to the corners (which is the current plan), the cable trays in the corners or the bolts in the corners will be used to support them. TO BE UPDATED. MOST LIKELY NO NEED OF INTERMEDIATE ANCHORING POINT FOR STATIC T-GRADIENT MONITORS. DYNAMIC COULD USE SOMETHING THAT KEEPS THE DISTANCE TO THE FIELD CAGE END-WALLS

• No special requirements on the depth of the ullage and its placement with respect to the detector
• No special requirements on the stability of the liquid surface

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Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

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TPC Dynamic profiler

bottom cup spacer FC end-wall

Anselmo Cervera Villanueva, IFIC (UV-CSIC)—Valencia

Cryogenics systems

• We expect cryogenic system will have its own expert control/monitoring panel.

CISC will indirectly interface with the Cryogenics control system to export data into slow controls process variables for archiving and status displays for the experiment operators, and to provide integrated archiving for sampled data in the archived database.

• Gas analyzers will be used to estimate the gas composition at different places. More detail

needed here or link to a DocDB document

• The main devices used by the detector for liquid level monitoring will be the differential

pressure level meters from the cryogenics system. Thus CISC will interface with Liquid level expert control system to extract important information to be displayed for shifters in the control room. Explain better what those level meters are for and distinguish them from capacitive level meters

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