sbs gems for gen-rp · 2018. 10. 30. · gmn / gen-rp preparedness review first uva gem layer (eel...

SBS GEMs For GEn-RP

K. Gnanvo

GMn / GEn-RP Preparedness Review, 10/30/2018

INFN GEM layer

Stack of 3

GEM

mo

du

les (40

×5

0 cm

2)

UVa GEM layer

Stack of 4

GEM

module

s(6

0 ×

50

cm2)

GMn / GEn-RP Preparedness Review

SBS GEM Trackers for Gen-RP Experiment

10/30/2018 2

SBS GEM Trackers in Hadron Arm (2 INFN GEM + 10 UVa GEM layers)

▪ The Charge-Exchange (CE) Polarimeter: (2 INFN GEMs + 6 UVa GEMs)

⇨ 2 INFN GEM layers, common subframe to the central frame

⇨ 2 UVa GEM layers, common subframe to the central frame.

⇨ A Cu analyzer block.

⇨ 4 UVa GEM layers, common subframe to the central frame

▪ The Proton-Recoil (PR) Polarimeter: (4 UVa GEMs)

⇨ 2 Identical arms, 2 UVa GEM layers in each arm

GEMs

Cu AnalyzerCH Analyzer


Status of UVa GEMs for SBS (EEL Clean Room 124)

10/30/2018 3

Trigger counters

First GEM layer with 4 modules

BigBite Rear GEM Tracker

DAQ, HV & LV Rack

Storage shelves with 33 UVa GEM modules

8 out of 10 SBS GEM layers

▪ 37 Modules for 9 SBS GEM layers already in store at JLab (EEL Clean Room 124)

▪ Additional 7 modules (+ spares) for 2 remaining layers to be shipped to JLab in the coming weeks (~November 2018)

▪ 2 INFN SBS GEM layers to be assembled / tested in Testlab CL after 4 INFN BB GEMs installed in BB in TED (Summer 2019 )


First UVa GEM Layer (EEL Clean Room 124)

10/30/2018 4

DAQ, HV & LV RackClose view on the HDMI cable trails

▪ Complete assembly of the first layer

⇨ Full cabling of the HDMIs, (digital and analog MPDs, and LV)

⇨ HV cables and N2 Gas flowing through the chambers

⇨ Preliminary HV test done last week

⇨ First cosmic test run on the assembly table

⇨ start this week

▪ To do:

⇨ Complete the on-table cosmic test run in a month

⇨ Dec. 2018: Move this first layer in the cosmic stand

⇨ People: K. Gnanvo, S. Jian, T. Cao

▪ Design of the cosmic test stand for 6 layers is completed

⇨ Main Cosmic stand: Commissioning of up to 6 UVa GEM layers

⇨ Lightweight on-wheel installation frame: To move single layer into the main frame

⇨ Design is completed and had been approved by JLab structural engineer (Whit Seay)

⇨ Unistrut beam to optimize cost / simplicity / robustness of the structure


UVa GEMs Cosmic Stand Setup (EEL Clean Room 124)

10/30/2018 5

DAQ, HV & LV Rack

Cosmic Stand with GEM layers

Lightweight Frame

▪ To Do list:

⇨ Nov. 2018 –Dec. 2018: Procurement of the parts and assembly of the frames

⇨ Dec. 2018: Move first UVa GEM layer on the cosmic stand and Start cosmic data

⇨ People: K. Gnanvo, S. Jian, T. Cao


SBS GEMs Support Frames

10/30/2018 6

▪ Design nearly completed, to be finalized in Dec 2018

(J. Annand & D. Hamilton)

▪ Design & Construction under JLab engineering group

(Robin Wines’s talk)

▪ Tentative timeline for the GEM layers integration (see

next slides)


SBS GEMs Gas System

10/30/2018 7

Premixed Ar/CO2: 70/30

▪ Estimated flow rate: (4 to 8) L / h / module ⇨ 200 l to 400 l /hour More details from

Jack’s talk


SBS GEM Readout Electronics

10/30/2018 8

• 128 analog ch / APV25 ASIC

• 3.4 ms trigger latency (analog pipeline)

• Capable of sampling signal at 40 MHz

• Multiplexed analog output (100 kHz readout rate)

MPD(INFN)

Channels APV25 MPDs

UVa GEMs 113000 880 70

INFN GEMs 14000 108 8

MPD Main Block

Arriga GX FPGA128 MB DDR2-RAMFirmware V4.0 (74% resources):

# FIR Filter (16 param)# Zero Suppression# Common mode and pedestal subtraction# Remote config, # ≈2 ns trigger time resolution

