Proto-DU

NE Single-Phase PD

Design,

Assem

bly and APA Interface

AR

APU

CA

: a new concept

Flavio Cavanna

LBN

C M

tg - CE

RN

June 22-24, 2017

PDs M

ounted in APA Fram

e

2 10 PDs per APA Fram

e PD

active area 2076mm

X 84mm

(each) APA Fram

e area (Outside) 6060m

m X 2300m

m

PD Coverage fraction: ~12.5%

5 modules install

From this side

… And 5 from

the other side

IU design (Radiator) FN

AL design (Dipped)

Modular PD

Concept

•The reference PD design for both ProtoDUNE and the single phase FD call for 10 individual PD m

odules per APA frame,

installed following APA assembly

•M

odule dimensions:

-2127.2m

m long X 107m

m wide X 18 m

m

thick (outside)-

2090.5mm

long X 96.1mm

wide X 14.6mm

thick (Inside APA)

-PD Dim

ensions driven by available installation slot in the APA (108m

m long X

19mm

tall)•

Modules m

asses:-

IU design: 2.18 kg-

FNAL design: 1.72 kg

•M

odular design and post-APA assembly

installation allows for testing of different PD design concepts

•Two principle designs: IU design with radiator plates, FNAL design with TPB-dipped light guide bar

Design Sum

mary

•Current plans call for 2 principle designs to be tested in Proto-DUNE, with a lim

ited number (2) of prom

ising alternate designs (e.g. ARAPUCA):-

Radiator plate (IU) Design consists of 12 TPB-coated plastic radiator plates (to convert the 128nm scintillation light

to blue light) mounted over a secondary light guide (Y-11-like bar, to convert the blue light to green and transport it to

the SiPMs) (29 in ProtoDUNE)

-FNA) design calls for a single TPB-dip-coated wavelength shifter/light guide bar to shift the scintillation light and transport it to the SiPM

s (29 in ProtoDUNE)

-N.B.: The m

odularity of the PD design, as well as the fact that they are installed into the APA frame im

mediately

before the APA is installed into the cryostat at CERN, allows for other proposed designs (such as ARAPUCA)

•M

odules of both designs are supported inside the APA frames in stainless steel rails, and are inserted into the

APA frames after the fram

es are wire-wrapped. Both PD modules fit within the sam

e APA support structure

•Both designs are read out with 12 sensL 60035 C-series SiPM

s. The same readout board is used for both

designs

•SiPM

s are grouped into sets of 3, and signals are carried through shielded twisted pair.-

Cables are custom PTFE-jacketed Cat 6 cables, with 4 twisted pairs per cable (1 cable per PD m

odule)

-Cable connectors are standard RJ-45 Cat-6 connectors

-Two cable segm

ents per readout path:•

Cryogenic (13.5m long depending on the PD position in the APA) from

the SIPM PCB to the cryostat flange

•External cables (~3m

long), from the cryostat flange to the readout electronics (SSPs)

•Identical cable length for all m

odules to minim

ize fabrication and analysis complications

•Custom

readout electronics (SSPs) used to read out SiPM signals are m

ounted on top of the cryostat.

4

Indiana University PD

Design

5

Thermal Com

pliance Spring

6 IU M

aximum

Module D

imensions

9

Readout End D

etail

7

FNA

L Design (D

ipped Bar)

8

FNA

L Maxim

um M

odule Dim

ensions

9

Readout End A

ssembly

10

AR

APU

CA PD

Module C

oncept

11

AR

APU

CA D

etails•

Two of the modules in the final APA fram

e will be ARAPUCA m

odules•

AR

APU

CA m

odules, while very different in concept from

the existing PD

modules, have been designed to fit in the

same slots in the A

PA as “Standard” PDs

•The ARAUPCA will be tested head-to-head against IU-style PDs in TallBo in August

•Production Readiness Review in early Septem

ber•

Fabrication in September-O

ctober•

Ready for shipping with final PD modules in Decem

ber.•

NB: SiPM selection for ARAPUCA still under consideration.

12

SiPM M

ount PCB

(“Hover B

oard”)

13

SMT RJ-45 connector

0.4mm

gap SiPM

/Light Guide

Standoff

Active area Provides ~80% Bar end coverage

12 SiPMs, 0.2m

m separation (2.2m

m at each end)

PD/A

PA Mounting Structure

14

Frame inside length 2096.8m

m

96.83mm

wide

16mm

tall (Inside)

Mounting Fram

e Inside Dim

ensions 98.1m

m w

ide X 16.6mm

tall

Test Installations at CSU, PSL

15

CSU test Installation

PSL test Installation (Full-Size APA)

Installation Tooling

16

Cat 6 C

onnection to SiPM PC

B

17

RJ-45 connector on Cryogenic connector Plugging in

18 PD Cable Strain Relief

Cable Tie 2 places

Shared Cable Tray

19

PD Cables Run U

p Into APA Cable Tray (5 each side)

AR

AP

UC

A a new

(LAr) S

cintillation light detection concept - proposed for D

UN

E FD

original idea: E. S

egreto (Univ. C

ampinas - B

R)

A. M

achado (Univ. Fed. A

BC

- BR

)

current Collaboration:

SiPM PCB

Mount Backplane

Vikuity ReflectorG

-10 Cartucho Frame

G-10 Filter

Holding Fram

e

5/17/201723

Dichroic filter

P-terphenyl on filter side (external) TPB on filter side(internal)

A

6

B

54

D

6

RY170522

54

6X6MM-MPPC

C

32

1

AB

32

c

D

ba

FIR

ST IS

SU

E 初

発行

1

C

51

MA

RK

記号

CO

NTEN

TS

記 事

DA

TE

年月

日

AP

PR

承認

CH

CK

検図

CH

CK

検図

DESN

設計

DR

AW

製図

尺度

UN

IT

PR

OJ

三角

法

単位

SC

ALE

名称

DW

G.N

o

図番

TIT

LE

REV

改訂

Issues experienced with S

ensL SiP

M due to packaging failure (epoxy protective

layer cracking in LAr)

New

design developed in collaboration w/ H

AM

AM

ATSU

- packaging w

ith protective quartz window

(no issues at LAr T, better transparency),

higher break-out V - need (very) m

inor modification of S

SP - B

ias V circuit.

Test ongoing at FNA

L

Results w

ill be first released at TAU

P Conference - A

ug. 17

Presenter | Presentation Title

AR

APU

CA tests at TallB

o: Jan and March 2017

•Thanks to:

•The Ferm

ilab LDRD program.

•Eileen Hahn, Jim

Freeman, Ron Davis, Bill M

iner, Brian Rebel and several others.

5/16/201728

Picture of tallboPicture of arapuca rack