MPD-SSP Interface

SSP-Protocol

Aurora Protocol

MPD-VME Interface

VME-Protocols

2eSST

2eVME

VME32 …

VXS

OpticalFiber

SSP

VME Master(Intel SBC)

VME (64x)

Currently running cosmic test/ JLab (VME mode)

SSP mode in Rear GEM cosmic test


SBS/BigBite Electronics setup

10/30/2018 9

SBS GEMs Electronic Hut


SBS GEM Electronics - components

10/30/2018 10

Item Status

996 FE boards (880 for UVa GEMs, 108 for INFN GEMs) 124xBCKs, PPIn hand: UVa (10 UVa GEM layers) – INFN (all 2 INFN GEM layers) MK committed to provide for the 11th UVa Layer (100 APVs, need 88)

78 MPDs (70 for Uva GEMs & 8 for INFN GEMs)In hand: UVa (10 UVa GEM layers) – INFN (all 2 INFN GEM layers) MK committed to provide for the 11th UVa Layer (10 MPDs, need 7)

4 SSP modules (together with BB GEM readout)3 in hand: 2 with UVa, 1 with Paolo (Italy) 1 more to be identified / borrowed (Alex)

TI – Trigger supervisor Currently used in cosmic

Master VME (for SSP and TI) To be identified

Trigger / clock fan-out (78 channels)JLab custom boards (under production) - Enough for 2 x 128 channels (clock/trigger)

4 VME64x / VXS (for SSP, TI …) (together with BB GEM readout) To be identified: 3 in hand (check availablility of the 4th with Alex)

4 VME crate (no master) for MPDs Simple VME crates (check availablility with Alex)

1 VME minicrate for slow control + Master To be identified / procured / shared

320 HDMI cable (+ spares) : 160 shorts (3m) + 160 long (10m) To be procured

78 Optical fiber MPD – SSP connection To be procured

78 (+ 1) NIM cables trigger distribution To be identified / procured (1 from SBS GEM hut to electronic hut)

78 NIM cables (10 cm) for clock distribution To be identified

46 x HV cables (15 m?, 55 m? ... ) To be identified

6 x LV cables pairs (15 m?) To be identified / procured

HV power supplies for 46 channels (40 UVa GEMs + 6 INFN GEMs)In hand: 1 Wiener crate & 6 HV modules (8 ch. each) => 42 channelsTo be procured: 1 spare crate + at least one more HV module

LV power supplies (2xTTI-Eth., UVa system) Currently used in cosmic (+spare)

SBS GEMs Electronic Hut JLab Engineering - Spring 2019 (R. Wines & D. Hamilton’s talk)

GMn / GEn-RP Preparedness Review10/30/2018 11

Pre-Experiment Installation and Commissioning

Plans & Milestones

Goals:

⇨ Assembly and commissioning 11 GEM layers in the EEL Clean Room for Gen-RP Trackers

▪ Evaluate the assembled GEM layers for noise levels, efficiency and resolution using cosmic.

⇨ Commissioning of hardware level background suppression algorithms

▪ Test MPD readout in SSP mode with the zero suppression on a large scale

⇨ Develop and test diagnostic scripts to be used in GEM tracker commissioning.

Milestones:

⇨ 11/2018: Complete the assembly and testing of the first large area GEM layer (LT1).

⇨ 12/2018: Complete the implementation of hardware background suppression. Demonstrate the proper working at high

rate trigger and background conditions using x-ray data @ UVa then implemented on large scale on the Cosmic stand

⇨ 12/2018 - 12/2019: Assembly and testing of 11 Uva GEM layers. It is expected that after the first layer, each subsequent

layer will take approximately 1 month. Testing of the layers with cosmic will be carried out simultaneously.

⇨ We have a SBS-GMn-GEMs weekly meeting every Tuesday Morning @ 9:00 am with the wiki page below

⇨ https://hallaweb.jlab.org/wiki/index.php/GMn_GEM_Commissioning_Meeting

https://hallaweb.jlab.org/wiki/index.php/GMn_GEM_Commissioning_Meeting


Tentative Timeline for SBS GEMs commissioning / Installation

10/30/2018 12

UVa Crew:• NL: Nilanga Liyanage• KG: Kondo Gnanvo• SJ: Siyu Jian • Uva Grad. Stud. (summer 2019)HU crew• MK: Michael Kohl• TC: Tongtong CAO• HU Summer Student (2019)


Just stole this from Evaristo’s talk


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sbs gems for gen-rp · 2018. 10. 30. · gmn / gen-rp preparedness review first uva gem layer (eel...

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